The average human heart Beats 1.15 times 10 to the power of 5 per day. There are 3.65 times 10 to the power of 2 days in one yea
r. How many times does your heart beat. Write your answer in scientific notation, and round to one decimal place
1 answer:
Answer:
4.2·10⁷
Explanation:
Exponents are added when multiplying:
(a^b)(a^c) = a^(b+c)
1.15·10⁵ × 3.65·10² ≈ 4.2·10⁷
_____
Your calculator is designed to work with scientific notation. Scientific or graphing calculators can also display their output in scientific notation. A spreadsheet can also perform this calculation for you and display the result in the required format.
Calculators and spreadsheets sometimes use "E" in place of "×10^". That is, 4.2E7 means 4.2×10^7.
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