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

Question

Responses

−4.5866×10−5
negative 4.5866 times 10 superscript negative 5 baseline

−2.68×102
negative 2.68 times 10 squared

4.5866×10−5
4.5866 times 10 superscript negative 5 baseline

2.68×102
2.68 times 10 squared

Answer 1

−4.5866×10−5

Answer 2

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

$2.9219×1011
2.9219 dollars times 10 superscript 11 baseline

$3.0015×1013
3.0015 dollars times 10 superscript 13 baseline

$2.9219×1013
2.9219 dollars times 10 superscript 13 baseline

$1.0183×1024

Answer 3

To find the increase in the U.S. national debt over the 50-year period, we need to subtract the debt in 1971 from the debt in 2021.

$2.9617×10^13 - $3.98×10^11 = $2.9219×10^13

Therefore, the debt increased by $2.9219×10^13.

Answer 4

The size of a hydrogen atom is about 1.2×10−10 m across. The size of an oxygen atom is 0.000000000152 m across. What is the difference between the sizes of these atoms in scientific notation?(1 point)
Responses

2.72×10−10 m
2.72 times 10 superscript negative 10 baseline m

3.2×10−11 m
3.2 times 10 superscript negative 11 baseline m

3.2×10−9 m
3.2 times 10 superscript negative 9 baseline m

3.2 ×10−10 m
3.2 times 10 superscript negative 10 baseline m

Answer 5

To find the difference between the sizes of the hydrogen and oxygen atoms, we need to subtract the size of the hydrogen atom from the size of the oxygen atom.

0.000000000152 m - 1.2×10^−10 m = 2.72×10^−10 m

Therefore, the difference between the sizes of the hydrogen and oxygen atoms is 2.72×10^−10 m.