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- In the diagram below OA = a, OB = b the points P and Q are such that AP = 2/3 AB, OQ = 1/3...(Solved)
In the diagram below OA = a, OB = b the points P and Q are such that AP = 2/3 AB, OQ = 1/3 OA
(a) Express OP and BQ in terms of a and b
(b) If OC = hOP and BC = kBQ, Express OC in two different way and hence
(i) Deduce the value of h and k.
(ii) Express vector OC in terms of a and b only.
(iii) State the ratio in which C divides BQ
Date posted: May 10, 2019. Answers (1)
- The diagram below represents the cross section of a solid prism of length 8cm(Solved)
The diagram below represents the cross section of a solid prism of length 8cm
(a) Calculate the volume of the prism.
(b) Given that the density of the prism is 5.75gcm-³, calculate its mass in grams.
(c) A second prism is similar to the first one but it made of a different materials. The volume of the second prism is
246.24cm³.
Calculate the area of the cross-section of the second prism.
(d) Given that the ratio of the mass of the first prism to that of the second is 2.5, find the density of the second prism.
Date posted: May 10, 2019. Answers (1)
- A Kenyan bank buys and sells foreign currencies as shown below.(Solved)
A Kenyan bank buys and sells foreign currencies as shown below.
A tourist arrived in Kenya with 105,000 Hong Kong dollars and change the whole amount to Kenya Shillings. While in
Kenya, she spent Kshs 403,879 and changed the balance to South African Rands before leaving for South Africa.
Calculate the amount in South African Rand that she received.
Date posted: May 10, 2019. Answers (1)
- Four people working 5 hours per day can clear a piece of land in 4 days. How many days would it take 10 people to
clear...(Solved)
Four people working 5 hours per day can clear a piece of land in 4 days. How many days would it take 10 people to
clear the same piece of land working 4 hours per day?
Date posted: May 10, 2019. Answers (1)
- Last year, Nafula was four times as old as her son, Kamau. In four years time, the sum of their ages will be 53.
Determine their...(Solved)
Last year, Nafula was four times as old as her son, Kamau. In four years time, the sum of their ages will be 53.
Determine their present ages
Date posted: May 10, 2019. Answers (1)
- A fruit seller bought 144 pineapples at Kshs 100 for every six pineapples. He sold some of them at Kshs 72 for every
three and the...(Solved)
A fruit seller bought 144 pineapples at Kshs 100 for every six pineapples. He sold some of them at Kshs 72 for every
three and the rest at Kshs 60 for every two. If he make a 65% profit, calculate the number of pineapples sold at Kshs
72 for every three.
Date posted: May 10, 2019. Answers (1)
- A rostrum is made by cutting off the upper part of a cone along a plane parallel to the base at 2/3 up the height....(Solved)
A rostrum is made by cutting off the upper part of a cone along a plane parallel to the base at 2/3 up the height. What
fraction of the volume of the cone does the rostrum represent?
Date posted: May 10, 2019. Answers (1)
- Find the value of x which satisfy the equation.(Solved)
Find the value of x which satisfy the equation.
52x - 6 × 5x + 5 = 0
Date posted: May 10, 2019. Answers (1)
- Angle of 1.8c at the centre of a circle subtends an arc off 46.38cm. Find the area of the arc encloses and the radius.(Solved)
Angle of 1.8c at the centre of a circle subtends an arc off 46.38cm. Find the area of the arc encloses and the radius.
Date posted: May 10, 2019. Answers (1)
- Expand the expression.(Solved)
Expand the expression.
Date posted: May 10, 2019. Answers (1)
- The figure below shows triangle PQR in which PR = 12cm. T is a point on PR such that TR =4cm. Line ST is parallel...(Solved)
The figure below shows triangle PQR in which PR = 12cm. T is a point on PR such that TR =4cm. Line ST is parallel to
QR. If the area of triangle PQR is 336cm². Find the area of the quadrilateral STQR.
Date posted: May 10, 2019. Answers (1)
- Solve the simultaneous equations(Solved)
Solve the simultaneous equations
Date posted: May 10, 2019. Answers (1)
- Without using mathematical tables or a calculator evaluate.(Solved)
Without using mathematical tables or a calculator evaluate.
Date posted: May 10, 2019. Answers (1)
- The points P, Q and R lie on a straight line. The position vectors of P and R are 2i+ 6j + 13k and 5i...(Solved)
The points P, Q and R lie on a straight line. The position vectors of P and R are 2i+ 6j + 13k and 5i – 3j + 4k
respectively. Find
(i) the position vector of Q
(ii) the length of PQ
Date posted: May 10, 2019. Answers (1)
- In the figure given below RN and MS are chords of a circle that meet at an external point P. PQ is a tangent to...(Solved)
In the figure given below RN and MS are chords of a circle that meet at an external point P. PQ is a tangent to the circle
at Q. PR = 2cm, PN = 12cm and PM = 3cm.
Calculate the length of:
(i) PS
(ii) PQ
Date posted: May 10, 2019. Answers (1)
- Find the equation of a tangent to the curve y = x3 – 2x2 + 3x – 1 at x = 2(Solved)
Find the equation of a tangent to the curve y = x3 – 2x2 + 3x – 1 at x = 2
Date posted: May 10, 2019. Answers (1)
- Presently a machine costs KSh. 364,000. What was its cost 5 years ago, if it depreciated at 12% per year(Solved)
Presently a machine costs KSh. 364,000. What was its cost 5 years ago, if it depreciated at 12% per year
Date posted: May 10, 2019. Answers (1)
- Find the centre and radius of a circle whose equation is x2 + y2– 4x + 6y – 3 = 0(Solved)
Find the centre and radius of a circle whose equation is x2 + y2– 4x + 6y – 3 = 0
Date posted: May 10, 2019. Answers (1)
- A piece of forest is in form of a triangle as shown below. Calculate its perimeter to the nearest metre.(Solved)
A piece of forest is in form of a triangle as shown below. Calculate its perimeter to the nearest metre.
Date posted: May 10, 2019. Answers (1)
- If 4x2 + 8x + (k-3) is a perfect square, find the value of k.(Solved)
If 4x2 + 8x + (k-3) is a perfect square, find the value of k.
Date posted: May 10, 2019. Answers (1)