Subtract 4.66 × 10 ^−5 −7.34 × 10^−7 (1 point)

Responses

−4.5866×10^−5

4.5866×10^−5

2.68×10^2

−2.68×10^2

2 answers

To subtract the given numbers in scientific notation, we must first make sure the exponents are the same.

4.66 × 10^−5 = 0.0000466
7.34 × 10^−7 = 0.000000734

Subtracting these two numbers gives us 0.000045866.

Writing this in scientific notation, we get 4.5866 × 10^−5.

Therefore, the correct answer is option B: 4.5866×10^−5.
The U.S. national debt was $2.9617 × 10^13 in 2021 and $3.98 × 10^11 in 1971. Find how much the debt increased in the 50-year period. (1 point)
Responses

$2.9219×10^11
2.9219 dollars times 10 superscript 11 baseline

$1.0183×10^24
1.0183 dollars times 10 superscript 24 baseline

$2.9219×10^13
2.9219 dollars times 10 superscript 13 baseline

$3.0015×10^13
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