Question

Subtract and write your answer in scientific notation.
4 times 10 Superscript 7 feetminus3.12 times 10 Superscript 6 feet
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Part 1
4 times 10 Superscript 7 feetminus3.12 times 10 Superscript 6 feetequals
  
enter your response here feet
​(Use the multiplication symbol in the math palette as​ needed.)

Answer 1

To subtract the two numbers in scientific notation, we first need to express them with the same exponent.

We have:
- \(4 \times 10^7\)
- \(3.12 \times 10^6\)

We can convert \(3.12 \times 10^6\) to have the same exponent as \(4 \times 10^7\):

\[
3.12 \times 10^6 = 0.312 \times 10^7
\]

Now we can perform the subtraction:

\[
4 \times 10^7 - 0.312 \times 10^7 = (4 - 0.312) \times 10^7 = 3.688 \times 10^7
\]

Thus, the answer in scientific notation is:

\[
\boxed{3.688 \times 10^7} \text{ feet}
\]