Simplify(0.3 x 105) \(\div\) (0.4 \(\times\) 107), leaving you answer in the standard form.
7.5 x 10-4
7.5 x 10-3
7.5 x 10-2
7.5 x 10-1
Correct answer is B
\(\frac{0.3 \times 10^5}{0.4 \times 10^7} = \frac{3 \times 10^{-1} \times 10^{5}}{4 \times 10^{-1} \times 10^7}\)
\(\frac{3 x 10^4}{4 x 10^4}\)
\(\frac{3}{4}\) x 104-6 = 0.75 x 10-2
= 7.5 x 10-3
Find the LCM of 23 x 3 x 52, 2 x 32 x 5 and 23 x 33 x 5
22 x 33 x 52
23 x 33 x 5
22 x 32 x 52
23 x 33 x 52
Correct answer is D
23 x 3 x 52
2 x 32 x 5
22 x 33 x 5
The L.C.M = 22 x 33 x 52
Evaluate(111two)2 and leave your answer in base 2.
111001two
110001two
101001two
10010two
Correct answer is B
No explanation has been provided for this answer.
In the diagram what is x + y in terms of z?
180o - z
180o + z
z - 180o
z
Correct answer is A
x + y + z = 180(sum of angles in a \(\bigtriangleup\))
x + y = 180 - z
6.28cm
12.6cm
22.6cm
62.8cm
Correct answer is B
Length of arc = \(\frac{\theta}{360 \times 2 \pi r}\)
= \(\frac{72}{360} \times 2 \times \frac{22}{7} \times 10\)cm
= 12.57
= 12.6cm(3 s.f)
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