- (a) P, Q and R are three quantities such that P varies directly as the square of Q and inversely as the square root of...(Solved)
(a) P, Q and R are three quantities such that P varies directly as the square of Q and inversely as the square root of R.
(i) Given that P = 12 when Q = 24 and R = 36, find P when Q = 27 and R = 121.
(ii) If Q increases by 10% and R decreases by 25%, find the percentage increase in P.
(b) If Q is inversely proportional to the square root of P and P = 4 when Q = 3.
Calculate the value of P when Q = 8.
Date posted: April 25, 2019. Answers (1)
- complete the table below for the functions;(Solved)
Date posted: April 25, 2019. Answers (1)
- Jane is a teacher who has been recruited to reach. She starts with an annual salary of Sh.792000. At end of every year
her salary increases...(Solved)
Jane is a teacher who has been recruited to reach. She starts with an annual salary of Sh.792000. At end of every year
her salary increases by 15% of the previous year.
(a) Find the salary she gets in her fourth year in the job.
(b) In which year will she earn Sh.1,831,944.
(c) Find the total she will have earned in ten years.
Date posted: April 25, 2019. Answers (1)
- The table below shows the height of 50 athletes in a college.(Solved)
The table below shows the height of 50 athletes in a college.
Calculate the median height of the athletes.
Date posted: April 25, 2019. Answers (1)
- In a race of 100km, John beats James by 10km and beats David by 13km. By how much will James beat David in a race
of...(Solved)
In a race of 100km, John beats James by 10km and beats David by 13km. By how much will James beat David in a race
of 120km assuming all run at constant speeds throughout?
Date posted: April 25, 2019. Answers (1)
- The G.C.D of three numbers is 30 and their L.C.M is 900. If two of the numbers are 150 and 60, what are the other
three...(Solved)
The G.C.D of three numbers is 30 and their L.C.M is 900. If two of the numbers are 150 and 60, what are the other
three possible third numbers?
Date posted: April 25, 2019. Answers (1)
- XYZ is a triangle. Draw the locus of a point M such that angle XYZ is equal to angle XMZ and Y must lie on...(Solved)
XYZ is a triangle. Draw the locus of a point M such that angle XYZ is equal to angle XMZ and Y must lie on the locus of
M.
Date posted: April 25, 2019. Answers (1)
- Three angles of a polygon are 1250, 1400 and 1600. The remaining angles are 1450 each. Calculate the sum of the interior angles of the...(Solved)
Three angles of a polygon are 1250, 1400 and 1600. The remaining angles are 1450 each. Calculate the sum of the interior angles of the polygon.
Date posted: April 25, 2019. Answers (1)
- Express in surd form and simplify by rationalizing the denominator.(Solved)
Express in surd form and simplify by rationalizing the denominator.
Date posted: April 25, 2019. Answers (1)
- Expand (1 + 2X)8 in ascending powers of X up to and including the term in X³. Hence evaluate (1.02)8.(Solved)
Expand (1 + 2X)8 in ascending powers of X up to and including the term in X³. Hence evaluate (1.02)8.
Date posted: April 25, 2019. Answers (1)
- The equation below represents an equation of a circle.(Solved)
The equation 
represents a circle. Determine the coordinates of the centre and the length of it’s diameter.
Date posted: April 25, 2019. Answers (1)
- List all the integral values of X which satisfy the inequalities.(Solved)
List all the integral values of X which satisfy the inequalities.
Date posted: April 25, 2019. Answers (1)
- The figure below shows a triangular prism. The measurements are in cm.(Solved)
The figure below shows a triangular prism. The measurements are in cm.
Draw the net of the prism and hence find the total surface area.
Date posted: April 25, 2019. Answers (1)
- A bag contains 3 red and 5 green marbles. Two marbles are picked at random from the bag one at a time without
replacement. Find the...(Solved)
A bag contains 3 red and 5 green marbles. Two marbles are picked at random from the bag one at a time without
replacement. Find the probability that two marbles picked will be of different colors.
Date posted: April 25, 2019. Answers (1)
- Use logarithms to 4 decimal places to evaluate:(Solved)
Use logarithms to 4 decimal places to evaluate:
Date posted: April 25, 2019. Answers (1)
- The height and radius of a cone are measured as 21cm and 14.0cm respectively. Taking pi = 3.142, find the percentage error in the volume...(Solved)
The height and radius of a cone are measured as 21cm and 14.0cm respectively. Taking pi = 3.142, find the percentage error in the volume of the cone.
Date posted: April 25, 2019. Answers (1)
- Simplify:(Solved)
Simplify:
Date posted: April 25, 2019. Answers (1)
- Evaluate:(Solved)
Evaluate:
Date posted: April 25, 2019. Answers (1)
- (a) Write down the first three terms of the sequence whose nth term is 5n – 2.(Solved)
(a) Write down the first three terms of the sequence whose nth term is 5n – 2.
(b) The 3rd term of a geometric sequence is 18 and the 6th term is 486. Find the 1st term and the common ratio.
(c) The first and the last term of an AP with 34 terms are 8 and -190 respectively.Find the sum of the first 34 terms.
(d) The 2nd, 4th and 7th term of an AP are the first 3 consecutive terms of a GP. Find the common ratio if the term is 2.
Date posted: April 25, 2019. Answers (1)
- The diagram below (not drawn to scale) shows the cross-section of a regular hexagonal solid metal prism length
20cm.(Solved)
The diagram below (not drawn to scale) shows the cross-section of a regular hexagonal solid metal prism length
20cm.
Calculate:
(a) the area of the shaded region.
(b) the volume of the material used to make the metal in cm³.
(c) If the density of the metal prism is 3.5g/cm³. Find its mass in kg.
Date posted: April 25, 2019. Answers (1)