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Pregunta 1 Informe
Find the derivative of \(\sqrt[3]{(3x^{3} + 1}\) with respect to x.
Pregunta 2 Informe
| Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
| Frequency | 6 | 8 | 14 | 10 | 12 |
What is the class mark of the median class?
| Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
| Frequency | 6 | 8 | 14 | 10 | 12 |
| Cumulative Frequency | 6 | 14 | 28 | 38 | 50 |
Pregunta 3 Informe
For what values of m is \(9y^{2} + my + 4\) a perfect square?
Detalles de la respuesta
Pregunta 4 Informe
Find the distance between the points (2, 5) and (5, 9).
Pregunta 5 Informe
A particle accelerates at 12\(ms^{-2}\) and travels a distance of 250m in 6 seconds. Find the initial velocity of the particle.
Pregunta 6 Informe
Find the variance of 1, 2, 0, -3, 5, -2, 4.
Pregunta 8 Informe
If \(8^{x} ÷ (\frac{1}{4})^{y} = 1\) and \(\log_{2}(x - 2y) = 1\), find the value of (x - y).
Detalles de la respuesta
Pregunta 9 Informe
If the points (-1, t -1), (t, t - 3) and (t - 6, 3) lie on the same straight line, find the values of t.
Detalles de la respuesta
Pregunta 10 Informe
If a fair coin is tossed four times, what is the probability of obtaining at least one head?
Pregunta 11 Informe
A ball is thrown vertically upwards with a velocity of 15\(ms^{-1}\). Calculate the maximum height reached. \([g = 10ms^{-2}]\)
Pregunta 12 Informe
Evaluate \(\frac{\tan 120° + \tan 30°}{\tan 120° - \tan 60°}\)
Detalles de la respuesta
Pregunta 13 Informe
If \(\frac{1}{5^{-y}} = 25(5^{4-2y})\), find the value of y.
Pregunta 14 Informe
Given that \(x * y = \frac{x + y}{2}, x \circ y = \frac{x^{2}}{y}\) and \((3 * b) \circ 48 = \frac{1}{3}\), find b, where b > 0.
Detalles de la respuesta
Pregunta 15 Informe
Given that \(AB = \begin{pmatrix} 4 \\ 3 \end{pmatrix}\) and \(AC = \begin{pmatrix} 2 \\ -3 \end{pmatrix}\), find |BC|.
Pregunta 16 Informe
Find \(\lim\limits_{x \to 3} (\frac{x^{3} + x^{2} - 12x}{x^{2} - 9})\)
Pregunta 17 Informe
| Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
| Frequency | 6 | 8 | 14 | 10 | 12 |
In which group is the upper quartile?
Pregunta 18 Informe
In how many ways can 9 people be seated on a bench if only 3 places are available?
Pregunta 19 Informe
If \(Px^{2} + (P+1)x + P = 0\) has equal roots, find the values of P.
Pregunta 20 Informe
If \(T = \begin{pmatrix} -2 & -5 \\ 3 & 8 \end{pmatrix}\), find \(T^{-1}\), the inverse of T.
Detalles de la respuesta
Pregunta 21 Informe
Find the coefficient of \(x^3\) in the binomial expansion of \((3x + 4)^4\) in ascending powers of x.
Detalles de la respuesta
Pregunta 22 Informe
If \((x + 2)\) and \((3x - 1)\) are factors of \(6x^{3} + x^{2} - 19x + 6\), find the third factor.
Pregunta 23 Informe
A function is defined by \(h : x \to 2 - \frac{1}{2x - 3}, x \neq \frac{3}{2}\). Find \(h^{-1}(\frac{1}{2})\).
Detalles de la respuesta
Pregunta 24 Informe
Integrate \((x - \frac{1}{x})^{2}\) with respect to x.
Pregunta 25 Informe
The deviations from the mean of a set of numbers are \((k+3)^{2}, (k+7), -2, \text{k and (} k+2)^{2}\), where k is a constant. Find the value of k.
Pregunta 26 Informe
Given that \(3x + 4y + 6 = 0\) and \(4x - by + 3 = 0\) are perpendicular, find the value of b.
Detalles de la respuesta
Pregunta 27 Informe
Simplify: \((1 - \sin \theta)(1 + \sin \theta)\).
Pregunta 28 Informe
Forces 90N and 120N act in the directions 120° and 240° respectively. Find the resultant of these forces.
Detalles de la respuesta
Pregunta 29 Informe
Find the equation of a circle with centre (2, -3) and radius 2 units.
Pregunta 30 Informe
If \(\frac{x + P}{(x - 1)(x - 3)} = \frac{Q}{x - 1} + \frac{2}{x - 3}\), find the value of (P + Q).
Detalles de la respuesta
Pregunta 31 Informe
| Age in years | 10 - 14 | 15 - 19 | 20 - 24 | 25 - 29 | 30 - 34 |
| Frequency | 6 | 8 | 14 | 10 | 12 |
Find the mean of the distribution.
Detalles de la respuesta
Pregunta 32 Informe
If \(2, (k+1), 8,...\) form an exponential sequence (GP), find the values of k.
Detalles de la respuesta
Pregunta 33 Informe
A box contains 5 red and k blue balls. A ball is selected at random from the box. If the probability of selecting a blue ball is \(\frac{2}{3}\), find the value of k.
Pregunta 34 Informe
A function is defined by \(h : x \to 2 - \frac{1}{2x - 3}, x \neq \frac{3}{2}\). Find \(h^-1\), the inverse of h.
Pregunta 35 Informe
Simplify \(\frac{1 + \sqrt{8}}{3 - \sqrt{2}}\).
Pregunta 36 Informe
If \(f(x) = 3x^{3} + 8x^{2} + 6x + k\) and \(f(2) = 1\), find the value of k.
Pregunta 37 Informe
Express (14N, 240°) as a column vector.
Pregunta 38 Informe
The radius of a sphere is increasing at a rate \(3cm s^{-1}\). Find the rate of increase in the surface area, when the radius is 2cm.
Pregunta 39 Informe
Using the binomial expansion \((1+x)^{6} = 1 + 6x + 15x^{2} + 20x^{3} + 15x^{4} + 6x^{5} + x^{6}\), find, correct to 3 dp, the value of \((1.98)^{6}\).
Detalles de la respuesta
Pregunta 40 Informe
The first term of a linear sequence is 9 and the common difference is 7. If the nth term is 380, find the value of n.
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