Write h in terms of a, b, c, d if a = b(1−ch)a−dh
h = a−bad
h = 1−bad−bc
h = (a−b)2ad−bc
h = a−bad−bc
h = b−aab−dc
Correct answer is D
a = b(1−ch)a−dh
a = b−bch1−dh
= a - adh
= b - bch
a - b = bch + adn
a - b = adh
a - b = h(ad - bc)
h = a−bad−bc
72.0
27.0
36.0
3.5
24.5
Correct answer is B
If log9x = 1.5,
91.5 = x
9^32 = x
(√9)3 = 3
∴ x = 27
N45.00
N48.00
N52.00
N60.00
N52.00
Correct answer is A
Let x be John's money, Janet already had N105, 13 of x was given to Janet
Janet now has 132x + 105 = x+3153
John's money left = 23x
= 14(x+315)3
= 23
24x = 3x + 945
∴ x = 45
Find correct to two decimals places 100 + 1100 + 31000 + 2710000
100.02
1000.02
100.22
100.01
100.51
Correct answer is A
100 + 1100 + 31000 + 2710000
1000,000+100+30+2710000 = 1,000.15710000
= 100.02
List all integers satisfying the inequality -2 ≤ 2 x -6 < 4
2, 3, 4, 5
2, 3, 4
2, 5
3, 4, 5
4, 5
Correct answer is B
-2 ≤ 2x - 6 < 4 = 2x - 6 < 4
= 2x < 10
= x < 5
2x ≥ -2 + 6 ≥
= x ≥ 2
∴ 2 ≤ x < 5 [2, 3, 4]