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Question 1 Report
Simplify \(\frac{1}{(1-\sqrt{3})^{2}}\)
Question 2 Report
A circle with centre (4,5) passes through the y-intercept of the line 5x - 2y + 6 = 0. Find its equation.
Question 4 Report
Find the coordinates of the centre of the circle \(3x^{2}+3y^{2} - 4x + 8y -2=0\)
Answer Details
Question 5 Report
If \(\begin{pmatrix} 2 & 1 \\ 4 & 3 \end{pmatrix}\)\(\begin{pmatrix} 5 \\ 4 \end{pmatrix}\) = k\(\begin{pmatrix} 17.5 \\ 40.0 \end{pmatrix}\), find the value of k.
Question 6 Report
If \(B = \begin{pmatrix} 2 & 5 \\ 1 & 3 \end{pmatrix}\), find \(B^{-1}\).
Answer Details
Question 7 Report
Given that a = 5i + 4j and b = 3i + 7j, evaluate (3a - 8b).
Question 8 Report
Find the 21st term of the Arithmetic Progression (A.P.): -4, -1.5, 1, 3.5,...
Question 9 Report
A fair die is tossed twice. What is its smple size?
Question 10 Report
Differentiate \(\frac{5x^{3} + x^{2}}{x}, x\neq 0\) with respect to x.
Answer Details
Question 11 Report
A force (10i + 4j)N acts on a body of mass 2kg which is at rest. Find the velocity after 3 seconds.
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Question 13 Report
A straight line 2x+3y=6, passes through the point (-1,2). Find the equation of the line.
Question 14 Report
A curve is given by \(y = 5 - x - 2x^{2}\). Find the equation of its line of symmetry.
Question 16 Report
If \((2x^{2} - x - 3)\) is a factor of \(f(x) = 2x^{3} - 5x^{2} - x + 6\), find the other factor
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Question 17 Report
The 3rd and 7th term of a Geometric Progression (GP) are 81 and 16. Find the 5th term.
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Question 18 Report
How many ways can 6 students be seated around a circular table?
Question 19 Report
A binary operation \(\Delta\) is defined on the set of real numbers, R, by \(a \Delta b = \frac{a+b}{\sqrt{ab}}\), where a\(\neq\) 0, b\(\neq\) 0. Evaluate \(-3 \Delta -1\).
Question 20 Report
Given that \(f(x) = 5x^{2} - 4x + 3\), find the coordinates of the point where the gradient is 6.
Answer Details
Question 21 Report
Simplify \(\frac{\sqrt{128}}{\sqrt{32} - 2\sqrt{2}}\)
Question 22 Report
| Face | 1 | 2 | 3 | 4 | 5 | 6 |
| Frequency | 12 | 18 | \(y\) | 30 | \(2y\) | 45 |
Given the table above as the result of tossing a fair die 150 times, find the mode.
12 + 18 + y + 30 + 2y + 45 = 150 Simplifying the equation, we get: 3y + 105 = 150 3y = 45 y = 15 Now we can see that the frequency for face 3 is 15. To find the mode, we need to determine which face has the highest frequency. We can see that face 6 has the highest frequency with 45 occurrences. Therefore, the mode is 6.Question 23 Report
\(\alpha\) and \(\beta\) are the roots of the equation \(2x^{2} - 3x + 4 = 0\). Find \(\alpha + \beta\).
Question 24 Report
If \(log_{y}\frac{1}{8}\) = 3, find the value of y.
Question 25 Report
If \(x^{2} - kx + 9 = 0\) has equal roots, find the values of k.
x = (-b ± sqrt(b^2 - 4ac)) / 2a For the equation \(x^{2} - kx + 9 = 0\), the discriminant is: b^2 - 4ac = k^2 - 4(1)(9) = k^2 - 36 Since the roots are equal, the discriminant is zero: k^2 - 36 = 0 k^2 = 36 k = ±6 Therefore, the values of k that make the equation have equal roots are \(\pm6\).Question 26 Report
Given that \(\sin x = \frac{5}{13}\) and \(\sin y = \frac{8}{17}\), where x and y are acute, find \(\cos(x+y)\).
Question 27 Report
The velocity, V, of a particle after t seconds, is \(V = 3t^{2} + 2t - 1\). Find the acceleration of the particle after 2 seconds.
Question 28 Report
\(\alpha\) and \(\beta\) are the roots of the equation \(2x^{2} - 3x + 4 = 0\). Find \(\frac{\alpha}{\beta} + \frac{\beta}{\alpha}\)
Answer Details
Question 29 Report
If P = \({n^{2} + 1: n = 0,2,3}\) and Q = \({n + 1: n = 2,3,5}\), find P\(\cap\) Q.
Question 30 Report
Express cos150° in surd form.
Question 31 Report
Given that \(f(x) = 2x^{2} - 3\) and \(g(x) = x + 1\) where \(x \in R\). Find g o f(x).
Answer Details
Question 32 Report
| Face | 1 | 2 | 3 | 4 | 5 | 6 |
| Frequency | 12 | 18 | \(y\) | 30 | \(2y\) | 45 |
Given the table above as the results of tossing a fair die 150 times. Find the probability of obtaining a 5.
Question 33 Report
Given that \(\frac{6x+m}{2x^{2}+7x-15} \equiv \frac{4}{x+5} - \frac{2}{2x-3}\), find the value of m.
Question 34 Report
The function f: x \(\to \sqrt{4 - 2x}\) is defined on the set of real numbers R. Find the domain of f.
Question 35 Report
If \(y = \frac{1+x}{1-x}\), find \(\frac{dy}{dx}\).
Question 36 Report
In a class of 10 boys and 15 girls, the average score in a Biology test is 90. If the average score for the girls is x, find the average score for the boys in terms of x.
Question 37 Report
Find the coefficient of \(x^{4}\) in the expansion of \((1-2x)^{6}\).
Answer Details
Question 38 Report
There are 7 boys in a class of 20. Find the number of ways of selecting 3 girls and 2 boys
Question 40 Report
Given that \( a = \begin{pmatrix} 2 \\ 3 \end{pmatrix}\) and \(b = \begin{pmatrix} -1 \\ 4 \end{pmatrix}\), evaluate \((2a - \frac{1}{4}b)\).
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