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Pergunta 1 Relatório
Three students are working independently on a Mathematics problem. Their respective probabilities of solving the problem are 0.6, 0.7 and 0.8. What is the probability that at least one of them solves the problem?
Pergunta 2 Relatório
The polynomial \(2x^{3} + 3x^{2} + qx - 1\) has the same reminder when divided by \((x + 2)\) and \((x - 1)\). Find the value of the constant q.
Detalhes da Resposta
Pergunta 3 Relatório
Find the area of the circle whose equation is given as \(x^{2} + y^{2} - 4x + 8y + 11 = 0\).
Pergunta 4 Relatório
Given that \(R = (4, 180°)\) and \(S = (3, 300°)\), find the dot product.
Detalhes da Resposta
Pergunta 6 Relatório
The tangent to the curve \(y = 4x^{3} + kx^{2} - 6x + 4\) at the point P(1, m) is parallel to the x- axis, where k and m are constants. Find the value of k.
Detalhes da Resposta
Pergunta 7 Relatório
Three forces \(F_{1} = (8 N, 300°), F_{2} = (6 N, 090°)\) and \(F_{3} = (4 N, 180°)\) act on a particle. Find the vertical component of the resultant force.
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Pergunta 8 Relatório
The gradient of the line passing through the points P(4, 5) and Q(x, 9) is \(\frac{1}{2}\). Find the value of x.
Detalhes da Resposta
Pergunta 9 Relatório
Find the fourth term of the binomial expansion of \((x - k)^{5}\) in descending powers of x.
Detalhes da Resposta
Pergunta 10 Relatório
Two vectors m and n are defined by \(m = 3i + 4j\) and \(n = 2i - j\). Find the angle between m and n.
Detalhes da Resposta
Pergunta 11 Relatório
The equation of a circle is given by \(x^{2} + y^{2} - 4x - 2y - 3\). Find the radius and the coordinates of its centre.
Pergunta 12 Relatório
A group of 5 boys and 4 girls is to be chosen from a class of 8 boys and 6 girls. In how many ways can this be done?
Pergunta 13 Relatório
Two functions f and g are defined on the set R of real numbers by \(f : x \to 2x - 1\) and \(g : x \to x^{2} + 1\). Find the value of \(f^{-1} \circ g(3)\).
Pergunta 14 Relatório
If \(f(x) = mx^{2} - 6x - 3\) and \(f'(1) = 12\), find the value of the constant m.
Pergunta 15 Relatório
A particle is projected vertically upwards with a speed of 40 m/s. At what times will it be 35m above its point of projection? \(\text{Take g} = 10 ms^{-2}\)
Detalhes da Resposta
Pergunta 16 Relatório
The sum of the first three terms of an Arithmetic Progression (A.P) is 18. If the first term is 4, find their product.
Pergunta 17 Relatório
The tangent to the curve \(y = 4x^{3} + kx^{2} - 6x + 4\) at the point P(1, m) is parallel to the x- axis, where k and m are constants. Determine the coordinates of P.
Detalhes da Resposta
Pergunta 18 Relatório
A body is acted upon by two forces \(F_{1} = (5 N, 060°)\) and \(F_{2} = (10 N, 180°)\). Find the magnitude of the resultant force.
Pergunta 19 Relatório
| Marks | 5 - 7 | 8 - 10 | 11 - 13 | 14 - 16 | 17 - 19 | 20 - 22 |
| Frequency | 4 | 7 | 26 | 41 | 14 | 8 |
The table above shows the marks obtained by 100 pupils in a test. Find the upper class boundary of the class containing the third quartile.
Detalhes da Resposta
Pergunta 20 Relatório
Calculate in surd form, the value of \(\tan 15°\).
Pergunta 21 Relatório
Which of the following is the same as \(\sin (270 + x)°\)?
Pergunta 22 Relatório
How many ways can 12 people be divided into three groups of 2, 7 and 3 in that order?
Pergunta 23 Relatório
Evaluate \(\lim \limits_{x \to 3} \frac{x^{2} - 2x - 3}{x - 3}\)
Pergunta 24 Relatório
Simplify \(\frac{\tan 80° - \tan 20°}{1 + \tan 80° \tan 20°}\)
Pergunta 25 Relatório
Find the value of p for which \(x^{2} - x + p\) becomes a perfect square.
Pergunta 26 Relatório
Simplify \(\frac{\sqrt{3}}{\sqrt{3} - 1} + \frac{\sqrt{3}}{\sqrt{3} +1}\)
Detalhes da Resposta
Pergunta 27 Relatório
The binary operation * is defined on the set of R, of real numbers by \(x * y = 3x + 3y - xy, \forall x, y \in R\). Determine, in terms of x, the identity element of the operation.
Pergunta 28 Relatório
Given that \(\alpha\) and \(\beta\) are the roots of an equation such that \(\alpha + \beta = 3\) and \(\alpha \beta = 2\), find the equation.
Pergunta 29 Relatório
Given that the straight lines \(kx - 5y + 6 = 0\) and \(mx + ny - 1 = 0\) are parallel, find a relationship connecting the constants m, n and k.
Pergunta 30 Relatório
The equation of a curve is given by \(y = 2x^{2} - 5x + k\). If the curve has two intercepts on the x- axis, find the value(s) of constant k.
Pergunta 31 Relatório
Given that \(\log_{2} y^{\frac{1}{2}} = \log_{5} 125\), find the value of y.
Pergunta 32 Relatório
Given that \(p = 4i + 3j\), find the unit vector in the direction of p.
Detalhes da Resposta
Pergunta 33 Relatório
X and Y are two independent event. If \(P(X) = \frac{1}{5}\) and \(P(X \cap Y) = \frac{2}{15}\), find \(P(Y)\).
Pergunta 34 Relatório
Two bodies of masses 8 kg and 5 kg travelling in the same direction with speeds x m/s and 2 m/s respectively collide. If after collision, they move together with a speed of 3.85 m/s, find, correct to the nearest whole number, the value of x.
Detalhes da Resposta
Pergunta 35 Relatório
| Marks | 5 - 7 | 8 - 10 | 11 - 13 | 14 - 16 | 17 - 19 | 20 - 22 |
| Frequency | 4 | 7 | 26 | 41 | 14 | 8 |
The table above shows the marks obtained by 100 pupils in a test. Find the probability that a student picked at random scored at least 14 marks.
Pergunta 36 Relatório
A bag contains 2 red and 4 green sweets of the same size and shape. Two boys pick a sweet each from the box, one after the other, without replacement. What is the probability that at least a sweet with green wrapper is picked?
Detalhes da Resposta
Pergunta 37 Relatório
Given that \(P = \begin{pmatrix} 4 & 9 \end{pmatrix}\) and \(Q = \begin{pmatrix} -1 & -2 \\ 3 & 2 \end{pmatrix}\). Evaluate \(|Q|P\).
Pergunta 38 Relatório
A force of 30 N acts at an angle of 60° on a body of mass 6 kg initially at rest on a smooth horizontal plane. Find the distance covered in 10 seconds.
Pergunta 39 Relatório
Given that \(P = \begin{pmatrix} 4 & 9 \end{pmatrix}\) and \(Q = \begin{pmatrix} -1 & -2 \\ 3 & 2 \end{pmatrix}\). Which of the following operations is possible?
Detalhes da Resposta
Pergunta 40 Relatório
Calculate, correct to one decimal place, the standard deviation of the numbers: -1, 5, 0, 2 and 9.
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