The angle of elevation of X from Y is 30o. If XY = 40m, how high is X above the level of Y?
10m
20m
20√3m
40m
50m
Correct answer is B
No explanation has been provided for this answer.
Factorize the following expression; 2x2 + x - 15
(2x+5)(x-3)
(2x-5)(x+3)
(2x-5)(x-3)
(2x-3)(x+5)
(2x+5)(x+3)
Correct answer is B
2x 2 + x - 15; 2x 2 + 6x - 5x - 15
(2x 2 + 6x) - ( 5x + 15)
2x(x + 3) - 5(x + 3)
(2x - 5)(x + 3)
The graph above is that of a quadratic function y = 2x2 - x - 6
The roots of the equation are
1.5, 2
-1.5, 2
1, -6
1, 6
-1, 6
Correct answer is B
The roots are; x = -1.5 and 2
Evaluate \(\frac{0.009}{0.012}\), leaving your answer in standard form.
7.5 x 102
7.5 x 101
7.5 x 10-1
7.5 x 10-2
7.5 x 10-3
Correct answer is C
\(\frac{0.009}{0.012}\)
=\(\frac{0.009}{0.012}\) = \(\frac{9}{12}\) = 0.75
=\(7.5 \times 10^{-1}\)
(35-2b)(b-1)
(7+b)(5-b)
(3+7b)(5-b)
(35-b)(3b+7)
(7+b)(5+b)
Correct answer is B
35 - 2b - b 2;
35 - 7b + 5b - b 2
7(5 - b) + 5(5 - b)
(7 + b)(5 - b)
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