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Given the expression 9.7 ÷ 3.7, find to four significant figures the percentage error in its quotient.
(Solved)
Given the expression 9.7 ÷ 3.7, find to four significant figures the percentage error in its quotient.
Date posted:
September 24, 2019
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Answers (1)
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Evaluate using logarithms.
(Solved)
Evaluate using logarithms.
Date posted:
September 24, 2019
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Answers (1)
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The relation between two variables P and V is believed to be of the form where A and B are constants.
(a)...
(Solved)
The relation between two variables P and V is believed to be of the form 
where A and B are constants.
(a) Draw a suitable line graph and use it to determine the value of A and B
(b) Estimate the value of P when the value of V is 5.
Date posted:
September 24, 2019
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Answers (1)
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The manager of Hilton hotel has enough funds to buy at most 100 crates of soft drinks of type A and type B. He wishes...
(Solved)
The manager of Hilton hotel has enough funds to buy at most 100 crates of soft drinks of type A and type B. He wishes to buy more than twice as many crates of type A as type B. He wants to buy a maximum of 80 crates of type A and at least 10 crates of type B. Letting x represent the number of crates of type A and y the number of crates of type B;
(a) Write down all the inequalities which represent the above information.
(b) Represent the inequalities in (a) above on the graph provided.
The profit from the sale of a crate of type A is kshs. 60, while that of type B is kshs. 40. Find the number of crates he should buy to maximize his profit.
(c) Find the profit.
Date posted:
September 24, 2019
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Answers (1)
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a)Using trapezium rule estimate the area enclosed by the curve y = -x2, the x-axis and the lines x = 5 and x = 2,...
(Solved)
a)Using trapezium rule estimate the area enclosed by the curve y = -x2, the x-axis and the lines x = 5 and x = 2, using 7 ordinates.
(b) Find the exact area.
(c) Find the percentage error in using trapezium rule.
(d) Estimate the area using mid-ordinate rule with six strips
Date posted:
September 24, 2019
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Answers (1)
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It has been established that the probability of Pangani and Moi Girls teams scoring 0,1,2 and 3 goals against each other are shown in the...
(Solved)
It has been established that the probability of Pangani and Moi Girls teams scoring 0,1,2 and 3 goals against each other are shown in the table below
(a)Use a probability space to show all the possible outcomes.
(b)Calculate the probability of
(i)Pangani winning
(ii)A draw
(iii)Moi Girls scoring at least three goals.
Date posted:
September 24, 2019
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Answers (1)
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Mrs. Muta earns K£ 12000 p.a. and is housed by the employer at a nominal rent of shs. 1200 p.m. She is entitled to a...
(Solved)
Mrs. Muta earns K£ 12000 p.a. and is housed by the employer at a nominal rent of shs. 1200 p.m. She is entitled to a personal relief of K£ 1320 p.a. and a premium relief of 10% on her insuarance premium of K£ 800 p.a. or a maximum of shs. 200 p.m. The housing benefit is 15% of the salary.
Calculate;
(a)Net tax p.a.
(b)Other deductions include;
W.C.P.S shs. 600 p.m.
NHIF shs. 500 p.m.
Calculate her net pay per month.
Date posted:
September 24, 2019
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Answers (1)
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If find the possible values of x which satisfy the matrix product.
(Solved)
If 
find the possible values of x which satisfy the matrix product.
Date posted:
September 24, 2019
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Answers (1)
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Two brands of coffee Arabica and Robusta cost shs. 4700 and shs. 4200 per kilogram respectively, are mixed to produce a blend that costs shs....
(Solved)
Two brands of coffee Arabica and Robusta cost shs. 4700 and shs. 4200 per kilogram respectively, are mixed to produce a blend that costs shs. 4600 per kilogram. Find the ratio of the mixture.
Date posted:
September 24, 2019
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Answers (1)
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Under a transformation represented by a matrix a triangle of area 10 cm2 is mapped on to a triangle whose area is 110 cm2....
(Solved)
Under a transformation represented by a matrix 
a triangle of area 10 cm2 is mapped on to a triangle whose area is 110 cm2. Find x.
Date posted:
September 24, 2019
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Answers (1)
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Determine the amplitude, period and phase angle of the curve y = 5Sin(3x – 120)0
(Solved)
Determine the amplitude, period and phase angle of the curve y = 5Sin(3x – 120)0
Date posted:
September 24, 2019
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Answers (1)
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The position vector OA = - 3a i + b j, OB = 6a i + 4b j and OC = 15a i + 7b...
(Solved)
The position vector OA = - 3a i + b j, OB = 6a i + 4b j and OC = 15a i + 7b j, where a and b are scalars. Find in column form;
(i) AB
(ii) AC
Hence show that A,B and C are collinear.
Date posted:
September 24, 2019
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Answers (1)
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Determine the two possible values of a which
(Solved)
Determine the two possible values of a which
Date posted:
September 24, 2019
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Answers (1)
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Given Log m = x and log n = y, find x and y if Log m2 n = 4 and Log mn3 = 7
(Solved)
Given Log m = x and log n = y, find x and y if Log m2 n = 4 and Log mn3 = 7
Date posted:
September 24, 2019
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Answers (1)
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The figure below shows the graph of Log P against Log Q.
Given that P = aQn , find the value of a and n
(Solved)
The figure below shows the graph of Log P against Log Q.
Given that P = aQn , find the value of a and n
Date posted:
September 24, 2019
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Answers (1)
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Simplify;
(Solved)
Simplify; 
Date posted:
September 24, 2019
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Answers (1)
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In the figure below O is the centre of the circle and ABCDEA is a regular polygon inscribed in a circle. Line GEF is a...
(Solved)
In the figure below O is the centre of the circle and ABCDEA is a regular polygon inscribed in a circle. Line GEF is a tangent to the circle at point E
a.Find angle
i.AEG
ii. OEC
iii. DFE
iv. Obtuse angle AOC
b.If the sides of the pentagon are 6cm find the area of the circle giving your answer to one decimal place
Date posted:
September 24, 2019
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Answers (1)
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A particle is moving with an acceleration of (t – 4) m/s2 where t is time in seconds. When t is 2 seconds the velocity...
(Solved)
A particle is moving with an acceleration of (t – 4) m/s2 where t is time in seconds. When t is 2 seconds the velocity is 4m/s and when t is 0 the displacement is 0m
a.Express velocity in terms of t
b.Find the displacement of the particle during the third second.
c.Calculate the interval of time when the velocity was not more than 4m/s
d.Calculate the minimum velocity.
Date posted:
September 24, 2019
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Answers (1)
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The table below shows the rate at which income tax was charged for all income earned in the year 2012
a.A tax of ksh1200 was deducted...
(Solved)
The table below shows the rate at which income tax was charged for all income earned in the year 2012
a.A tax of ksh1200 was deducted from Mr. Rono’s monthly salary. He was entitled to a personal relief of ksh 1064 per month. Calculate his monthly
i.Gross tax in k£.
ii.Taxable income in ksh
b.He was entitled to a house allowance of ksh 3000 and medical allowances of ksh 2000 calculate his monthly basic salary in ksh.
c.Every month the following deductions were made from his salary electricity bill of sh 680, water bill of sh 460, co-operative shares of sh1250 and loan repayment of sh 2000 calculate his net salary in ksh.
Date posted:
September 24, 2019
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Answers (1)
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At the Kenya medical research institute a new drug is being tried. A sample of eighty sick rats is being used. Sixty of these rats...
(Solved)
At the Kenya medical research institute a new drug is being tried. A sample of eighty sick rats is being used. Sixty of these rats are given drugs and the rest are not. A half of those given drugs are put on a high calorie diet while three quarters of those who are not given drugs were put on the same diet. For the ones who are treated and put on a high calorie diet the probability of dying is 0.1 and 0.2 if not put on a high calorie diet. For the ones who are not treated and put on a high calorie diet the probability of dying is 0.4 and 0.6 if not put on a high calorie diet.
a.Draw a tree diagram to represent the above information.
b.Calculate the probability that a rat picked at random
i.Is given drugs, put on a high calorie diet and will die
ii.Is given drugs and will die .
iii.Will die
iv.Is not given drugs and will not die
Date posted:
September 24, 2019
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Answers (1)