Subtract 4.66 × 10^−5 − 7.34 × 10^−7
To subtract these numbers, we need to make sure the exponents are the same.
First, let's change the exponents:
4.66 × 10^(-5) = 0.0000466
7.34 × 10^(-7) = 0.000000734
Now we can subtract the two numbers:
0.0000466 - 0.000000734 = 0.000045866
Therefore, 4.66 × 10^(-5) minus 7.34 × 10^(-7) is equal to 0.000045866.
Subtract Numbers in Scientific Notation Quick Check
Subtract 4.66×10^−5 − 7.34 × 10^−7
2.68×102
2.68 times 10 squared
−2.68×102
negative 2.68 times 10 squared
4.5866×10−5
4.5866 times 10 superscript negative 5 baseline
−4.5866×10^−5
The correct answer is -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.
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
To perform the subtraction, we need to make sure the exponents are the same. We can do this by converting $3.98 × 10^11 to the same format as $2.9617 × 10^13.
$3.98 × 10^11 = $0.398 × 10^13
Now we can subtract the two values:
$2.9617 × 10^13 - $0.398 × 10^13 = $2.5637 × 10^13
Therefore, the U.S. national debt increased by approximately $2.5637 × 10^13 over the 50-year period.
$3.0015×10^13
I apologize for the error. The correct calculation is:
$2.9617 × 10^13 - $3.98 × 10^11 = $2.9617 × 10^13 - $0.398 × 10^13 = $2.9617 × 10^13 - $0.00398 × 10^13 = $2.95772 × 10^13
Therefore, the U.S. national debt increased by approximately $2.95772 × 10^13 over the 50-year period.
$2.9219×10^11
I apologize for the repeated errors. Let's calculate the increase in the U.S. national debt correctly:
$2.9617 × 10^13 - $3.98 × 10^11 = $2.9617 × 10^13 - $0.398 × 10^13 = $2.9617 × 10^13 - $0.0398 × 10^13 = $2.9219 × 10^13
Therefore, the U.S. national debt increased by approximately $2.9219 × 10^13 over the 50-year period.
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?
To find the difference in size between the hydrogen and oxygen atoms, we need to subtract their sizes.
1.2 × 10^(-10) m - 0.000000000152 m
To perform the subtraction, we need to make sure the units are the same.
1.2 × 10^(-10) m - 1.52 × 10^(-10) m
Now we can subtract the two values:
1.2 - 1.52 = -0.32 × 10^(-10) m
The difference in size between the hydrogen and oxygen atoms is approximately -0.32 × 10^(-10) m.
3.2 ×10^−10 m
I apologize for the error. Let's correct the calculation:
1.2 × 10^(-10) m - 0.000000000152 m
To subtract the values, we can convert 0.000000000152 m to scientific notation:
0.000000000152 m = 1.52 × 10^(-10) m
Now we can subtract the two values:
1.2 × 10^(-10) m - 1.52 × 10^(-10) m = (1.2 - 1.52) × 10^(-10) m = -0.32 × 10^(-10) m
Therefore, the difference in size between the hydrogen and oxygen atoms is approximately -0.32 × 10^(-10) m.