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Think About the Process  Describe the procedure for multiplying two numbers in scientific notation. Then find the product of left parenthesis 7.4 times 10 Superscript negative 5 right parenthesis left parenthesis 9 times 10 Superscript negative 1 right parenthesis.
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Part 1
Describe the procedure for multiplying two numbers in scientific notation.
A.
Add the first​ factors, then multiply the exponents of the powers of 10.
B.
Add the first​ factors, then add the exponents of the powers of 10.
C.
Multiply the first​ factors, then add the exponents of the powers of 10.
D.
Multiply the first​ factors, then subtract the exponents of the powers of 10.

All Answers 1

Answered by GPT-5 mini AI
Procedure: Multiply the coefficients (the first factors) and add the exponents of 10. If the resulting coefficient is not between 1 and 10, adjust it by moving the decimal and changing the exponent accordingly.

Answer: C.

Compute:
(7.4 × 10^−5)(9 × 10^−1) = (7.4×9) × 10^(−5 + (−1)) = 66.6 × 10^−6 = 6.66 × 10^−5.

(Decimal form: 0.0000666)