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A regular polygon with 3x sides has interior angle 400 greater than the one with x sides. What is x?
(Solved)
A regular polygon with 3x sides has interior angle 400 greater than the one with x sides. What is x?
Date posted:
May 7, 2019
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Answers (1)
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The image of P(0,2) under an enlargement with the factor 3 is P1(4,6). Find the centre of enlargement.
(Solved)
The image of P(0,2) under an enlargement with the factor 3 is P1(4,6). Find the centre of enlargement.
Date posted:
May 7, 2019
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Answers (1)
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The angle subtended by the major arc at the centre of the circle O is twice the angle subtended by the minor arc at the
centre....
(Solved)
The angle subtended by the major arc at the centre of the circle O is twice the angle subtended by the minor arc at the
centre. If the radius of the circle is 3.5cm, find the length of the minor arc. (Take 𝜋 =22/7)
Date posted:
May 7, 2019
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Answers (1)
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PQRS is a cyclic quadrilateral and O is the centre of the circle. angle QOS = 1500
(Solved)
PQRS is a cyclic quadrilateral and O is the centre of the circle. angle QOS = 1500
While giving reasons find:
(a) angle QPS
(b) angle QRS
Date posted:
May 7, 2019
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Answers (1)
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A test is conducted for the purpose of employing a suitable typist with the following results.
(Solved)
A test is conducted for the purpose of employing a suitable typist with the following results.
Calculate the mean typing speed.
Date posted:
May 7, 2019
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Answers (1)
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Find the equation of the normal to the curve y = x2 + 3x at the point P where x = 1.
(Solved)
Find the equation of the normal to the curve y = x2 + 3x at the point P where x = 1.
Date posted:
May 7, 2019
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Answers (1)
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A mobile phone seller gets a commission of Shs. 250 on every mobile phone that he sells. In a given month, he got
33,000 shillings.
(Solved)
A mobile phone seller gets a commission of Shs. 250 on every mobile phone that he sells. In a given month, he got
33,000 shillings.
(a) How many phones did he sell that month.
(b) If this commission is 2%. What is the sale price of each mobile phone?
Date posted:
May 7, 2019
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Answers (1)
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Simplify completely:
(Solved)
Simplify completely:
Date posted:
May 7, 2019
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Answers (1)
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Using a ruler and a pair of compasses only, construct a trapezium ABCD with AB parallel to DC. AB = 10cm, BC = 5cm,
CD =...
(Solved)
Using a ruler and a pair of compasses only, construct a trapezium ABCD with AB parallel to DC. AB = 10cm, BC = 5cm,
CD = 4cm and angle ABC = 450. Drop a perpendicular from C to meet AB to O. Measure AD and the altitude of the
trapezium.
Date posted:
May 7, 2019
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Answers (1)
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Points A(2,7) and B(-4,3) are points on a straight line. Find the equation of the perpendicular bisector of the line AB.
(Solved)
Points A(2,7) and B(-4,3) are points on a straight line. Find the equation of the perpendicular bisector of the line AB.
Date posted:
May 7, 2019
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Answers (1)
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Use reciprocal and square tables to evaluate to 4 significant figures the expression:
(Solved)
Use reciprocal and square tables to evaluate to 4 significant figures the expression:
Date posted:
May 7, 2019
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Answers (1)
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Without using mathematical tables or calculators evaluate:
(Solved)
Without using mathematical tables or calculators evaluate:
Date posted:
May 7, 2019
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Answers (1)
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a) Complete the table below for the equation y = 2x3 + 5x3 - x - 6
(Solved)
a) Complete the table below for the equation 𝑦 = 2𝑥3 + 5𝑥3 − 𝑥 − 6
b) On the grid provided draw the graph 𝑦 = 2𝑥2 + 5𝑥2 − 𝑥 − 6 𝑓𝑜𝑟 − 3.5 ≤ 𝑥 ≤ 2. Use 2cm to represent 1 unit
on the x-axis and 1cm to represent 5 units on the y-axis.
c) By drawing a suitable line use the graph in (b) to solve the equation.2𝑥3 + 5𝑥2 − 3𝑥 − 4 = 0
Date posted:
May 7, 2019
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Answers (1)
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a) Copy and complete the given table below to 2 decimal places.
(Solved)
a) Copy and complete the given table below to 2 decimal places.
b) Using the same axes plot the curves y=Sin(x+300) and y=Cos (x-15)
Taking 1 cm represented 300 and x-axis and 1cm represented 0.25cm on the y axis.
c) Using the graph state the amplitude of y=Cos (x-150)
d) Using the graph solve the equation: Sin (x+300)-Cos (x-150)=0
Date posted:
May 7, 2019
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Answers (1)
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A ship leaves an Island A (600N, 45 0E) and sails due west for 120hours to another island B.The average speed of the ship is...
(Solved)
A ship leaves an Island A (600N, 45 0E) and sails due west for 120hours to another island B.The average speed of the ship is 27 knots.
a) Find the position of the island B
b) Another island C is south of island B and lies on latitude 550N. Find the distance between Islands B and C in
nautical miles.
c) The ship leaves island B when the time at Island A is 12.30pm. On Monday and sailed to Island C. If the ship
increases its speed by 20% between B and C find out the time of arrival at island C to the nearest minutes and the
day.
Date posted:
May 7, 2019
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Answers (1)
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a) Using a ruler and pair of compasses only construct a square ABCD of sides 6cm.
(Solved)
a) Using a ruler and pair of compasses only construct a square ABCD of sides 6cm.
b) A point P moves inside the square such that;
i) 𝐴𝑃 ≤ 𝑃𝐵
ii) 𝐴𝑛𝑔𝑙𝑒 𝐴𝑃𝐵 ≥ 900
iii) P is nearer to AD than AB. construction on the square in (a) show the region that P must lie by shading.
c) Find the area of the region where P must lie.
Date posted:
May 7, 2019
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Answers (1)
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The figure below shows a frustrum ABCDEFGH of a right pyramid where AB=40cm, BC=30cm, FG=20cm, GH=15cm and AF=BG=CH=DE=25cm.
(Solved)
The figure below shows a frustrum ABCDEFGH of a right pyramid where AB=40cm, BC=30cm, FG=20cm, GH=15cm and AF=BG=CH=DE=25cm.
Find the vertical height of the frustrum.
a) Find the angle between line BE and the base ABCD
b) Find the angle between the plane BCHG and the base ABCD.
c) Find the angle between the plane ADEF and the plane AGHD
Date posted:
May 7, 2019
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Answers (1)
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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)