The U.S. national debt was $2.9617 x 10^13 in 2021 and $3.98 x 10^11 in 2021 and in 1971. Find how much the debt increased in the 50-year period. (1 point)
$2.9219 × 10^11
$3.0015 × 10^13
$2.9219 × 10^13
$1.0183 × 10^24
To find the increase in the national debt over the 50-year period, we need to subtract the debt in 1971 from the debt in 2021.
Therefore, the increase in the debt is:
($2.9617 x 10^13) - ($3.98 x 10^11) = $2.9219 x 10^13
Hence, the correct answer is $2.9219 x 10^13.
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.
Debt in 2021: $2.9617 × 10^13
Debt in 1971: $3.98 × 10^11
Subtracting the two debts gives us:
($2.9617 × 10^13) - ($3.98 × 10^11) = $2.9219 × 10^13
Therefore, the increase in the U.S. national debt over the 50-year period is $2.9219 × 10^13.
So the correct answer is:
$2.9219 × 10^13
To find the increase in the U.S. national debt over a 50-year period, we need to subtract the debt in 1971 from the debt in 2021.
The debt in 1971 is given as $3.98 × 10^11 (398 followed by 9 zeros).
The debt in 2021 is given as $2.9617 × 10^13 (2.9617 followed by 12 zeros).
To subtract these two values, we can use scientific notation arithmetic. First, let's make sure both values have the same exponent. We need to convert the debt in 1971 to scientific notation:
$3.98 × 10^11 = $3.98 × 10^(11+12) = $3.98 × 10^23
Now, we can subtract the two values:
$2.9617 × 10^13 - $3.98 × 10^23
When subtracting values in scientific notation, we keep the base the same and subtract the exponents. In this case, the base is both $ and the exponent is 13 - 23 = -10.
So, we have:
$2.9617 × 10^13 - $3.98 × 10^23 = $2.9617 × 10^(-10)
The answer is $2.9617 × 10^(-10), which can also be written as $2.9617 × 10^(-10+10) = $2.9617 × 10^0 = $2.9617.
Therefore, the increase in the U.S. national debt in the 50-year period is $2.9617.
However, none of the answer options provided match this result. It appears there may be an error in the given answer choices.