x2 - 1x -15
2x2 - 11x + 15
22 - 5x - 8
x2 - 5x - 15
2x2 - 6x + 15
Correct answer is B
(2x - 5)(x - 3)
2x\(^2\) - 5x - 6x + 15
2x\(^2\) - 11x + 15
Find the 9th term of the arithmetic progression 18, 12, 6, 0, -6 .........
-54
-30
30
42
66
Correct answer is B
18, 12, 6, 0, -6, 12, -18, 24, -30
9th term = -30
10%
1.4%
7%
0.2%
0.1%
Correct answer is E
Length = 59.6m Breath = 40.3m Perimeter = (59.6m + 40.3m) x 2 = 99.9 x 2 = 199.8m Actual measurement Perimeter = (60 + 40) x 2 = 100 x 2 = 200m Error = 200m - 199.8m = 0.2 Error =0.2/200 x 100/1 = 0.1%
1
2
3
4
5
Correct answer is B
Log104 + Log1025 = Log10(4 + 25)
= Log10100 = Log10102
= 2Log1010 = 2 x 1 = 2
Simplify 56x\(^{-4}\) \(\div\) 14x\(^{-8}\)
2x-12
3x-3
4x-4
4x-3
4x4
Correct answer is E
\(56x^{-4} \div 14x^{-8}\)
= \(4x^{- 4 - (-8)}\)
= \(4x^{4}\)