JAMB - Mathematics (2017 - No. 26)
Evaluate \(\frac{0.00000231}{0.007}\) and leave the answer in standard form
3.3 x 10-4
3.3 x 10-3
3.3 x 10-5
3.3 x 10-8
설명
\(\frac{0.00000231}{0.007}\) to standard form
= \(\frac{231 \times 10^{-8}}{7 \times 10^{-3}}\)
= 33 × 10\(^{-8 − (−3)}\)
= 33 × 10\(^{− 8 + 3}\)
= 33 × 10-5
= 3.3 x 10^-4