Evaluate frac 0 00000231 0 007 and leave the an... - JAMB Mathematics 2017 Question
Evaluate (\frac{0.00000231}{0.007}) and leave the answer in standard form
A
3.3 x 104
B
3.3 x 10-3
C
3.3 x 10-4
D
3.3 x 10-8
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Correct Option: C
(\frac{0.00000231}{0.007}) to standard form
= (\frac{231 \times 10^{-8}}{7 \times 10^{-3}})
= 33 × 10(^{-8 − (−3)})
= 33 × 10(^{− 8 + 3})
= 33 × 10-5
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