Given that log2a = log84, find a
21/3
42/3
42/3
22/3
23
Correct answer is D
Log2a = Log84
Log2a = Log882/3 → 2/3Log88 → 2/3 x 1
Log2a = 2/3
Recall; If Logax = y ∴ ay = x
Log2a = 2/3
22/3 = a
Express 0.000834 in standard form
8.34 x 10-4
8.34 x 10-3
8.34 x 103
8.34 x 104
8.34 x 106
Correct answer is A
No explanation has been provided for this answer.
If three children shares N10.50 among themselves in ratio 6:7:8, how much is the largest share?
N3.00
N3.50
N4.00
N4.50
N5.00
Correct answer is C
Ratio = 6 + 7 + 8 = 21
21 = N10.50
1 = 1050K/21 = 50K
6 = 6 x 50K = N3.00
7 = 7 x 50K = N3.50
8 = 8 x 50K = N4.00
the Largest share = N4.00
Find (101\(_2\))\(^2\), expressing the answer in base 2.
10101
11001
10010
11101
10110
Correct answer is B
You can convert it to base 10 and square, then re-convert it after the operation.
OR
You can multiply it straight applying the rules of binary multiplication.
19.5 - 20.4cm
19.1 - 20.9cm
19.9 - 20.1cm
19.95 - 20.05cm
19 - 21cm
Correct answer is A
In mathematics, numbers ranging from 0.5 - 0.9 are approximated to 1, while 0.1 - 0.4 are taken down to 0.