The 4th term of a G.P is 3 and its first term is 81. What is its common ratio?
3
23
13
-13
-3
Correct answer is C
No explanation has been provided for this answer.
Express the quotient of 0.422 and 0.004 in standard form
1.055 × 102
10.55 × 101
105 × 100
10.55 × 10-1
1.055 × 10-2
Correct answer is A
= 0.4220.004
= 4.22×10−14×10−3
= 1.055×10−1−(−3)
= 1.055×102
Evaluate ut - 12ft2 when t = 5, u = -20 and f = 10
225
72
-75
-125
-225
Correct answer is E
No explanation has been provided for this answer.
If cos x = 4/5, 0° ≤ x ≤ 90°, find the value of (1 + tan x)/(1 - tan x)
9
7
4
716
925
Correct answer is B
No explanation has been provided for this answer.