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Matching Students with Tutors

We travel to these locations

Epping Castle Hill Carlingford Eastwood Cherrybrook Winston Hills The Ponds Dural Kellyville

One to one tuition in the comfort and convenience of students home at $ 60 / hour.

During first lesson I ask questions and assess quality of answers and time taken to answer questions.

Show how to correctly answer questions from high school teacher or other sources eg textbooks.

Explain fundamental concepts in detail and using examples show how fundamental concepts are used to answer specific questions from school or tuition.Emphasise the importance of showing all steps legibly and in logical clear order.

Set homework based only on topics and examples discussed during tuition

Find out date of next exam and topics and prepare appropriately by focusing tuition on future examinable topics as outlined in exam notification sheet.

Working with children check approval from NSW government.

Hi

One to one tuition is conveniently held at students own home at a mutually agreed time and day (weekends and weekdays are available)so parents avoid spending the time and hassle of driving and delivering student to and from tuition held at coaching centre...often after hard day at work.

For year 7 - 12 students fee based on $60/ hour at students home or public library

The first lesson only is discounted to half the above rates....($30/hour ) ..but this is only if you mention this

this site.

Advance payments not required.

No contracts to sign and therefore parents not locked into paying for unsatisfactory tuition for months in advance

Students should prepare a list of questions and concepts causing difficulty to be discussed during

tuition...this will enable me to determine the students academic level and plan an appropriate program of learning.

Tuition is more effective in terms of learning and obtaining maximium improvement at minimum cost if done on a one to one basis rather then tutoring several students of differing abilities and different ages and school years at same time in a group.Student does not have to wait for question to be answered.

One and half hours tuition for a group of three students at a time implies that each student receives approximately 30 minutes of one to one tuition .This is in general insufficient to cover background and understand the scope and depth of various topics.My group size consists of one student only...this has obvious advantages.

My tuition is personal as possible as there is only one person in the group and the style of tuition is tailored to suit the learning style of the student ,to explain how to obtain correct answer to school and exam problems and other relevent questions.

As there are no other students present , the student need not feel embarassed asking questions. By the way if a students asks many questions there is no increase in fees...if a students asks very few questions there is no decrease in fees. Students often feel inhibited and embarassed about asking question....in my view the only bad question is the

one which is not asked.

My emphasis is to explain the fundamental concepts in mathematics and physics in simple terms and ideas and whenever reasonably possible use existing fundamental laws to deduce more laws equations and rules.When students understand they begin to learn and enjoy the subject. It is difficult if not impossible to enjoy a subject which is only partially understood.It is more interesting and challenging to derive an equation rather then receive it without background explanation and derivations.

I have also prepared some Mathematics / Physics experiments and there is excellent agreement between measured and predicted value.

Experiments in Mathematics help students bridge the gap between theory and practise and better able to understand the more abstract theories eg Simpsons rule...integration and Simpsons and Trapezoidal rule to find area...Newtons law of cooling...maximum and minimum turning points.

For physics the following experiments are available:

potential and kinetic energy...parabolic motion...period of normal pendulum and conical pendulum.measurement of earths gravity...conservation of momentum for elastic and inelastic experiments

. ..Galileos experiment. etc..how to calculate

radius and mass of earth using three simple measurements and Newtons Law of Universal Gravitation, Lenzs Law . A good quality accurate experiment is a very effective learning tool and a means to better understand fundamental concepts.

Please note that Year 11 students will follow the new revised Physics syllabus starting this year (2018)

which is far more difficult and of higher standard then the previous syllabus. It is far more appropriate in terms of scope depth and choice of subject matter.for students wishing to study Engineering/ Science at University. .

Homework is given at the end of each tuition session and is based on what has been taught in tuition and at school.

All steps needed to find solution should be written legibly in clear logical order.

Students should study written examples and explanations given in tuition before attempting homework which should be attempted as soon as possible after tuiition This should preferably be completed no later then 4 days after tuition ( while concepts taught in tuition are still fresh in the mind of student)

Students should not spend too much time correcting a solution if the answer is wrong as this can be frustrating and demoralizing The attempted incorrect solution should not be rubbed out.. It is better to let me find the source of error which in many cases is a very simple mistake.

All homework should be written into an A4 sized notebooks . These must be kept as a record of topics covered and the

scope and depth of coverage.A summary book will be developed by the student which will incude formulas examples and an index of topics.

A seprate smaller note book containing index and summary of topics as written by student immeditely after successfully answering homework questions.These contain formula and examples and a list of common mistakes to avoid.It also contains a section of common mistakes to be avoided.

My experience is based on 20 years tuition in following subjects:

Mathematics Years 7-10 all levels

Mathematics

2U General Advanced Years 11-12

2U Advanced Years 11-12

Mathematics ( Ext 1 and Ext 2 ) Years 11-12

Engineering Studies Years 11-12

Physics 2 U Years 11-12

International Baccalaureate Years 11-12 Mathematics (All levels)

International Baccalaureate Years 11- 12 Physics

Gamsat Physics

UMAT Physics

Ten years teaching High School Mathematics (all levels)

Science Years 7-10

Physics (years 11-12) in High School.

Marking of HSC Physics examinations.

_____________________________________________

22/9/17

The following questions are both unusual

and more difficult then those found in a

normal textbook.

1) How to find the value of e from first principles

Must first understand the concept of e

given that f(x)= B ( power x)

Does there exist a value of B such that

df/dx = B (power x)

(Unchanged by differentiation) and if so find its value

Using the fundamental definition of differentiation

(f(x+h) - f(x))/h= ( B (power (x+h)) - B (power x))/h

B (power x)= B(power x)(B (power h) -1)/h

1 =( B(power h ) -1) / h

Rearranging

h + 1 = B (power h)

Log (h+1) = h Log B (must use base 10 ..why)

B = 10 power(Log(h+1)/h )

Let h equal a very small number eg 0.000001

B = 10 (power( (Log 1.000001)/0.000001)

B = 10 power 0.4329

B= 2.718 (approximately value of e)

I would appreciate any feedback on this derivation...whether you agree or disagree

2) prove that there is only one value of e ( using calculus)

3) given length of each side of a scalene triangle find its area

( without using Herrons formula or trigonometry)

4) Generate Pythagorean triads

These are whole numbers a,b, c such that

axa +bxb= cxc

Eg

5×5 + 12×12 = 13× 13

5) prove that

a (to the power of zero) equals 1

You may use the rule

a (power m) x a(power n) = a(power m+ n)

6) a rectangular prism has 3 faces of area 7 , 8 and 9 square metres

What is its volume and length of each side

What is the length of each diagnol for each

face of the prism

7) a star has a radius of 42673 4896875 metre

If its radius increases by 3.5metre what is its change

in circmference and surface area.

8) how to balance complex chemical equations using simple algebra ( no guesswork)

How could you show that a given chemical

equation cannot be balanced.

Hi

9) show that a (to the power of zero) = 1

10) at the end of 6 months the price of a house

Increases by 10%

In another 6 months the price decreases by 10%

How much has the price increased over one year?

11) using a pencil,compass, straight edge only show how to divide a straight line

into any numer of equal lengths ..eg 3 ,5,6 , 11 equal lengths

12) using a compass ,straight edge , pencil only show how to construct angles of

60, 45, 90, 30, 15,75 ,150, degrees

13) using a compass ruler pencil construct an exact length of ( square root of 34 ) cm

14)using a compass ,ruler ,sharp pencil construct an area

of ( square root of 35) square centimetres.

15) given a rectangle sand compass pencil straight edge only show how to divide it into 7 smaller equal area rectangles

16) given a triangle ABC ,compass ,sharp pencil, straight edge show how to divide any triangle ABC into

a triangle having

One fifth of area of ABC

One eleventh area of ABC

17) develop the formula for the area of the trapezium given that the lengths of the parallel sides are a and b

and h is the perpendicular distance between the parallel sides.

18) show that the sum of the two lengths of any triangle is larger then third side

19) consider a triangle

AB= 4m-10

BC=8m-20

AC=10m-25

Find the value of

(sinA) ÷ ( sinB)

Find value of all internal angles

20) Assuming the sum of positive numbers is positive

and the product of positive numbers is positive

prove that

a) the product of a positive and negative number is

negative

b) the product of two negative numbers is positive

21) Without using calculator find which is larger

( square root of 7) + (square root of 5)

or

(Square root of 2) + ( square root of 10)

22) a triangle has side lengths

m×m + 1

m×m +7

3m + 1

Find the minimum value of m and minimum

area of triangle.

23) The Chefs Problem

Recipe is as follows

( Do not actually use this recipe...the result will

almost certainly be an inedible disaster)

43 grams sugar

53 grams oil

51 grams flour

32 grams eggs

36 grams water

Find the following

a) mass of sugar to to total mass of ingredients

b) mass of water to total mass of ingredients

In response to customer demand the chef decreases the total mass of this " cullinary masterpiece"

by reducing the mass of each ingredient by 20 grams

Find the answer to (a) and (b)

c) What do you notice?

d) Why?

Increase the mass of each ingredient by the same amount.

Answer (a) (b) (c) (d)

Drecrease the amount of each ingredient by the same amount...but there must always be 5 ingredients.

Answer (a) (b) (c) (d)

Multiply or divide each ingredient by the same

positive integer or mixed numeral.

Answer (a) (b) (c) (d)

23) Factorise

4 x(a to power 4)+ 81×(c to power 4)

24) consider a straight line AB of length m

Using compass, straight edge , sharp pencil

show how to locate a point C on AB such that

(AB) ÷ (AC) = any mixed numeral ...eg (2 + 1÷ 3)

25) consider the integers 1, 2, 3....100

What is the sum of the even numbers minus the

sum of the odd numbers?

26) the chocolate problem

Conider a rectangular box containing one layer of circular discs of chocolate of identical diameter and

thickness.The diameter does not necessarily equal to the thickness.Thickness of each disc is constant

irrespective of diameter.

The discs touch each other or the sides of the box.

The discs are packed so that they connot move with respect to each other or sides of box.

Which contains more chocolate

a box containing a large number of small diameter discs

Or

a box containing a small number of large diameter discs

Or

neither...

Is there a maximum amount of chocolate ?

Give reasons for your answer.

27) which is larger

99 to power 84

84 to power 99

Do not use logs or calculator

Give reasons

28)

Consider a triangle whose sides are of length

4c + 5

9

c×c

What are the allowable values of c

29) consider a mass m rotating at radius r about

a mass M

a) what is the speed of m relative to M

b) what is the speed of M relative to m

c) according to a clock on m the time taken to

boil an egg is t minutes

What is the time taken for this event as measured

by a clock on M ?

d) according to a clock on M the time taken to

eat an egg on M is j minutes

According to a clock on m what is time taken to eat

this egg?

If the true shape of m and M is spherical what is the shape of M as seen by an observer on m?

30) explain the following dillema

Cathode rays are beams of electrons

Cathode rays are blue red green etc in colour

Therefore electrons are blue red green etc in colour

Do cathode rays travell only in straight lines?

Under what conditions can they travel in curved lines?

Give reasons for your answers.

Why does it appear that light in a cathode ray tube is deflected by an electric / magnetic field?

What is happening?

Why does it appear that light causes a paddle wheel inside a cathode ray to rotate?

If a cathode ray has absolutely no gas presemt

and a high voltage is applied what would you expect

to see?Why?

What is the definition and characteristics of cathode rays?

If a high voltage difference is applied to a gas why does ionisation of gas occur.?Why is emr emitted.

If a high voltage is applied across a gas in a cathode

ray tube and visible light is not observed what conclusions can be drawn?

31) Prove that in general that it is incorrect to say

Square root of ( a xa - bxb) = a - b

Square root of ( axa + bxb) = a+b

Under what conditions are above statement true?

32) Prove that Lenzs law must be true by considering a frictionless horizontal surface,permanent magnet, light globe,a metal coil fixed in place but joined at both ends allowing current to flow..

33) Consider two different investments A and B

In A the principle is invested on the 1/2/18... the interest rate is 5% pa compounded annually.

In B the principle is invested on the same day 1/2/18...the interest rate is 10% pa compounded annually.

The Principle in A Is 3 times the principle in B.

a) A fter how many years is the worth of each investment the same in value?

b) After how many years is the interest earned on each investment the same value?

34)consider thefollowing

7 ÷ (2× square root of 5 - 4×square root of 3 + 3 × square root of 6)

Rationalise the denominator.

Check your answer using calculator.

35) is it possible to construct a circle through all

vertices of

a) any triangle

b) any quadrilateral

Give reasons

35) consider two hemispheres of different diameters

The sum of the diameters is square root of 17

The difference in diameters is square root of 11

Find exact difference of surface area of each hemisphere in terms of pi

36) consider a rectangle ABCD...the length of sides is a and b

the length of each side is increased by one metre to form rectangle EFGH.

Find the differerence in perimeter and area of the rectangles

37) consider two straight lines AB and DE intersecting

at point C.

What is the ratio of areas of triangles and ratio of perimeters of triangles

ACD and ECB

ACE and ECB

in terms of AC , CD , EC ,CB

where

AC = f CD= e CB=g CE= h

and angle DCA = y

38)The barrel of a gun is horizontally aligned and points directly at an apple which is m metres away ( in horizontal direction). At the instant the bullet is fired the apple falls downward from the tree.

Under what circumstances will bullet hit the apple? Hint: draw diagram.

39)Sketch the following ( do not use calculus)...

do not find co ords of local minima and

local maxima.Show the z interceps.

y =( ( z-2) to power 3 ) x ((z + 3) to power 2)

The vertical axis is y

How many local minimums are there.

How many local maximums are there.

40) Consider

Y =( (W - 3) to power 2) × (( 2W + 5) to power 6) + 5

Sketch

What is domain and range

41) what is the domain of

y = 3 ÷ ( ln ( w x w - 5w + 6))

Y =( ( 2f + 3) ( 2f + 3) (3f - 5) (f + 6) (f + 6)(f+ 6) (f + 6)) to power 0.5

42) consider the following...

(11×11) - (13 × 13) + (15 × 15) - ( 17 × 17)...((97×97) -(99 × 99))

Isi an AP or GP or neither?

Find its value by developing an appropriate formula.

43) develop a formula for finding the value of

20 x 20 + 21 x 21 +22× 22.......90× 90

44) Given that m and n are both rational and greater then zero find values for m and n such that

a) both m and n are integers

b) both m and n are mixed numerals

for the equation below

m × m - n× n = 27

45) consider two cars separated by a straight line

distance of 75000m and both are initially stationery.

Car A has an initial speed

20 m/ sec and acceleration of 3m/ sec/sec

and travells to the right

Car B has an initial speed

25 m/sec and acceleration of 4 m/sec/sec

and travells to the left.

Both cars start journey at same time toward each other.

When and where do the cars meet?

If Car A has a constant speed of 18 m/sec to the right and

car B has a constant speed of 14 m/ sec the left when and where do they meet?

46) consider a sector having a uniform thickness

and an angle at centre between zero and 180 degrees.

The area of the sector is ( 32 pi) ÷3

The total area of the two rectangular sides is 32

The area of the curved surface is ( 16 pi) ÷ 3

Find the volume of the sector WITHOUT finding the

values of angle at cenre.radius,thickness of sector.

47) Consider a rectangular prism .The side lengths

consist of 3 consecutive positive integers.

If one metre is added to each side length

its volume increases by 2 cubic metres.

Find the original dimensions of the rectangular prism.

48) consider a circular cylinder of height h and thickness 1.0 m.

The base of the cylinder is annulus.

What is difference between the outside curved

surface area and the inside curved surface area

Do not consider the area of the two annuli.

49) Using the product rule for differentiation derive the quotient rule for differentiation.

50) Given that y = sin m and dy/dm = cos m find the first derivative of cosm and tan m.

51) what are the characteristics of a black body.

Is it necessarily black? Give reasons

52) Consider the equation

(Square root of g) (1 + 3(square root of f))

equals

-f - (6÷(square root of g))

Find g in terms of f

Find f in terms of g

53) Given that n is greater then or equal to 3

show by induction that

29 to the power (n×n -3n + 2) - 1 is divisible by 14

54) a)Using induction show that for all integers n

greater then or equal to 7 that

(2 n -5) (2n-4) (2n -3) is divisible by 6

b) Find an alternative way to prove( a )

55) Group A has an average of 9

Group B has an average of 11 and 2 more

members then Group A

When Group A and Group B are combined

the average is 121/ 6

How many members are in each Group?

56) consider a mass m attatched to end of taut

string radius r and rotating at a tangential

speed of v m/ sec.

Ignore gravitational field.

Given that the initial vertical and horizontal

displacement are respecively

r sin u and r cos u

where u is initial angle in radians

show using calculus that

centripetal acceleration = (v x v) ÷ r

and this acceleration points toward

the circle centre.

57) consider a triangle whose perimeter is 18 cm

Its side lengths are 2w-7....w+2 ..w +3

Consider another triangle whose perimeter is 36 cm

its side lengths are 2y- 10...y+6 ....3y - 8

Are the triangles similar....Give reasons

Find the lengths of all sides of both triangles.

Find area of each triangle.

58)Triangle A has side lengths

3w-2 and 14-2w and 14 -w

Triangle B has side lengths

2y - 7 and y - 1 and 3y - 9

Perimeter of A is twice that of B

Find side lengths of B...find area of triangle B

What are maximum and minimum

side lengths of A

What are maximum and minimum areas of triangle A?

59) Given that the area of a rectangle is LB prove

that area of a triangle is 0.5 LB where B is base

length and L is perpendicular height of triangle.

60) Consider equations

2a - 3b + 5c = 6

4a +b - 2c = 7

Find value of

-7b + 12c

14a - c

Find value of

3 to the power ( 24a - b)

61) The original volume and suface area of a cone

is V and S

If its radius is halved and its height is tripled what

is its new volume and surface area.

If the radius is doubled and the height is halved

what is new volume and surface area?

62) An equilateral triangle has sides of length w.

It contains three identical discs of radius r. Ech disc

touches each of the other discs and the sides of the triangle. The discs cannot move with respect to the friangle or the other discs.

What is the equation of r in terms of w.

What is area outside the discs but inside the

equilateral triangle? What is its perimeter?

63) If 1019 is multiplied 981 what are last 4 digits?

64) Consider coins of following denominations

5 cent 10 cent 20 cent 50 cent

In how many different ways is it possible to have a total of 155 cents?

65)

Given that y! equals an integer whose last 4 digits are all zero what is minimum value of y?

Note that y! means y factorial

5! = 5 x 4 x 3 x 2 x 1

66) Consider two isoceles triangles

Triangle A has lengths c,c and d

Triangle B has lengths e,e and f

Assume that c,d , e , f are all different positive

values.

Can the triangles A and B have same area and if

so under what conditions?

67)

Two apples , three bannanas and four mandarins

have a total cost of 570 cents

Five apples , two bannanas and six mandarins have a total cost of 795 cents.

Find total cost of 11 apples and 10 mandarins.

68) The sum of lengths of three sides of a rectangle is 65 cm.

The sum of lengths of all four sides is 90 cm.

What are the dimensions of the rectangle?

69) Consider a trapezium whose area is 8 square cm

It is modified so that one of the parallel sides is increased by 3 cm and the other parallel

side is decreased by 3 cm. The perpendicular distance between the parallel sides is doubled.

What is the area of the modified trapezium?

70) Given the index rule

(a to the power m) x (a to the power n)

equals

(a to the power (m+ n))

show that a to power zero equal 1

71) consider a triangle whose lengths are

3m - 2

2m+ 8

8m - 11

The sum of a pair of different lengths is 42.

All side lengths are integrals.

Find the dimensions of the triangle and find its

area.

72) Given that

(a + b) × ( a + b) = axa + 2×a×b + b× b

Find expansion of

(a-b) (a-b)

73) Consider a cylinder.

After it is filled with water the total mass is 820 grammes.

When it is 2/7 full of water the total mass is 490 grammes.

What is mass of empty cylinder?

74) consider an analogue clock.

What is the angle between the minute and

hour hand at 4.38 pm?

At what times will the angle between hour and

minute hand be 65 degrees

For the next two occasions only at what time

will the hour and minute hand be in alignment?

75) consider the analogue clock in (74)

If it loses 6 minutes per day what is the true

time when it displays 5.00 pm?

76) Consider three sets of traffic lights A , B and C all

in a straight line.

Traffic light A shows green for 50 seconds and not green for 100 seconds.

Traffic light B shows green for 75 seconds and not green for 225 seconds.

Traffic light C shows green for 25 seconds and not green for 125 seconds.

At t = 0 seconds all three sets of traffic lights have tuned green.

What is the next time taken for all three sets of lights to turn green simultaneously?

If the straight line distance between TL A and TL C is 1350 metres

what is the minimum speed if car driver needed to

pass through all 3 sets of lights showing green without stopping given that

the car driver leaves TL A at t = 0.

and

the velocity of car driver is constant and the reaction time of the driver is zero.

77) The product of five consecutive numbers when divided by the middle number equals 17920.

Find the value of these number

What is the sum of these five numbers in terms

of the middle number?

78) The diagnol length of a square is 8 cm

What is the area and perimeter of the square?

79) Consider a square of diagnol length w.

a) If the diagnol length is tripled by what factor

is the new area and perimeter increased?

b) if the diagnol length is halved by what factor

is the new area and perimeter decreased

80) Consider two straight parallel lines

y = mx + b

y = ex + d

Find the perpendicular distance between them

81) consider a circle of radius 4 whose centre is at

the origin.

The straight line

y = 2x + 3 intersect circle at A and B

y = - 0.5x - 1 intersect the circle at D and E

Find the co ordinates of A ,B,D and E

Show that the perpendicular bisectors of AB

and DE intersect ao circle centre.

82) The straight line y= mx + b intersects the circle whose radius is r and whose centre is (0,0) at A and B.

Find the equation of the perpendicular bisector of AB and show it passes through (0,0)

Show that the perpendicular bisector of any two chords on same circle must pass through circle centre

83) a) Find the prime factors of 9331

b) If m is a positive integer solve the following equation using results of (a) and without guess work

m^5 + m^ 4 + m^3 + m^2 + m + 1 = 9331

where

m^a means m to power of a

84) show that

a) if number is divisible by 3

the sum of its digits is divisible by 3

b) if a number is divisible by 9 the sum of

its digits is divisible by 9

c) if a number is divisible by 4 its last

two digits digits are divisible by 4

d) if a number is divisible by 8 its last two digits

are divisible by 8

e) if a number is divisible by 24 then the

sum of its digits is divisible by 3 and the last

two digits are divisible by 8

85) Find the value of

5 - 7 + 9 - 11 + 13 -15 ......89 - 91

Using two different methods

86) given that a^n means a to the power n

Develop a formula to evaluate

5^2 - 7^2 + 9^2 - 11^2 ...89^2 - 91^2

87) Solve

m^2 = 4 - mn

n^2 = 5 - mn

88) Five persons A B C D E have a total sum of money equal to $130

A and B have a sum of $50

C and D have a sum of $35

E and A have a sum of $69

How much money does B have?

89) Given that m and n are prime numbers

solve 5m + 9n = 712

90) Factorise 91

Given that and b are positive integers solve

a^ 3 + b^3 = 91

without guesswork.

91) A 2.0 kg mass is acted upon by the following

external forces

11 N east 35 north

15 N east

16 N east 60 south

10 N south

24 N west 65 south

3 N west

8N west 40 north

18N north

Find vector sum of forces in east west direction

by using resolution

Find vector sum of forces in north south direction

by using resolution

Using above answers find net force and acceleration

Using graphical means solve above

92) In a bag there are 4 green balls. The remainder are either yellow or red.

The probability of taking out two green balls without

replacement is 2/7.

Find original number of balls in bag.

What is the probability of taking out (without replacing)

a) three green balls

b) three red balls

c) three yellow balls

93) in a GP the sum of the first three terms is 9

The sum of next three terms is 72

Find the vaue of first term , the common ratio

and the sum of 12th 13th and 14th term.

94 ) if the common ratio in a GP lies between -1 and 1

then the GP has a sum to infinity.

What does this mean?

How should the statement be worded.

95) The product of four prime numbers is 149071

Without using algebra find the numbers.

96) The product of a prime number and15 and added to the product of a different prime number and 8...the total sum is 134

Find value of each prime number.

97) Car A and car B leave point C at the same time

and travell along same road in same direction.

Car A has a speed of 70 kph and car B has a speed

of 60 kph.

At what time and distance will car A overtake

car B?

At what time will car A be 5 km in front of car B.

What is the total distance travelled by each car

in this time?

98) Find the average of a and b if

31-4a= 4b + 18

Find the value of

a^2 + 2ab + b^2

99) The four edges of a square are licated on a circle

of radius r.

If the difference between the area of square and

area of circle is 8 square cm find the radius of

circle and length of side of square.

100) using induction show that

-1 + 2 (power 2n) is divisible by 3

for all positive integers n

Is there a faster way to prove above without using

induction?

101) consider two trains travelling in opposite direction

Train A ( of length 2.2 km) leaves station C at 9.00 am travelling east at a

constant speed of 65 kph.

Train B ( of length 1.8 km) leaves station D at 9.00 am travelling west at a

constant speed of 80 kph

Station C and D are separated by a a straight line distance of 450 km.

a) when is the front of train A in same position

as front of train B

b) when is front of train A in same position

as rear of train B

c) when is rear of train A in same position as

front of train B

d) when is rear of train A in same position as rear

of train

e) for what time period is any part of train A next

to any part of train B

102) Consider a car travelling at night.

If the reaction time of driver to apply brakes

is 0.7 sec and the deceleration of the car is

0.8 m per scond squared .

The headlight beam can only see 80 m into

the distance.

What is maximum allowable speed of car in order to

avoid crashing into unexpected obstacle on rhe road?

What are the implications for the setting of safe

speed limits for cars?

103)

Cosider a train 1.5 km long travelling at 70 kph.

For how long will any part of the train be in a tunnel

of length 2.0 km?

104) The hypotenuse of a right angled triangle

is of length

(2ab) to power 0.5

The other side lengths are a and b

What are the lengths of and b

How many solutions exist ?

105) consider an analogue clock.

How many times ( during a period of 8 hours )

commencing at 3.0 pm) do the hour and second hand

coincide?

106) consider the sequence

3,4,7, -2 ,-5,-8, 3,4,7, -2,-5,-8....

Find the sum of the first

a) 98 terms

b) 99 terms

c) 100 terms

107) What is the last digit of

( 32 to power 53) plus ( 8 to power 51) ?

108) Consider the following

4132431442 × 10,000,000,002 = y

What is the sum of the digits for y?

109) The pages of a book are numbered from 1 to 40

a) what is the sum of these numbers

b) what is the sum of the digits of all of these pages.

110) An apple, bannana and pear cost 150 cents.

A bannana pear and lemon costs 170 cents.

A lemon and apple costs 90 cents.

What is the total cost of

a) 3 lemons 3apples 3pears 3 bananas

b) 5 apples,2 bananas, 2 pears and 5 lemons

111) Without using calculator find which is larger

( 5 to the power 0.5 ) + (7 to the power 0.5)

OR

( 6 to the power 0.5) - (3 to the power 0.5 )

112) A rectangle has a diagnol of length 17 and

and area of 120.

The dimension of the rectangle are a and b

Without solving for a and b find the value of the

following

a ( power 2) + b (power 2)

ab

a (power 6) - b (power 6)

113) consider the first n consecutive multiples of 12

eg 12 24 36 ........12n

Find the average of these n multiples in terms of n

114) Consider a triangle ABC of area 43.65

square cm.

CE/CB= 1/2 AD/AB = 5/11 CF/CA =4/13

Points D , E , F lie on AB , BC and CB respectively.

Draw diagram showing above information.

Without finding numerical value of any angles or

lengths find

Areas of triangles ADF , DBE ,CEF, FDE

Area of quadrilateral FDBC

115)

Given that

4(y-2) to power 3 - 5(y-2) to power 2 - 6(y-2) + 8

= a ( y to power 3) + b (y to power 2 ) + cy +d

find value of a , b , c and d

without expanding .without using simultaneous

equations.

116) Consider the following five scores

17 15 20 16 J

The mean mode and median are equal to each

other.

Find the value of J

117) A circle of radius r has a chord AB of

length c.

The point C is on the circle and is opposite AB.

The angle ACB is eqal to m

In terms of a and r find the value of

sin m and cos m

119) Without using simultaneous equations or expanding (1)equating coefficients solve for a b c d

(4m -1)^ 3 + ( 3m -2)^2 +2m -5

= a(m^3 ) + b(m^2 ) + cm + d .....(1)

Note : a(m^b) means a ×[ ( m) to power b]

120) consider a staircase.

Jack climbs 2/5 of the total number of stairs.

He then pauses for a short break and than

climbs 1/7 of the remainder and then climbs

2/3 of the the remaining number if stairs.

What is minimum number of stairs in staircase?

121) The average mark of 25 students in an English class is 64%.

The average mark of 18 students in a different

English class is 70%.

What is the average mark of all students?

122) Given that

a/b = c/ d = 2/ 3

Find the value of

(2a + 9c)/ (3b + 5d)

( a - 6c) / ( 4b - 9d)

(a + mc) / ( b- md)

123) The cost of a single blue ,green ,red pencil

are 45 cents , 74 cents and 63 cents respectively

At least one pencil of different colour was purchased.

A $10 note was used to pay and change of

$2.20 was given.

What was the number of each different coloured pencil sold?

124) The product of 19008 and 8036 is divided by the

sum of 940 and 1060.

Without using calculator find the remainder.

125) The pages of a book are numbered consecutively

from 1 to 119

What is the probability that the sum of the digits

a page number is

a) 8

b)12

126) The cost of 3 pizzas is shared equally between a group of friends.

If each friend pays $7 the change will be $8.

If each friend pays $4.50 there will be $12 too little.

What is the cost of each pizza?

How many friend in the group?

127) in a group of 42 students

23 play cricket

15 play football

8 do not play cricket or football

Draw the Venn diagram.

How many students play

a) only cricket

b) only football

c) cricket and football

128) Consider the sequence

1 1 2 3 5 8 13 21 34 55

After the second term each term of the sequence

is equal to the sum of the two previous terms.

What is the value of the the 15 th term and 20th term?

129) Develop the formula for finding

1 + 4 + 9 + 16 + 25 +....n^2

130) consider the series

1× 2 2× 3 3×4 4×5 5×6 ....

= 2 6 12 20 30.....

What is the value of

a) 30 th term

b) n' th term

c) the sum of first 30 terms

Hint : use results of (129)

d) the sum of the first n terms

131) A circle of radius 5 units has centre at ( 1,3)

Find co ordinates of circle where it cuts x and y

axis.

What is area of sector

a) below x axis

b) to the left of y axis

132) The points

A (7.3) B (5,1) C(2,4) D(6,8) lie on the circumference of a circle.

Find

a) co ordinates of the circle centre E and the radius r.

b)area of triangle ECD

133) Originally a sphere has a surface area of A

If the radius of this sphere is reduced to 1/3

of its original radius to form a new sphere ;

This new sphere isdivided into 4 identical

quarter spheres .

Find the ratio of :

a) new sphere surface area to original surface

area of sphere

b) new sphere volume to original sphere

volume

c) surface area of new sphere quarter to

to surface area of original sphere

134) the parabola

y = 3 ( n - 2 )^2 + 4

is rotated about y = 1.5

between n = 1 and n = 3

Sketch.

The horizontal axis is n.

By relocating the position of the curve find

the volume generated.

135) consider a red dice and a black dice each with

eight faces numbered

2 3 4 5 6 7 8 9 rolled simultaneously

What is the probability that the sum of the numbers on top face is

a)multiple of 3

b) is prime

c) greater then 17

What is rhe probability that each dice shows same

number

What is probability that the product of numbers

shown is divisible by 7

136) Square ABCD lies in first quadrant.

Vertice A lies on y axis

Vertice D lies on x axis

Vertice C has co ordinates (8,9)

Find area of square and co ordinates

of A,B,D

137) if 3^20 is divided by 5 what is the remainder

If 7^20 is divided by 5 what is the remainder

138) An interger when divided by

2 or 3 or 4 or 5 or 6 leaves a remainder

of 1 in each case.

What is the least value of this integer?

139) A square is divided into 16 identical squares.

How many squares are there?

140) A right angled triangle has a perimeter of 340

3 times the length of one perpendicular

side minus 13 gives the length of the

other perpendicular side.

What are the dimensions of the right angled

triangle?

141) Solve the following equation

Log ( 64m^3 + 22265) to the base 8

equals

Log (4m + 5) to the base 2

142) Consider two straight lines.

y = cx + d

y = ex + f

Show that the lines are perpendicular if

ce = - 1

143) Which is larger

5^16 or 7^ 10

Do not use calculator.

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