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Three numbers are such that m2n3k = 360. Find m, n, and k.
(Solved)
Three numbers are such that m2n3k = 360. Find m, n, and k.
Date posted:
November 19, 2019
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Answers (1)
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Agotho has a rectangular plot that was measured to the nearest meter and found to be 80m in length and 60m in width. Determine the...
(Solved)
Agotho has a rectangular plot that was measured to the nearest meter and found to be 80m in length and 60m in width. Determine the percentage error in its perimeter.
Date posted:
November 19, 2019
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Answers (1)
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Evaluate without using Mathematical tables or a calculator.
2log5 - 1/2 log16 + 2 log40
(Solved)
Evaluate without using Mathematical tables or a calculator.
2log5 - 1/2 log16 + 2 log40
Date posted:
November 19, 2019
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Answers (1)
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The region R in the figure below is defined by the inequalities L1, L2 and L3.
Find the three inequalities.
(Solved)
The region R in the figure below is defined by the inequalities L1, L2 and L3.

Find the three inequalities.
Date posted:
November 19, 2019
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Answers (1)
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A regular polygon has internal angle of 1500 and side of length 10cm.
(a) Find the number of sides of the polygon.
(b) Find the perimeter...
(Solved)
A regular polygon has internal angle of 1500 and side of length 10cm.
(a) Find the number of sides of the polygon.
(b) Find the perimeter of the polygon.
Date posted:
November 19, 2019
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Answers (1)
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In a carton there are 8 red pens, 5 blue pens and 2 green pens. Two pens are picked at random
from the carton without replacement.
a)...
(Solved)
In a carton there are 8 red pens, 5 blue pens and 2 green pens. Two pens are picked at random
from the carton without replacement.
a) Draw a probability three diagram to represent this information.
b) Use the tree diagram to find the probability that:
i) The first pen picked is red.
ii) The first pen picked is blue or green.
iii) The two pens picked are blue.
iv) At least one of the pens picked is green.
Date posted:
November 19, 2019
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Answers (1)
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An airplane leaves town A(400N,1550W) and flys to town B(400N,250E) using the shortest route and at a speed of 450 knot (Take ?? =3.142 and...
(Solved)
An airplane leaves town A(400N,1550W) and flys to town B(400N,250E) using the shortest route and at a speed of 450 knot (Take 𝜋 =3.142 and radius of the earth R=6370km.)
(a)i) Calculate the distance between A and B covered by the airplane in nautical miles.
ii) Calculate the time taken by the aeroplane to fly from A to B.
(b) From B the plane flies westwards along the latitude to a town C(400N, 130W). Calculate the distance BC in kilometres.
(c) From town C, The plane took off at 3:10 p.m towards town D(100N, 130W) at the same speed. At what time did the plane land at D?
Date posted:
November 19, 2019
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Answers (1)
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A car hire company hire out cars such that there is a fixed charge and another part which varies with the distance covered. Taking C...
(Solved)
A car hire company hire out cars such that there is a fixed charge and another part which varies with the distance covered. Taking C to stand for total cost, d for distance covered, k for fixed charge and t for charge per kilometer.
a) Express C in terms of k,tand d.
b) Given that the total cost is 7000 when the distance is 200km and the total cost is 11000 when distance is 400km.
i) Find the values of k and t.
ii) Find the equation connecting c,t,k and d.
(c) Find the cost of hiring a car to area a distance of 500km.
(d) Due to increase in fuel prices, the company increased the fixed charge by 20% and charge per kilometer by 10%:
i) Find the cost of hiring the car for 500km.
ii) Find the percentage increase of hiring the car for the 500km.
Date posted:
November 19, 2019
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Answers (1)
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Find the centre and the radius of a circle whose equation is x2 + y2 + 6y - 8x - 2y = 0.
(Solved)
Find the centre and the radius of a circle whose equation is x2 + y2 + 6y − 8x − 2y = 0.
Date posted:
November 18, 2019
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Answers (1)
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Find the value of x that satisfies the equation. log(z+5)=log4 –log(x+2).
(Solved)
Find the value of x that satisfies the equation. log(z+5)=log4 –log(x+2).
Date posted:
November 18, 2019
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Answers (1)
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The length of a rectangle is (x+1) cm. its width is 3cm shorter than its length. Given that the area of the rectangle is 22cm,...
(Solved)
The length of a rectangle is (x+1) cm. its width is 3cm shorter than its length. Given that the area of the rectangle is 22cm, find its length using completing the square method.
Date posted:
November 18, 2019
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Answers (1)
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Make A the subject of the formula
(Solved)
Make A the subject of the formula 
Date posted:
November 18, 2019
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Answers (1)
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Simplify
(Solved)
Simplify 
Date posted:
November 18, 2019
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Answers (1)
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Given that 8 = y = 12 and 1 = x = 6 find the maximum possible value of
(Solved)
Given that 8 ≤ y ≤ 12 and 1 ≤ x ≤ 6 find the maximum possible value of 
Date posted:
November 18, 2019
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Answers (1)
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Members of a group decides to raise k£ 100 towards a charity. Five of them were unable to contribute. Each of the rest had therefore...
(Solved)
Members of a group decides to raise k£ 100 towards a charity. Five of them were unable to contribute. Each of the rest had therefore to pay k£ 1 more, in order to raise the same amount.
a) If the original number of member was x, writes downs:
i) An expression of how much each was originally to contribute.
ii) Two distinct expressions of how much each contributed after the five pulled out.
b) Calculate the value of x.
c) Solve the equation 
Date posted:
November 18, 2019
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Answers (1)
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Two towns, Meru and Maua are 80km a part, Kimathi started cycling from Meru to Maua at 10:00 a.m at an average speed of 40km/h....
(Solved)
Two towns, Meru and Maua are 80km a part, Kimathi started cycling from Meru to Maua at 10:00 a.m at an average speed of 40km/h. Mutuma started his journey from Maua to Meru at 10:30 a.m and travelled by car at an average speed of 60km/h.
(a) Calculate:
i) The time taken by Kimathi and Mutuma to meet.
ii) The distance from Meru when Kimathi and Mutuma met.
iii) The time of the day when the two met.
(b) Murianki cycled from his home to a school 6km away in 20 minutes. He stopped at the school for 5 minutes, before taking a motorbike to a town 40 km away. The motorbike travelled at 75km/h. On the grid provided, draw a distance time graph to represent Murianki’s journey.

Date posted:
November 18, 2019
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Answers (1)
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The table below shows the age groups and number of people who are HIV/ AIDS positive, in a certain sub county in Kenya.
a) State the...
(Solved)
The table below shows the age groups and number of people who are HIV/ AIDS positive, in a certain sub county in Kenya.

a) State the modal age group.
b) Calculate the mean age of the people who are HIV/AIDS Positive.
c) Calculate the median of the age group.
d) Draw on the grid provided a histogram to represent the above information.
Date posted:
November 18, 2019
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Answers (1)
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The diagram below shows a solid made of a hemisphere and a cylinder. The radius of both the cylinder and the hemisphere is 3cm. The...
(Solved)
The diagram below shows a solid made of a hemisphere and a cylinder. The radius of both the cylinder and the hemisphere is 3cm. The length of the cylinder is 12cm.

a) i) Calculate the volume of the solid.
ii) The solid fits in a box in the shape of a cuboid 15 cm by 6cm by 6cm. Calculate the volume of the box not occupied by the solid correct to four significant figures.
b) i) Calculate the total surface area of the solid correct to four significant figures.
ii) The surface of the solid is to be painted. One millilitre of paint covers an area of 8cm2. The cost of paint is Ksh 900 per litre. Calculate the cost of the paint required.
Date posted:
November 18, 2019
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Answers (1)
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The figure below shows triangle T with vertices P(2,4), Q(6,2) and R(4,8). It is mapped onto triangle T/ with vertices P/(10,0), Q/(8,-4) and R/(14, -2)...
(Solved)
The figure below shows triangle T with vertices P(2,4), Q(6,2) and R(4,8). It is mapped onto triangle T/ with vertices P/(10,0), Q/(8,-4) and R/(14, -2) by a rotation.
Draw on the same axis T/ the image of triangle T.

Date posted:
November 18, 2019
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Answers (1)
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Line K whose equation is 2y - 6 = 4x is perpendicular to another line Q. Find the equation of line Q if it passes...
(Solved)
Line K whose equation is 2y - 6 = 4x is perpendicular to another line Q. Find the equation of line Q if it passes through point. (-2,7).
Date posted:
November 18, 2019
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Answers (1)