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In the figure below AOC is a diameter, ADG and BCFG are straight lines, angle ACB=420, angle CAE=740 and angle DEC=360
(Solved)
In the figure below AOC is a diameter, ADG and BCFG are straight lines, angle ACB=420, angle CAE=740 and angle DEC=360
Find the following angles, giving reasons in each case.
a) Angle CDE
b) Angle BDC
c) Angle DCA
d) Reflex angle COE
e) Angle DGF
Date posted:
May 7, 2019
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Answers (1)
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A certain number of Jua kali artisan agreed to contribute equally to buy a welding machine worth Ksh 12,000. Five of
the artisan pulled out so...
(Solved)
A certain number of Jua kali artisan agreed to contribute equally to buy a welding machine worth Ksh 12,000. Five of
the artisan pulled out so the others agreed to contribute an extra Kshs 100 each. Their contribution enabled them to
buy a machine worth Ksh 2000 more than the previous machine.
a) If the original number of artisan was n, write down:
i) An expression of how much each artisan was to contribute originally.
ii) An expression of how much each of the remaining artisan contributed.
b) Calculate how many artisan made the contribution.
c) Calculate how much each contributed.
Date posted:
May 7, 2019
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Answers (1)
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Mr. Korir borrowed Kshs 3,600,000 from the bank to buy a residential house. He was required to repay the loan with a
simple interest for a...
(Solved)
Mr. Korir borrowed Kshs 3,600,000 from the bank to buy a residential house. He was required to repay the loan with a
simple interest for a period of four years. The repayment amounted to kshs 111 000 per month. Calculate
a) i) the interest paid to the bank.
ii) the rate per annum of the simple interest.
b) The value of the house appreciated at the rate of 15% per annum. Calculate the value of the house after 4 years to the nearest hundreds.
c) After n years, the value of the house was Kshs 8,327,019. Find the value of n.
Date posted:
May 7, 2019
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Answers (1)
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A farmer has 200m of fencing with which to form three sides of a rectangular enclosure, the fourth side being existing
wall of the yard. Find...
(Solved)
A farmer has 200m of fencing with which to form three sides of a rectangular enclosure, the fourth side being existing
wall of the yard. Find in metres the dimension of the largest possible area that can be enclosed.
Date posted:
May 7, 2019
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Answers (1)
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A (-6,-2) and B (2,-4) are the end point of a diameter of a circle.
(Solved)
A (-6,-2) and B (2,-4) are the end point of a diameter of a circle.
a)Find the co-ordinates of the centre of the circle
b)Find the equation of the circle expressing it in the form 𝑥2 + 𝑦2 + 𝑎𝑥 + 𝑏𝑦 + 𝑐 = 0, 𝑤ℎ𝑒𝑟𝑒 𝑎, 𝑏 𝑎𝑛𝑑 𝑐 𝑎𝑟𝑒 intergers.
Date posted:
May 7, 2019
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Answers (1)
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Two matrices A and B are as given below,Given that the product AB is a singular matrix, find the value of P.
(Solved)
Two matrices A and B are as given below,Given that the product AB is a singular matrix, find the value of P.
Date posted:
May 7, 2019
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Answers (1)
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Find the maximum value and correct to three decimal places of:
(Solved)
Given that 10.5 <_ x <_ 20 and 1.5 <_ y <_ 3, find the maximum value and correct to three decimal places of:
Date posted:
May 7, 2019
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Answers (1)
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a) Expand (a + b)5
(Solved)
a) Expand (a + b)5
b) Use the first three terms of the expansion in (a) to find the value of (1.97)5 to two decimal places.
Date posted:
May 7, 2019
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Answers (1)
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Without using mathematical tables or a calculator evaluate.
(Solved)
Without using mathematical tables or a calculator evaluate.
Date posted:
May 7, 2019
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Answers (1)
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In the figure below AB and Bc are chords of a circle centre O. AB=6cm, BC=16cm and OC=10cm
(Solved)
In the figure below AB and Bc are chords of a circle centre O. AB=6cm, BC=16cm and OC=10cm
Calculate angle ABC correct to three significant figures.
Date posted:
May 7, 2019
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Answers (1)
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Make n the subject of the formula given that
(Solved)
Make n the subject of the formula given that
Date posted:
May 7, 2019
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Answers (1)
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Without using mathematical tables or a calculator, evaluate.
(Solved)
Without using mathematical tables or a calculator, evaluate.
Date posted:
May 7, 2019
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Answers (1)
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a) Determine the x-intercept of the curve y = x3 - 9x
(Solved)
a) Determine the x-intercept of the curve y = x3 - 9x
b) Use the trapezium rule with 6 strips to find areas bounded by the curve and the x-axis.
c) By using integration, find the exact area bounded by the curve and the x- axis.
d) Calculate the percentage error in using trapezium rule to obtain the area.
Date posted:
May 7, 2019
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Answers (1)
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a) Give the inequalities that define the unshaded region.
(Solved)
a) Give the inequalities that define the unshaded region.
b) Find the exact area of the region.
Date posted:
May 7, 2019
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Answers (1)
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The figure below is a triangle OAB, where
(Solved)
The figure below is a triangle OAB, where ⃗𝑂⃗⃗⃗𝐴⃗ =a and ⃗𝑂⃗⃗⃗𝐵⃗ =b. A point R divides AB in the ratio 1:3 ⃗𝑂⃗⃗⃗𝑅⃗ and ⃗𝐴⃗⃗⃗𝑇⃗
intersect at D.
a) Find in terms of a and b
i) BT
ii) OR
iii) AT
b) If OD=hOR and AD=kAT, express OD in two ways hence determine the values of h and k.
Date posted:
May 7, 2019
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Answers (1)
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The intersecting circles centres S and R have radii 28 and 35 respectively. A common chord AB=38cm.
(Solved)
The intersecting circles centres S and R have radii 28 and 35 respectively. A common chord AB=38cm.
a) Calculate
i) Angle ASB
ii) Angle ARB
b) Calculate the area of the shaded region.
Date posted:
May 7, 2019
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Answers (1)
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Christians who attended a church service on Sunday were grouped by age as shown in the table below.
(Solved)
Christians who attended a church service on Sunday were grouped by age as shown in the table below.
Estimate the mean age
Date posted:
May 7, 2019
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Answers (1)
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Use logarithms tables to evaluate
(Solved)
Use logarithms tables to evaluate
Date posted:
May 7, 2019
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Answers (1)
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Solve for x; if 9x x 27x - 1 = 1
(Solved)
Solve for x; if 9x x 27x - 1 = 1
Date posted:
May 7, 2019
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Answers (1)
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Simplify the following expression completely.
(Solved)
Simplify the following expression completely.
Date posted:
May 7, 2019
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Answers (1)