Study resources on Kenyaplex

Get ready-made curriculum aligned revision materials

Exam papers, notes, holiday assignments and topical questions – all aligned to the Kenyan curriculum.

Browse exam papers

Or go directly to:

Class notes Holiday assignments Topical questions Other resources

Make x the subject in the formula:

Answers

Kavungya answered the question on September 18, 2019 at 13:55

Answer Attachments

Next: Below is a diagram of a bony fish which lives in fresh water habitat.

Previous: Calculate the shortest distance in nautical miles between M(45°N, 38°E) andN(45°N, I 42°W)

View more Mathematics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

Related Questions

A man deposits his money in a savings bank on a monthly basis. Each deposits exceeds the previous one by Shs 500. If he started... (Solved)

A man deposits his money in a savings bank on a monthly basis. Each deposits exceeds the previous one by Shs 500. If he started by depositing Shs 1500, how much will he have deposited in 12 months?

Date posted: September 18, 2019 . Answers (1)
The velocity of a particle moving in a straight line is given by the equation ds/dt = -4t + 2 where s is adisplacement from... (Solved)

The velocity of a particle moving in a straight line is given by the equation ds/dt = -4t + 2 where s is a displacement from the origin in meters and t is time of motion.
a) Find when the particle is instantaneously at rest.
b) Given that S = 2 when t = o find a in terms of t
c) Find acceleration of the particle
d) At what instant shall displacement of the particle be O?

Date posted: September 18, 2019 . Answers (1)
Triangle OPQ is such that OP = p and OQ = q point R divides OP in the ratio 1:3 and a point S divided... (Solved)

Triangle OPQ is such that OP = p and OQ = q point R divides OP in the ratio 1:3 and a point S
divided PQ in the ratio 5:2 OS and RQ meet at T.
a) Express OS and QR in term of p an q.
b) Given that OT = KOS. Express OT in terms of K, p and q
c) (i) Given also that RT = h RQ, express OT interms of h , p and q
(ii) find the value of h and k
d) State the ratio in which Q divided RT.

Date posted: September 18, 2019 . Answers (1)
The figure below shows a right pyramid on a square base ABCD of sides 4cm VA =VB = VC=VD = 8cm a) Find the height VO... (Solved)

The figure below shows a right pyramid on a square base ABCD of sides 4cm VA =VB = VC=VD = 8cm

a) Find the height VO of the pyramid.
b) The angle between slant edge and the base ABCD
c) The angle between the planes VBC and ABCD
d) Find volume of the pyramid in litres.

Date posted: September 18, 2019 . Answers (1)
A curve passes through the origin and its gradient function is 3x² + 6x – 2 Find its equation (Solved)

A curve passes through the origin and its gradient function is 3x² + 6x – 2
Find its equation

Date posted: September 18, 2019 . Answers (1)
The nth term of an AP is given by 2n+ 3. Find the first three terms hence show that the sum of the... (Solved)

The nth term of an AP is given by 2n+ 3. Find the first three terms hence show that the sum of the first n terms is given by Sn = n² + 4n

Date posted: September 18, 2019 . Answers (1)
Wafula was asked to round off to 2/3 decimal places but he truncated it to 3 decimal places.Determine the percentage error as a result... (Solved)

Wafula was asked to round off 2/3 to 2 decimal places but he truncated it to 3 decimal places.
Determine the percentage error as a result of misunderstanding of the question

Date posted: September 18, 2019 . Answers (1)
ABCD is a trapezium in which angle B = angle C=90^oCalculate the length DC hence the area of the trapezium. (Solved)

ABCD is a trapezium in which angle B = angle C=90^o

Calculate the length DC hence the area of the trapezium.

Date posted: September 18, 2019 . Answers (1)
In the circle below chords PQ and RS intersect internally at X. Given that RX = 8cm,XS = 3cm and PQ=10cm. Calculate PX (Solved)

In the circle below chords PQ and RS intersect internally at X. Given that RX = 8cm,XS = 3cm
and PQ=10cm. Calculate PX

Date posted: September 18, 2019 . Answers (1)
Find the radius and centre of a circle whose equation is: 4x² + 4y² + 56x – 104y – 152 = 0 (Solved)

Find the radius and centre of a circle whose equation is:
4x² + 4y² + 56x – 104y – 152 = 0

Date posted: September 18, 2019 . Answers (1)
a) Construct a parallelogram PQRS such that PQ = 8cm PS = 4.5cm and angle QPS = 60^o b) Locate locus of a point... (Solved)

a) Construct a parallelogram PQRS such that PQ = 8cm PS = 4.5cm and angle QPS = 60^o
b) Locate locus of a point x such that x is equidistant from P and R.

Date posted: September 18, 2019 . Answers (1)
Given that matrix A = find matrix B such that A² = A + B (Solved)

Given that matrix A = find matrix B such that A² = A + B

Date posted: September 18, 2019 . Answers (1)
Find without using mathematical tables or calculator, the value of x which satisfy the equation. Log₂ (x² – 9) = 3 log₂ 2 +1 (Solved)

Find without using mathematical tables or calculator, the value of x which satisfy the equation.
Log₂ (x² – 9) = 3 log₂ 2 +1

Date posted: September 18, 2019 . Answers (1)
Make A the subject of the formula (Solved)

Make A the subject of the formula

Date posted: September 18, 2019 . Answers (1)
Evaluate the following leaving your answer in surd form. (Solved)

Evaluate the following leaving your answer in surd form.

Date posted: September 18, 2019 . Answers (1)
Use logarithms table to evaluate (Solved)

Use logarithms table to evaluate

Date posted: September 18, 2019 . Answers (1)
A manager wishes to hire two types of machine. He considers the following facts: ... (Solved)

A manager wishes to hire two types of machine. He considers the following facts:
Machine A Machine B
Floor space 2m³ 3 m³
No. of men required to operate 4 3
He has a maximum of 24m² of floor space and a maximum of 36 men available. In addition he is not allowed to hire more machines of type B than of type A.
(a)If he hires x machines of type A and y machines of type B, write down all the inequalities
that satisfy the above conditions.
(b)Represent the inequalities on the grid and shade the unwanted region.
(c)If the profit from machine A is sh. 4 per hour and that from using B is shs.8 per hour. What
number of machine of each type should the manager choose to give the maximum profit

Date posted: September 18, 2019 . Answers (1)
The table below shows marks scored by 100 form four students in a mathematics examination. a) Draw an ogive to represent the above information. (b) Using your... (Solved)

The table below shows marks scored by 100 form four students in a mathematics examination.

a) Draw an ogive to represent the above information.
(b) Using your graph, estimate:
(i) the median
(ii) the quartile deviation
(c) If the pass mark is 45%, how many students passed?

Date posted: September 18, 2019 . Answers (1)
Rates of tax in operation in 2010 are given in the table below:-K£ p.a Rate of tax %1-5208 105209-9744 259745-14292 2014293-18840 15Over 18840 30(a)Mr. Lukandu pays sh. 5,400 as P.A.Y.E... (Solved)

Rates of tax in operation in 2010 are given in the table below:-
K£ p.a..............Rate of tax %
1-5208.................10
5209-9744..............25
9745-14292.............20
14293-18840............15
Over 18840.............30
(a)Mr. Lukandu pays sh. 5,400 as P.A.Y.E monthly. He was entitled to house allowances of Ksh. 9,000 p.m and getting a monthly tax relief of sh. 1093. Calculate his monthly basic salary.
(b)Mr. Lukandu other deductions per month were;
Co-operative society contribution sh. 2,000
Loan payment sh. 2,500
Calculate his net salary per month.

Date posted: September 18, 2019 . Answers (1)
a)(i) Taking the radius of the earth, R= 6370km and p = 22/7, calculate the shortest distance between the two cities P(60^oN, 29^oW) and Q(60^oN, 31^oE)... (Solved)

a)(i) Taking the radius of the earth, R= 6370km and π = 22/7, calculate the shortest distance between
the two cities P(60^oN, 29^oW) and Q(60^oN, 31^oE) along the parallel of latitude.
(ii) If it is 1200hrs at P, what is the local time at Q
(b)An aeroplane flew due south from a point A (60^oN, 45^oE) to a point B. the distance covered by
the aeroplane was 800km. determine the position of B.

Date posted: September 18, 2019 . Answers (1)