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- In the formula V = pr2h, r is increased by 12% and h decreased by 15%.(Solved)
In the formula V = πr2h, r is increased by 12% and h decreased by 15%. Find the percentage
change in the value of V.
Date posted: August 13, 2019. Answers (1)
- If the area of triangle ABC is 770 cm2, find the area of triangle XYZ. (Solved)
Triangle ABC is the image of triangle XYZ when transformed under the matrix
If the area of triangle ABC is 770 cm2, find the area of triangle XYZ.
Date posted: August 13, 2019. Answers (1)
- Calculate the area of the segment cut off from a circle of radius 10cm by a chord which subtends an angle of 2.1c at the...(Solved)
Calculate the area of the segment cut off from a circle of radius 10cm by a chord which subtends an angle of 2.1c at the centre.
Date posted: August 13, 2019. Answers (1)
- Coordinates of points A and B are (2, -3) and (6, 5) respectively.(Solved)
Coordinates of points A and B are (2, -3) and (6, 5) respectively. Given that N is a point on AB such that the ratio AN:NB = 1:3, find the coordinates of point N.
Date posted: August 13, 2019. Answers (1)
- In the figure below, if ACB= 50°, AFB= 35° and FC is parallel to AD.(Solved)
In the figure below, if ACB= 50°, AFB= 35° and FC is parallel to AD.
Calculate:
(i) ABF
(ii) AEB
Date posted: August 13, 2019. Answers (1)
- A father was three time as old as his son fifteen years ago and four times as old as his son nineteen years ago. When...(Solved)
A father was three time as old as his son fifteen years ago and four times as old as his son nineteen years ago. When was the father twice as old as the Son?
Date posted: August 13, 2019. Answers (1)
- Find the equation of the normal to the curve y = 3x2 – 9x at the point (2, - 6).(Solved)
Find the equation of the normal to the curve y = 3x2 – 9x at the point (2, - 6). Express your answer in the form y = mx + c
Date posted: August 13, 2019. Answers (1)
- Make t the subject of the formula.(Solved)
Make t the subject of the formula.
Date posted: August 13, 2019. Answers (1)
- Construct a line PQ 7.5cm. Using a line inclined 30° at point P to line PQ, locate pointR which divides line PQ in the ratio...(Solved)
Construct a line PQ 7.5cm. Using a line inclined 30° at point P to line PQ, locate point R which divides line PQ in the ratio 2:3.
Date posted: August 13, 2019. Answers (1)
- Three businessmen Njoroge, Mwaura and Kimani contributed a total of sh. 82, 250 to start a business.(Solved)
Three businessmen Njoroge, Mwaura and Kimani contributed a total of sh. 82, 250 to start a business. The ratio of the contribution of Njoroge to Mwaura was 2:3 and that of Mwaura to Kimani was 4:5. How much did Kimani contribute?
Date posted: August 13, 2019. Answers (1)
- Solve for x and y (Solved)
Solve for x and y in 
Date posted: August 13, 2019. Answers (1)
- Without using tables or calculators evaluate.(Solved)
Without using tables or calculators evaluate.
Date posted: August 13, 2019. Answers (1)
- A two digit number is such that the difference between the ones digit and the tens digit is 2.If the two digits are interchanged, the...(Solved)
A two digit number is such that the difference between the ones digit and the tens digit is 2. If the two digits are interchanged, the sum of the new and the original number is 132. Find the original number.
Date posted: August 13, 2019. Answers (1)
- In the figure below, AC is an arc of a circle centre B, angle ABD = 600, AB =BC=7cm and CD=5cm. If AE is parallel...(Solved)
In the figure below, AC is an arc of a circle centre B, angle ABD = 600, AB =BC=7cm and CD=5cm. If AE is parallel to BD and AB is parallel to ED. Calculate the area of the shaded region.
Date posted: August 13, 2019. Answers (1)
- The table below shows the height of tree in Manga forest in metres(Solved)
The table below shows the height of tree in Manga forest in metres
Using an assumed meanof 34.5, calculate:-
(a) The mean
(b) The median
(c) The standard deviation
Date posted: August 13, 2019. Answers (1)
- A right angled isosceles triangle has area of 4 square units. Find the perimeter of the triangle leaving your answer in surd form.(Solved)
A right angled isosceles triangle has area of 4 square units. Find the perimeter of the triangle leaving your answer in surd form.
Date posted: August 13, 2019. Answers (1)
- On the grid provided, draw the triangle ABC and its image A1B1C1 on the same axes.(Solved)
A transformation represented by the matrix 
maps A(1, 3), B(3, 3) and C(2, 1) onto A1B1 and C1 respectively.
(a) (i) On the grid provided, draw the triangle ABC and its image A1B1C1 on the same axes.
(ii) Hence or otherwise determine the area of the triangle A1B1C1
(b) Another transformation represented by the matrix
maps A1B1C1 onto A11B11C11.
(i) Plot triangle A11B11C11 on the same axes
(ii) Describe the transformation represented by the matrix
(c) Determine the matrix of the single transformation which maps A11B11C11 onto ABC.
Date posted: August 13, 2019. Answers (1)
- A cylindrical iron pipe is 2.1 m long and 12cm in external diameter, the metal is 1cm thickand its density is 7.8 g/cm3. Taking pie...(Solved)
A cylindrical iron pipe is 2.1 m long and 12cm in external diameter, the metal is 1cm thick and its density is 7.8 g/cm3. Taking pie as 22/7 find its mass.
Date posted: August 13, 2019. Answers (1)
- Find the value of (Solved)
Find the value of
Date posted: August 13, 2019. Answers (1)
- The gradient of the of the curve y = ax2 +bx at the origin is equal to 8. Find the value of a and b...(Solved)
The gradient of the of the curve y = ax2 +bx at the origin is equal to 8. Find the value of a and b if the curve has a maximum turning point at x = 4
Date posted: August 13, 2019. Answers (1)