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)
O \$ 3.0015 * 10 ^ 13
\$ 1.0183 * 10 ^ 24
O \$ 2.9219 * 10 ^ 13
O \$ 2.9219 * 10 ^ 11
To find how much the debt increased in the 50-year period, we need to subtract the 1971 debt from the 2021 debt.
2021 debt = $2.9617 * 10^13
1971 debt = $3.98 * 10^11
Increase in debt = 2021 debt - 1971 debt
= (2.9617 * 10^13) - (3.98 * 10^11)
To subtract the values in scientific notation, we need to have the same exponent.
Converting the 1971 debt to scientific notation:
1971 debt = $398,000,000,000
= $3.98 * 10^11
Now we can subtract the values:
(2.9617 * 10^13) - (3.98 * 10^11)
= (2.9617 - 0.0398) * 10^13
= 2.9219 * 10^13
Therefore, the debt increased by $2.9219 * 10^13 in the 50-year period.
The correct answer is: O $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.
Debt in 2021 = \$2.9617 * 10^13
Debt in 1971 = \$3.98 * 10^11
Now we can calculate the increase in debt:
Increase in debt = Debt in 2021 - Debt in 1971
= (\$2.9617 * 10^13) - (\$3.98 * 10^11)
To subtract these numbers, we need to express them in the same exponential form:
(\$2.9617 * 10^13) = (\$2.9617 / \$1) * (10^13)
(\$3.98 * 10^11) = (\$3.98 / \$1) * (10^11)
So, the calculation becomes:
Increase in debt = (\$2.9617 / \$1) * (10^13) - (\$3.98 / \$1) * (10^11)
= \$2.9617 * 10^13 - \$3.98 * 10^11
Calculating this expression gives us:
Increase in debt = \$2.9617 * 10^13 - \$3.98 * 10^11
= \$2.9219 * 10^13
Therefore, the debt increased by \$2.9219 * 10^13 in the 50-year period.
The answer is: \$2.9219 * 10^13 (Option C)
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.
Step 1: Convert the debt values to their respective decimal notation:
The U.S. national debt in 2021 is $2.9617 * 10^13.
The U.S. national debt in 1971 is $3.98 * 10^11.
Step 2: Subtract the debt in 1971 from the debt in 2021:
($2.9617 * 10^13) - ($3.98 * 10^11)
To subtract these numbers, we need to first make sure the exponents are the same. Since both numbers have an exponent of 11, we can proceed with the subtraction:
2.9617 - 0.0398 = 2.9219
The resulting number is 2.9219.
Step 3: Convert the result back to scientific notation:
2.9219 can be written as $2.9219 * 10^13.
Therefore, the increase in the U.S. national debt over the 50-year period is $2.9219 * 10^13.
The correct answer choice is "O $2.9219 * 10^13".