Divide 13.31 x 1010 by 1.21 x 1015 and write the answer in standard form.
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Answer: 11 × 10^-5
Explanation:
13.31 = 11³ ÷ 10²
So, 13.31 × 10^10 = 11³ × 10^10 ÷ 10² = 11³ × 10^8 ....1
Now, 1.21 = 11² ÷ 10²
So, 1.21 × 10^15 = 11² × 10^15 ÷ 10² = 11² × 10^13 ....2
Now, dividing 1 by 2,
(11³ × 10^8) ÷ (11² × 10^13) = 11 × 10^-5
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