KCSE MATHEMATICS QUESTIONS AND SOLUTIONS

Make V the subject of the formula:

MARKING SCHEME

the displacement, s metres of a moving particle after t seconds in given by

​​KCSE 2020 MATHEMATICS ALT A PAPER 1 QUESTION 23 ON MATRIX

​THE NUMBER OF STUDENTS IN 40 SCHOOLS IN A CERTAIN SUB-COUNTY WERE RECORDED AS FOLLOWS:

​​​KCSE 2020 MATHEMATICS ALT A PAPER 1 QUESTION 21 ON VECTORS

A forest is enclosed by four straight boundaries AB, BC, CD and DA. Point B is 25 km on a bearing of 315° from A, C is directly south of B on a bearing of 260° from A and D is 30 km on a bearing of 210° from C.

The figure below shows a quadrilateral ABCD and a mirror line M1M2

In a 4×400 m relay competition, a team of athletes each completed their round in 45 sec, 43 sec, 44 sec and 45 sec respectively. If the race started at 1:35:31 p.m., find the time when the team completed the race. (3 marks)

A vertical electric pole was erected 6.4 m from the foot of a vertical fencing pole on the same horizontal level. The fencing pole is 2 m high. The angle of elevation of the top of the electric pole from the top of the fencing pole is 30°. Determine the height of the electric pole correct to 1 decimal place. (2 marks)

​Given that sin(θ+30°)=cos2θ, find the value of cos(θ+40°). (3 marks)

Answer

​Using the grid provided below, solve the simultaneous equations.
x-4y = -5
-x+2y= 1
(3 marks)

Answer

​The sum of the interior angles of a regular polygon is 1260°. Find the size of each exterior angle of the polygon. (3 marks)

Answer

The line 2y+x=1 is perpendicular to a line L. Line L passes through point (2,-1). Determine the equation of L in the form Y = mx + c, where m and c are constants.

Answer

KCSE 2020 MATHEMATICS ALT A PAPER 1 QUESTION 5

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KCSE 2020 MATHEMATICS ALT A PAPER 1 QUESTION 4

ANSWER

​KCSE 2020 MATHEMATICS ALT A PAPER 1 QUESTION 3

ANSWER

KCSE 2020 MATHEMATICS PAPER 1 QUESTION NUMBER 2 

ANSWER

KCSE 2020 MATHEMATICS ALT A PAPER 1 QUESTION 1

ANSWER: