Question

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Part 1
Error Analysis  Your friend says that the product of 2.3 times 10 Superscript 7 and 2 times 10 Superscript negative 4 is 4.6 times 10 Superscript negative 3. What is the correct​ product? What mistake did your friend likely​ make?
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Part 1
left parenthesis 2.3 times 10 Superscript 7 right parenthesis left parenthesis 2 times 10 Superscript negative 4 right parenthesisequals
  
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​(Use scientific notation. Use the multiplication symbol in the math palette as​ needed.)

Answer 1

(2.3 × 10^7)(2 × 10^-4) = (2.3·2) × 10^(7 + (−4)) = 4.6 × 10^3.

Your friend likely made an exponent sign error — they computed 7 + (−4) as −3 instead of +3.