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- A tree T is on a desert island. A rock (R) is 5 km away from the tree on a bearing of...(Solved)
A tree T is on a desert island. A rock (R) is 5 km away from the tree on a bearing of 290o. An active volcano (V) is equidistant from the tree and he rock on a bearing of 70o from the rock.
(a) Using a scale of 2cm to 1km, make a scale drawing showing T,R, and V.
(b) If the volcanic erupts, anywhere within 3 km of it is in danger. Draw the boundary of
the danger area. On your diagram.
(c)A straight river runs parallel to the line RT, 1km away from it on the opposite side of RT
to the volcano. Mark the river on your diagram and its danger area.
(d)If the river floods , anywhere within 1 km of it is in danger. Shade the are on your
diagram that is in danger of both the river and the volcano.
Date posted: September 17, 2019. Answers (1)
- A bag contains 5 red, 4 white and 3 blue beads. Three beads are selected at random without replacement. Find the probability that
(a)...(Solved)
A bag contains 5 red, 4 white and 3 blue beads. Three beads are selected at random without replacement. Find the probability that
(a) The first red bead is the third bead picked.
(b) The beads selected were, white and blue;
(i) in that order
(ii) In any order
(c) No red bead is picked
(d) Beads picked are of the same colour.
Date posted: September 17, 2019. Answers (1)
- Find the inverse of the matrix . hence find the coordinates of the point of intersection of the line 3x+ y = 4 and ...(Solved)
Find the inverse of the matrix 
. hence find the coordinates of the point of intersection of the line 3x+ y = 4 and 2x –y = 1
Date posted: September 17, 2019. Answers (1)
- A group of 5 men can do a piece of work in 12 hours. How long would a group of 8 men take to...(Solved)
A group of 5 men can do a piece of work in 12 hours. How long would a group of 8 men take to complete the same work if they work at thrice the rate of the first group?
Date posted: September 17, 2019. Answers (1)
- Find the compound interest on shs. 15, 200 on deposited in a bank paying compound interest of 10.5% per annum for 5 year.(Solved)
Find the compound interest on shs. 15, 200 on deposited in a bank paying compound interest of 10.5% per annum for 5 year.
Date posted: September 17, 2019. Answers (1)
- The fourth term of geometric sequence is 54 and the sixth term is 486. Find the common ratio and the first term.(Solved)
The fourth term of geometric sequence is 54 and the sixth term is 486. Find the common ratio and the first term.
Date posted: September 17, 2019. Answers (1)
- Solve for x in 2 + log7 ( 3x-4) = log7 98.(Solved)
Solve for x in 2 + log7 ( 3x-4) = log7 98.
Date posted: September 17, 2019. Answers (1)
- If OA = 3 i + 2j – 4k and OB = 4i + 5j – 2k, P divides AB in the ratio 3:-2....(Solved)
If OA = 3 i + 2j – 4k and OB = 4i + 5j – 2k, P divides AB in the ratio 3:-2. Determine the modulus of Op leaving your answer to 1 decimal place. Given that O is the origin.
Date posted: September 17, 2019. Answers (1)
- Make q the subject of the formula (Solved)
Make q the subject of the formula
Date posted: September 17, 2019. Answers (1)
- After millet, the cost per kilogram of maize flour and millet flour shs 24 and shs. 40 respectively. The maize and millet flour are now...(Solved)
After millet, the cost per kilogram of maize flour and millet flour shs 24 and shs. 40 respectively. The maize and millet flour are now mixed in the ration 5:3 what should the selling price per kilogramme of the mixture be, in order to make a 25% profit?
Date posted: September 17, 2019. Answers (1)
- a) Expand ( 1+ ¼ x)4
b) use your expansion in (a) above to evaluate ( 0.975)4 to 4 significant figures.(Solved)
a) Expand ( 1+ ¼ x)4
b) use your expansion in (a) above to evaluate ( 0.975)4 to 4 significant figures.
Date posted: September 17, 2019. Answers (1)
- Find the radius and the coordinates of the centre of the circle whose equations is
2x2 + 2y2 – 6x = 10y + 9 =0
(Solved)
Find the radius and the coordinates of the centre of the circle whose equations is
2x2 + 2y2 – 6x = 10y + 9 =0
Date posted: September 17, 2019. Answers (1)
- The figure shows a circle , centre o of radius 7cm MN and PN are tangents to the circle at M and P...(Solved)
The figure shows a circle , centre o of radius 7cm MN and PN are tangents to the circle at M and P respectively. ON = 25 cm calculate the length MP
Date posted: September 17, 2019. Answers (1)
- Use logarithms, correct to 4 decimal places, to evaluate.
(Solved)
Use logarithms, correct to 4 decimal places, to evaluate.
Date posted: September 17, 2019. Answers (1)
- (a) An arithmetic progression is such that the first term is -5, the last is 135 and the sum of progression is...(Solved)
(a) An arithmetic progression is such that the first term is -5, the last is 135 and the sum of progression is 975. Calculate
(i) The number of terms in the series.
(ii) The common difference of the progression.
(b)The sum of the first three terms of a geometric progression is 27 and first term is 36.
Determine the common ratio and the value of the fourth term.
Date posted: September 17, 2019. Answers (1)
- The figure below shows a right pyramid VABCD with a square base of side 6 cm. VA = VB = VC = VD =...(Solved)
The figure below shows a right pyramid VABCD with a square base of side 6 cm. VA = VB = VC = VD = 12 cm
Calculate;
(i) The height of the pyramid correct to 2 d.p
(ii) The angle between the planes VAD and VBC correct to 2 significant figures.
Date posted: September 17, 2019. Answers (1)
- The taxation rate, for 2007 were as in the table below. In certain month in 2007, Mutai paid a tax of Ksh. 3000...(Solved)
The taxation rate, for 2007 were as in the table below.
In certain month in 2007, Mutai paid a tax of Ksh. 3000 after having been given a personal relief of Ksh. 1056 per month.
(a)How much tax per month could he have paid if he did not get tax relief.
(b)Calculate the his total taxable income in Ksh. P.m.
(c)Given that his total taxable allowance amount to Ksh. 4520 P.m. Calculate his monthly basic
salary in Kenya shillings.
Date posted: September 17, 2019. Answers (1)
- The graph below is part of the straight line graph obtained from the initial equation y = axn use the graph to calculate...(Solved)
The graph below is part of the straight line graph obtained from the initial equation y = axn use the graph to calculate the value of a and n,
Date posted: September 17, 2019. Answers (1)
- The area of a triangle where height is 4.4cm measured to the nearest millimeter is 13.2cm2. Determine the maximum possible length of the base of...(Solved)
The area of a triangle where height is 4.4cm measured to the nearest millimeter is 13.2cm2. Determine the maximum possible length of the base of the triangle to 4 s.f.
Date posted: September 17, 2019. Answers (1)
- The figure below shows a circle with secants ABE and CDE, if AB = 4cm and BE = 6cm and DE =...(Solved)
The figure below shows a circle with secants ABE and CDE, if AB = 4cm and BE = 6cm and DE = 4cm. find the length of CD.
Date posted: September 17, 2019. Answers (1)