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Swali 3 Ripoti
The probabilities that Atta and Tunde will hit a target in a shooting contest are \(\frac{1}{6}\) and \({1}{9}\) respectively. Find the probability that only one of them will hit the target.
Maelezo ya Majibu
Swali 4 Ripoti
The table shows the mark obtained by students in a test.
| Marks | 1 | 2 | 3 | 4 | 5 |
| Frequency | 2 | k | 1 | 1 | 2 |
If the mean mark is 3, find the value of k.
Maelezo ya Majibu
Swali 6 Ripoti
If\((\frac{1}{9})^{2x-1} = (\frac{1}{81})^{2-3x}\)find the value of x
Maelezo ya Majibu
Swali 8 Ripoti
If α and β are the roots of \(7x2 +12x - 4 = 0\),find the value of \(\frac{αβ}{(α + β)^2}\)
Maelezo ya Majibu
Swali 9 Ripoti
A linear transformation on the oxy plane is defined by \(P : (x, y) → (2x + y, -2y)\). Find \(P^2\)
Maelezo ya Majibu
Swali 10 Ripoti
If \(f : x → 2 tan x\) and \(g : x → √(x^2 + 8), find ( g o f )(45^o)\)
Maelezo ya Majibu
Swali 12 Ripoti
Given that \(\frac{3x + 4}{(x - 2)(x + 3)}≡\frac{P}{x + 3}+\frac{Q}{x - 2}\),find the value of Q.
Maelezo ya Majibu
Swali 13 Ripoti
Given that \(p = \begin{bmatrix} x&4\\3&7\end{bmatrix} Q =\begin{bmatrix} x&3\\1&2x\end{bmatrix}\) and the determinant of \(Q\) is three more than that of \(P\) , find the values of \(x\).
Maelezo ya Majibu
Swali 14 Ripoti
An exponential sequence (G.P.) is given by 8√2, 16√2, 32√2, ... . Find the n\(^{th}\) term of the sequence
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Swali 15 Ripoti
\(Differentiate f (x) = \frac{1}{(1 - x^2)^5}\) with respect to \(x\).
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Swali 16 Ripoti
An exponential sequence (G.P.) is given by \(\frac{9}{2},\frac{3}{4},\frac{1}{8},\)....Find its sum to infinity.
Maelezo ya Majibu
Swali 17 Ripoti
A particle began to move at \(27 ms^{-1}\) along a straight line with constant retardation of \(9 ms^{-2}\). Calculate the time it took the particle to come to a stop.
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Swali 18 Ripoti
Given that \(sin x = \frac{4}{5}\) and \(cos y = \frac{12}{13}\), where x is an obtuse angle and y is an acute angle, find the value of sin (x - y).
Maelezo ya Majibu
Swali 19 Ripoti
If \(X\) and \(Y\) are two independent events such that \(P (X) = \frac{1}{8}\) and \(P (X ⋃ Y) = \frac{5}{8}\), find \(P (Y)\).
Maelezo ya Majibu
Swali 21 Ripoti
Given that M is the midpoint of T (2, 4) and Q (-8, 6), find the length of MQ .
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Swali 22 Ripoti
Consider the statements:
x: The school bus arrived late
y: The student walked down to school
Which of the following can be represented by y ⇒ x?
Maelezo ya Majibu
Swali 23 Ripoti
Find the coefficient of the \(6^{th}term\) in the binomial expansion of \((1 - \frac{2x}{3})10\) in ascending powers of \(x\).
Maelezo ya Majibu
Swali 24 Ripoti
Find the equation of the normal to the curve y = \(3x^2 + 2\) at point (1, 5).
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Swali 26 Ripoti
If m and ( m + 4) are the roots of \(4x^2 - 4x - 15 = 0\), find the equation whose roots are 2 m and (2 m + 8).
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Swali 28 Ripoti
In how many ways can a committee of 3 women and 2 men be chosen from a group of 7 men and 5 women?
Maelezo ya Majibu
Swali 29 Ripoti
The table shows the operation * on the set {x, y, z, w}.
| * | X | Y | Z | W |
| X | Y | Z | X | W |
| Y | Z | W | Y | X |
| Z | X | Y | Z | W |
| W | W | X | W | Z |
Find the identity of the element.
Maelezo ya Majibu
Swali 30 Ripoti
Given that r = (10 N , 200º) and n = (16 N , 020º), find (3r - 2n).
Maelezo ya Majibu
Swali 31 Ripoti
If \((x - 5)\) is a factor of \(x^3 - 4x^2 - 11x + 30\), find the remaining factors.
Maelezo ya Majibu
Swali 32 Ripoti
Adu's scores in five subjects in an examination are 85, 84, 83, 86 and 87. Calculate the standard deviation.
Maelezo ya Majibu
Swali 33 Ripoti
Given that P = {x : 2 ≤ x ≤ 8} and Q = {x : 4 < x ≤ 12} are subsets of the universal set μ = {x : x ∈ R}, find (P ⋂ Q\(^1\)).
Maelezo ya Majibu
Swali 34 Ripoti
A uniform beam PQ of length 80 cm and weight 60 N rests on a support at X where | PX | = 30 cm. If the body is kept in equilibrium by a mass m kg which is placed at P , calculate the value of m
[Take g = 10 ms\(^{-2}\)]
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Swali 35 Ripoti
A function \(f\) is defined by \(f :x→\frac{x + 2}{x - 3},x ≠ 3\).Find the inverse of \(f\) .
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Swali 36 Ripoti
Calculate, correct to one decimal place, the angle between 5 i + 12 j and -2 i + 3 j
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Swali 39 Ripoti
The velocity of a body of mass 4.56 kg increases from \((10 ms^{-1}, 060^o) to (50 ms ^{-1}, 060^o)\) in 16 seconds . Calculate the magnitude of force acting on it.
Maelezo ya Majibu
Swali 40 Ripoti
The distance S metres moved by a body in t seconds is given by \(S = 5t^3 - \frac{19}{2} t^2 + 6t - 4\). Calculate the acceleration of the body after 2 seconds
Maelezo ya Majibu
Je, ungependa kuendelea na hatua hii?