Time ended 9.20 a.m
-Time started8.40 a.m
40 min
Borrow one hour from the 9 and
add to 20 min before take away.
The test was 40 minutes long
johnmulu answered the question on March 10, 2017 at 04:51
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A metal P is an alloy of two metals Q and R. Metal Q has a mass of 70 g and a density of 16 g/cm3. Metal R has a mass of 19 g and a density of 4 g/cm3. Find the density of the alloy
(Solved)
A metal P is an alloy of two metals Q and R. Metal Q has a mass of 70 g and a density of 16 g/cm3. Metal R has a mass of 19 g and a density of 4 g/cm3. Find the density of the alloy.
Date posted:
March 10, 2017
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Answers (1)
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A liquid has a mass of 6 200 kg and a density of 760 kg/m3. Find its volume.
(Solved)
A liquid has a mass of 6 200 kg and a density of 760 kg/m3. Find its volume.
Date posted:
March 10, 2017
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Answers (1)
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Cheserem, Otieno and Kariuki divided 500 eggs among themselves in the ratio 14:5:6 respectively. Later, Cheserem gave 20 eggs to Otieno and 20 eggs to Kariuki. Find the ratio of eggs that they finally got
(Solved)
Cheserem, Otieno and Kariuki divided 500 eggs among themselves in the ratio 14:5:6 respectively. Later, Cheserem gave 20 eggs to Otieno and 20 eggs to Kariuki. Find the ratio of eggs that they finally got
Date posted:
March 10, 2017
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Answers (1)
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Simplify:
$\frac{(6a + b)(a+ b) - 7b(a + b)}{2a^2 - 2b^2}$
(Solved)
Simplify:
$\frac{(6a + b)(a+ b) - 7b(a + b)}{2a^2 - 2b^2}$
Date posted:
March 9, 2017
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Answers (1)
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Simplify: (4x + 3y + 3z) - (z - 4y + 2x)
(Solved)
Simplify:
a) (4x + 3y + 3z) - (z - 4y + 2x)
b) $\frac{3(x^2 - 9)}{x + 3}$
Date posted:
March 9, 2017
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Answers (1)
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Use reciprocal and square tables to evaluate to 4 significant figures the expression
$\frac{1}{24.56}$ + 4.3622
(Solved)
Use reciprocal and square tables to evaluate to 4 significant figures the expression
$\frac{1}{24.56}$ + 4.3622
Date posted:
March 9, 2017
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Answers (1)
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Kamau spend $\frac{3}{5}$ of his money on buying food and $\frac{1}{2}$ of what was left on rent. After that, he finds that he has sh 1 400 left in his pocket. Determine the amount spent on buying food.
(Solved)
Kamau spend $\frac{3}{5}$ of his money on buying food and $\frac{1}{2}$ of what was left on rent. After that, he finds that he has sh 1 400 left in his pocket. Determine the amount spent on buying food.
Date posted:
March 9, 2017
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Answers (1)
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Evaluate $\frac{-45\div (-15\times 4 - (-38))}{-50\times 50\div 5\times (-5)}$
(Solved)
Evaluate $\frac{-45\div (-15\times 4 - (-38))}{-50\times 50\div 5\times (-5)}$
Date posted:
March 9, 2017
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Answers (1)
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Express the numbers 20, 40 and 80 each as a product of its prime factors. Hence find the L.C.M of the numbers in factor form
(Solved)
Express the numbers 20, 40 and 80 each as a product of its prime factors. Hence find the L.C.M of the numbers in factor form
Date posted:
March 9, 2017
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Answers (1)
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Write twenty million, four hundred and thirty one thousand, four hundred and one symbols.
(Solved)
Write twenty million, four hundred and thirty one thousand, four hundred and one symbols.
Date posted:
March 9, 2017
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Answers (1)
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The positions of two towns X and Y are given to the nearest degree as X(45oN, 10oW) and Y(45oN, 70oW). Find
(Solved)
The positions of two towns X and Y are given to the nearest degree as X(45oN, 10oW) and Y(45oN, 70oW). Find
a) The difference in longitude
b) The distance between the towns in
ii) Nautical miles (1nm = 1.85 km and R = 6370 km)
ii) the local time at Y is 2.00 p.m
Date posted:
March 8, 2017
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Answers (1)
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Simplify: $\frac{3a^2\;-48}{48\;-24a + 3a^2}$
(Solved)
Simplify: $\frac{3a^2\;-48}{48\;-24a + 3a^2}$
Date posted:
March 8, 2017
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Answers (1)
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Two points P and Q lies on latitude 65 2S. Their longitudes are 96 2E and 84 2W respectively. Find the distance between them in km. Take R = 6370 km and $\pi = 3.142$
(Solved)
Two points P and Q lies on latitude 65 2S. Their longitudes are 96 2E and 84 2W respectively. Find the distance between them in km. Take R = 6370 km and $\pi = 3.142$
Date posted:
March 8, 2017
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Answers (1)
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Calculate the area enclosed between the curve y = 6x - x2 x –axis and the lines x = 1 and x = 5 using...
(Solved)
Calculate the area enclosed between the curve y = 6x - x2 x –axis and the lines x = 1 and x = 5 using the mid-ordinate rule with four strips
Date posted:
March 8, 2017
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Answers (1)
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Calculate the area enclosed between the curve y = 6x - x2, x - axis and the lines x = 1 and x = 5 using the mid-ordinate rule with four strips
(Solved)
Calculate the area enclosed between the curve y = 6x - x2, x - axis and the lines x = 1 and x = 5 using the mid-ordinate rule with four strips
Date posted:
March 8, 2017
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Answers (1)
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Intersection point of the lines of equations 2x – 3y = -29 and circle whose radius is 5 units. Find the equation of the circle
(Solved)
Intersection point of the lines of equations 2x – 3y = -29 and circle whose radius is 5 units. Find the equation of the circle
Date posted:
March 8, 2017
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Answers (1)
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A ship leaves an island (5o, 45oE) and sails due east for 120 hours to another island. The average speed of the ship is 27 knots
(Solved)
A ship leaves an island (5o, 45oE) and sails due east for 120 hours to another island. The average speed of the ship is 27 knots
a) Calculate the distance between the two islands
i) in nautical miles
ii) in kilometres
b) Calculate the speed of the ship in kilometres per hour
c) Find the position of the second island. (Take 1 nm to be 1.853 km and the radius of the earth to be 6370 km)
Date posted:
March 8, 2017
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Answers (1)
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A stone is thrown vertically upwards such that its height is S metres above the ground after t seconds is given by s = 40t - 10t2.
Find
(Solved)
A stone is thrown vertically upwards such that its height is S metres above the ground after t seconds is given by s = 40t - 10t2.
Find
i) The height above the ground after 2 seconds
ii) The velocity after 1 second
iii) The instant at which the stone is 30 m high
Date posted:
March 8, 2017
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Answers (1)
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A solid cone of height 12 cm and radius 9 cm is recast into a solid sphere. Calculate the surface area of the sphere
(Solved)
A solid cone of height 12 cm and radius 9 cm is recast into a solid sphere. Calculate the surface area of the sphere
Date posted:
March 8, 2017
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Answers (1)
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Solve the simultaneous equations
x2 + y2 = 26
x + y = 4
(Solved)
Solve the simultaneous equations
x2 + y2 = 26
x + y = 4
Date posted:
March 8, 2017
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Answers (1)