- The positions vectors of point A and B are a and b respectively. C is another point with Positions vector c = 3/2 b –...(Solved)
The positions vectors of point A and B are a and b respectively. C is another point with Positions vector c = 3/2 b – ½ a.
Express in terms of a and b
i) Vector AC,AB. Hence show that A,B and C are collinear
ii) Determine the ratio A B:BC
Date posted: August 13, 2019. Answers (1)
- If P,Q and R are the points (2,-4), (4,0) and (1,6) respectively. Use the vector method to find the co-ordinates of points S given that...(Solved)
If P,Q and R are the points (2,-4), (4,0) and (1,6) respectively. Use the vector method to find the co-ordinates of points S given that PQRS is a Parallelogram
Date posted: August 13, 2019. Answers (1)
- A rectangular tank whose internal dimensions are 2.04 m by 1.68 m by 26.4 m is seven – eighth full of milk
a) If the tank...(Solved)
A rectangular tank whose internal dimensions are 2.04 m by 1.68 m by 26.4 m is seven – eighth full of milk
a) If the tank is made of metal of thickness 3mm. Calculate the external volume of
the tank in m3 when closed.
b)i) Calculate the volume of milk in the tank in cubic metres.The milk is to he packed in small packets. Each packet is in the shape of a right- Pyramid on an equilateral triangular base of side 19.2 cm. The height of each packet is 13.6 cm. Full packets obtained are sold at Kshs. 35 Per packet. Calculate; the number of full packets.
ii) The amount of money obtained from the sale of the packets.
Date posted: August 13, 2019. Answers (1)
- Use ruler and a compass only for all constructions in these questions.(Solved)
Use ruler and a compass only for all constructions in these questions.
a) Construct a triangle ABC such that angle BAC=750,AB=7cm and BC= 8cm.
b) Construct a perpendicular from B to meet AC at M. Measure BM and hence calculate the area of triangle AC.
c) Construct a line DE parallels to AC and mid-way between AC and B to meet BM at D. With DM and MC as sides, construct a rectangle DECM
d) A point P lies inside the rectangle and close to M than E. It is also nearer side AC than AB. Shade the region in which P lies.
Date posted: August 13, 2019. Answers (1)
- Ruhu, Toru, and Lwamawa contributed a total of Kshs. 8041950.00 for their jointcampaigns ahead of 2012 general elections. The ratios of their contributions were Ruhuto...(Solved)
Ruhu, Toru, and Lwamawa contributed a total of Kshs. 8041950.00 for their joint campaigns ahead of 2012 general elections. The ratios of their contributions were Ruhu to Toru 5:4 and Lwamawa to Toru 2:3.
a) How much did each contribute?
b) Ruhu further contributed Kshs. 875,000.00 towards the campaigns kitty. in response, Toru and Lwamawa increased their contributions in the ratios 10:9 and 11:6 respectively. How much did Toru and Lwamawa further contribute.
c) The three agreed that if they win elections they would share the 15 cabinet positions amongst them in the ratio of their contributions. How many cabinets positions did Lwamawa get?
Date posted: August 13, 2019. Answers (1)
- The position vector S of points A and B are a and b respectively. Determine the modulus of AB if a = 2i + 4j +...(Solved)
The position vector S of points A and B are a and b respectively. Determine the modulus of AB if a = 2i + 4j + 3k and b= 2i+3j
Date posted: August 13, 2019. Answers (1)
- A submarine sails due North from point A for 170km to a point B. 1 changes its course to N 520 W and sails to...(Solved)
A submarine sails due North from point A for 170 km to a point B. 1 changes its course to N 520 W and sails to a point c If C is N 18° W of A., calculate the distance from C to A.
Date posted: August 13, 2019. Answers (1)
- Deduce the value of tan 54° from this result(Solved)
From a mathematical experiment it was found out that
Deduce the value of tan 54° from this result leaving your answer in the form 
where a, b and c are integers.
Date posted: August 13, 2019. Answers (1)
- A committee of three is to be selected from 5 men and 3 women. If the committee is selected at random, find the probability of...(Solved)
A committee of three is to be selected from 5 men and 3 women. If the committee is selected at random, find the probability of arriving of two men and one woman in the committee.
Date posted: August 13, 2019. Answers (1)
- Find the distance in nautical miles between two places on the northern hemisphere with positions N (60°N, 18°E) and M (60°N, 102°W) along the parallel...(Solved)
Find the distance in nautical miles between two places on the northern hemisphere with positions N (60°N, 18°E) and M (60°N, 102°W) along the parallel of latitude.
Date posted: August 13, 2019. Answers (1)
- Graham’s money-box contains only sh. 5 coins and sh. 10 coins. There are 24 coins and their total value is sh. 150. Find how many...(Solved)
Graham’s money-box contains only sh. 5 coins and sh. 10 coins. There are 24 coins and their total value is sh. 150. Find how many of each kind of coins there are in the box.
Date posted: August 13, 2019. Answers (1)
- The fourth term in (a + x)3 is equal to the third term in (1- 2x)5 for the same values of x when expanded in...(Solved)
The fourth term in (a + x)3 is equal to the third term in (1- 2x)5 for the same values of x when expanded in increasing powers of x . Find the value of x .
Date posted: August 13, 2019. Answers (1)
- 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)