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- A red and black dice are rolled and the events X, Y and Z are defined as follows.
X = The red die shows a 4
Y...(Solved)
A red and black dice are rolled and the events X, Y and Z are defined as follows.
X = The red die shows a 4
Y – The sum of the scores of the two dice is 6
Z – The black die shows a 3
(a) Find the probability of event X
(b) The probability of events X and Z
(c) Which event is mutually exclusive to X
(d) Which event is independent of X
(e) The probability of event Y
Date posted: August 26, 2019. Answers (1)
- Without using mathematical tables or calculators express in surd form and simplify(Solved)
Without using mathematical tables or calculators express in surd form and simplify
Date posted: August 26, 2019. Answers (1)
- Solve for x in the equation.(Solved)
Solve for x in the equation.
Date posted: August 26, 2019. Answers (1)
- Vector OP = 6i + j and OQ = -2i + 5j. A point N divides PQ internally in the ratio 3:1. Find PN in...(Solved)
Vector OP = 6i + j and OQ = -2i + 5j. A point N divides PQ internally in the ratio 3:1. Find PN in terms
of i and j.
Date posted: August 26, 2019. Answers (1)
- A small cone of height 8 cm is cut off from a bigger cone to leave a frustum of height 16 cm. If the volume...(Solved)
A small cone of height 8 cm is cut off from a bigger cone to leave a frustum of height 16 cm. If the volume of the smaller cone is 160 cm3, find the volume of the frustum.
Date posted: August 26, 2019. Answers (1)
- The equation of a circle is given as 3x2 + 3y2– 12x + 18y + 8 = 0. Find the centre and radius of this...(Solved)
The equation of a circle is given as 3x2 + 3y2– 12x + 18y + 8 = 0. Find the centre and radius of this circle.
Date posted: August 26, 2019. Answers (1)
- The life expectancy in hours of 106 bulbs are shown in the table below.Calculate the quantile deviation of the life expectancy(Solved)
The life expectancy in hours of 106 bulbs are shown in the table below.
Calculate the quantile deviation of the life expectancy
Date posted: August 26, 2019. Answers (1)
- A salesman earns a basic salary of sh. 9,000 per month. In addition he is also paid a commission of 5% for sales above sh....(Solved)
A salesman earns a basic salary of sh. 9,000 per month. In addition he is also paid a commission of 5% for sales above sh. 15,000. In a certain month he sold goods worth sh. 120,000 at a discount of 2½%. Calculate his total earnings that month.
Date posted: August 26, 2019. Answers (1)
- Find the inverse of the matrix
Hence or otherwise solve the simultaneous equations
3x + 2y = 4
5x + 4y = 9(Solved)
Find the inverse of the matrix
Hence or otherwise solve the simultaneous equations
3x + 2y = 4
5x + 4y = 9
Date posted: August 26, 2019. Answers (1)
- Expand (1 – 2x)6 in ascending powers of x up to the term in x3(Solved)
Expand (1 – 2x)6 in ascending powers of x up to the term in x3
Date posted: August 26, 2019. Answers (1)
- Solve the inequality
and show the solution on the number line.(Solved)
Solve the inequality and show the solution on the number line.
Date posted: August 26, 2019. Answers (1)
- Given that X:Y = 1:2 and Z:Y = 2:3, Find the value of(Solved)
Given that X:Y = 1:2 and Z:Y = 2:3, Find the value of
Date posted: August 26, 2019. Answers (1)
- In the diagram below, BT is a tangent to the circle at B. AXCT and BXD are straight lines. AX = 6cm, CT = 8cm,...(Solved)
In the diagram below, BT is a tangent to the circle at B. AXCT and BXD are straight lines. AX = 6cm, CT = 8cm, BX = 4.8cm and XD = 5cm.
Find the length of BT.
Date posted: August 26, 2019. Answers (1)
- Make b the subject of the formula a =
(Solved)
Make b the subject of the formula a =
Date posted: August 26, 2019. Answers (1)
- Make r the subject of the formula.(Solved)
Make r the subject of the formula.
Date posted: August 26, 2019. Answers (1)
- A car is driven a distance of 30 km measured to the nearest Km in 20 min measured to the nearest min. Between what limit...(Solved)
A car is driven a distance of 30 km measured to the nearest Km in 20 min measured to the nearest min. Between what limit will the average speed be?
Date posted: August 26, 2019. Answers (1)
- Express in surd form.Hence rationalize the denominator(Solved)
Express in surd form.Hence rationalize the denominator
Date posted: August 26, 2019. Answers (1)
- The equation of a circle is 2x2 + 2y2 + 12x – 20y – 4 = 0. Determine the coordinates of the centre of the...(Solved)
The equation of a circle is 2x2 + 2y2 + 12x – 20y – 4 = 0. Determine the coordinates of the centre of the circle and state its radius.
Date posted: August 26, 2019. Answers (1)
- Use logarithms to evaluate(Solved)
Use logarithms to evaluate
Date posted: August 26, 2019. Answers (1)
- The first and the last terms of an AP are 2 and 59 respectively. If the sum of the series is 610, find the number...(Solved)
The first and the last terms of an AP are 2 and 59 respectively. If the sum of the series is 610, find the number of terms in the series and the common difference.
Date posted: August 26, 2019. Answers (1)