- Maina can do a piece of work in 12 hours. Muthui can do it in 20 hours. How long would it take Muthui to complete...(Solved)
Maina can do a piece of work in 12 hours. Muthui can do it in 20 hours. How long would it take Muthui to complete the work if Maina has been working for 7 hours.
Date posted: May 6, 2019. Answers (1)
- A particle moving in a straight line has its displacement x metres from the origin O at time t seconds defined by the
equation x =...(Solved)
A particle moving in a straight line has its displacement x metres from the origin O at time t seconds defined by the
equation x = t3 - 6t2 + 7. Determine the values of t for which the particle is momentarily at rest.
Date posted: May 6, 2019. Answers (1)
- A point A (-1, 3) is mapped onto A1(8, 12). Fidn the centre of enlargement given that the scale factor is 2.(Solved)
A point A (-1, 3) is mapped onto A1(8, 12). Fidn the centre of enlargement given that the scale factor is 2.
Date posted: May 6, 2019. Answers (1)
- A major arc of a circle substends an angle of 2500 at the centre of a circle. If the radius of the circle is 9.8cm...(Solved)
A major arc of a circle substends an angle of 2500 at the centre of a circle. If the radius of the circle is 9.8cm find the area of the minor sector. (Use 𝜋 = 22/7)
Date posted: May 6, 2019. Answers (1)
- Solve 15 < 5 (3 - x) = 30 hence show your solution on a number line.(Solved)
Solve 15 < 5 (3 - x) ≤ 30 hence show your solution on a number line.
Date posted: May 6, 2019. Answers (1)
- Find the values of x for which A has no inverse.(Solved)
Find the values of x for which A has no inverse.
Date posted: May 6, 2019. Answers (1)
- Construct a DABC in which BC = 5cm, 0 and 0. From A drop a perpendicular to BC and measure its
length to the nearest mm.(Solved)
Construct a triangle ABC in which BC = 5cm, 0 and 0. From A drop a perpendicular to BC and measure its length to the nearest mm.
Date posted: May 6, 2019. Answers (1)
- The mass of a cylindrical metal rod of radius 14cm and height 10cm is 5.47kg. Find it’s density in g/cm3 to 2 decimal places.(Solved)
The mass of a cylindrical metal rod of radius 14cm and height 10cm is 5.47kg. Find it’s density in g/cm3 to 2 decimal places.
Date posted: May 6, 2019. Answers (1)
- Eight years ago the age of a father was six times the age of his son and after eight years from today the age of...(Solved)
Eight years ago the age of a father was six times the age of his son and after eight years from today the age of the
father would be only twice the age of his son. Find their present ages.
Date posted: May 6, 2019. Answers (1)
- Given that a = 5i + 2j and h = 3i + 4j evaluate |7?? - 5h|(Solved)
Given that a = 5i + 2j and h = 3i + 4j evaluate |7𝑎 − 5ℎ|
Date posted: May 6, 2019. Answers (1)
- Simplify the expression(Solved)
Simplify the expression
Date posted: May 6, 2019. Answers (1)
- The sum of interior angles of a regular polygon is 32400. Find the size of each exterior angle.(Solved)
The sum of interior angles of a regular polygon is 32400. Find the size of each exterior angle.
Date posted: May 6, 2019. Answers (1)
- Two boats P and Q are located 45km apart, P being due north of Q. An observer at P spots a ship whose bearing he
finds...(Solved)
Two boats P and Q are located 45km apart, P being due north of Q. An observer at P spots a ship whose bearing he
finds as S560. From Q the bearing of the same ship is N380E. Calculate the distance of the ship from Q to 2 decimal places.
Date posted: May 6, 2019. Answers (1)
- Simplify the expression.(Solved)
Simplify the expression.
Date posted: May 6, 2019. Answers (1)
- Use the prime factors of 1936 and 1728 to evaluate.(Solved)
Use the prime factors of 1936 and 1728 to evaluate.
Date posted: May 6, 2019. Answers (1)
- A square of side (x + 2) cm has the same area as a rectangle measuring (2x + 4) cm and (x - 2) cm....(Solved)
A square of side (x + 2) cm has the same area as a rectangle measuring (2x + 4) cm and (x - 2) cm. Calculate the area
of the rectangle.
Date posted: May 6, 2019. Answers (1)
- The positions of three ports in the Indian Ocean are p (400N, 300W) Q(400N, 200E) and R (360S,300W) respectively.(Solved)
The positions of three ports in the Indian Ocean are p (400N, 300W) Q(400N, 200E) and R (360S,300W) respectively.
(a) Find the distance in nautical miles to the nearest nm between:
(i) Ports p and Q
(ii) Ports P and R
(b) A ship left port P on Tuesday 1430 hours and sailed to port Q at 20 knots.
Calculate:
(i) The local time at port Q when the ship left port P
(ii) The day and time the ship arrived at port Q
Date posted: May 6, 2019. Answers (1)
- The table below gives marks scored by candidates in a mathematics test.(Solved)
The table below gives marks scored by candidates in a mathematics test.
(a) Using an assumed mean of 25.5, calculate the mean mark.
(b) Estimate the median mark.
(c) Calculate the standard deviation of the marks
Date posted: May 6, 2019. Answers (1)
- Given the series 3 + 9 + 15 + 21 + 27 + ……………………………….. find the number of the terms that will given a sum...(Solved)
Given the series 3 + 9 + 15 + 21 + 27 + ……………………………….. find the number of the terms that will given a sum of 432
Date posted: May 6, 2019. Answers (1)
- The eleventh term of an arithmetic progression is four times its second term. The sum of the first seven terms of
the same progression is 175.Find...(Solved)
The eleventh term of an arithmetic progression is four times its second term. The sum of the first seven terms of
the same progression is 175.Find the first term and the common difference of the progression
Date posted: May 6, 2019. Answers (1)