KCSE MATHEMATICS QUESTIONS AND SOLUTIONS ~ Topically Analyzed
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Form 3 Mathematics
a) Expand and simplify the binomial expression (2 –x)7 in ascending powers of x.
b) Use the expansion up to the fourth term to evaluate (1.97)7 correct to 4 decimal places Form 1 Mathematics
In a certain commercial bank, customer may withdraw cash through one of the two tellers at the counter. On average, one teller takes 3 minutes while the other teller takes 5 minutes to serve a customer. If the two tellers start to serve the customers at the same time, find the shortest time it takes to serve 200 customers
Form 2 MathematicsForm 3 MathematicsForm 1 MathematicsForm 3 Mathematics
find a quadratic equation whose roots are 1.5 + sq root 2 and 1.5 - sq root 2, expressing it in the form ax2 + bx + c =0, where a, b and c are integers
Form 1 Mathematics
A farmer feed every two cows on 480 Kg of hay for four days. The farmer has 20 160 Kg of hay which is just enough to feed his cows for 6 weeks. Find the number of cows in the farm.
Form 3 Mathematics
The table below shows values of x and some values of y for the curvey = x +3+3x2+-4x-12 in the range -4 ≤ x ≤ 2.
a) Complete the table by filling in the missing values of y.
b) On the grid provided, draw the graph y=x3 + 3x2+ -4x – 12 for -4 ≤ x ≤ 2.Use the scale. Horizontal axis 2cm for I unit and vertical axis 2cm for 5 units.
c) By drawing a suitable straight line on the same grid as the curve, solve the equation x3+3x2-5x-6=0 Form 1 Mathematics
Halima deposited Ksh. 109375 in a financial institution which paid simple interest at the rate of 8% p.a. At the end of 2 years, she withdrew all the money. She then invested the money in share. The value of the shares depreciated at 4% p.a. during the first year of investment. In the next 3 years, the value of the shares appreciated at the rate of 6% every four months
a) Calculate the amount Halima invested in shares. b) Calculate the value of Halima's shares. (i) At the end of the first year; (ii) At the end of the fourth year, to the nearest shilling. c) Calculate Halima„s gain from the share as a percentage. (ii) Find the values of x and y. (iii) Calculate the time taken before the policemen were unable to communicate. Form 4 MathematicsForm 2 Mathematics
Two policemen were together at a road junction. Each had a walkie talkie. The maximum distance at which one could communicate with the other was 2.5 km.
One of the policemen walked due East at 3.2 km/h while the other walked due North at 2.4 km/h the policeman who headed East traveled for x km while the one who headed North traveled for y km before they were unable to communicate. (a) Draw a sketch to represent the relative positions of the policemen. (b) (i) From the information above form two simultaneous equations in x and y. Form 2 MathematicsForm 4 Mathematics
a) complete the table below, giving the values correct to 2 decimal places.
b) On the grid provided, draw the graphs of y=sin 2x and y=3cosx-2 for 00 ≤ x ≤3600 on the same axes.
Use a scale of 1 cm to represent 300 on the x-axis and 2cm to represent 1 unit on the y-axis. c) Use the graph in (b) above to solve the equation 3 Cos x – sin 2x = 2. d) State the amplitude of y=3cosx-2. Form 1 Mathematics
a) A trader deals in two types of rice; type A and with 50 bags of type B. If
he sells the mixture at a profit of 20%, calculate the selling price of one bag of the mixture. b) The trader now mixes type A with type B in the ratio x: y respectively. If the cost of the mixture is Ksh 383.50 per bag, find the ratio x: y. c) The trader mixes one bag of the mixture in part (a) with one bag of the mixture in part (b). Calculate the ratio of type A rice to type B rice in this mixture. Form 4 Mathematics
Find in radians, the values of x in the interval 00≤ x ≤ 2π0+ for which 2 cos 2x=1.
(Leave the answers in terms of π ) Form 4 Mathematics
A particle moves in a straight line from a fixed point. Its velocity Vms-1 after t seconds is given by V=9t2 – 4t +1
Calculate the distance traveled by the particle during the third second. Form 4 MathematicsForm 3 Mathematics
The equation of a circle is given by 4x2 + 4y2+- 8x+ 20y – 7 = 0. Determine the coordinates of the centre of the circle.
Form 4 Mathematics
Points A(2,2)and B(4,3) are mapped onto A‟(2,8) and b‟ (4,15) respectively by a transformation T.
Find the matrix of T. Form 2 Mathematics |
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