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)
Subtract 4.66×10−5^−7.34×10^−7 (1 point)
To subtract these numbers, we need to have the same base for the exponents. In this case, both numbers are written in scientific notation, so we can subtract them by subtracting the coefficients and keeping the same base and exponent.
4.66×10^(-5) - 7.34×10^(-7)
= (4.66 - 0.0734) × 10^(-5)
= 4.5866 × 10^(-5)
So, the result of the subtraction is 4.5866 × 10^(-5).
China and India are the most populous countries in the world. China’s population is approximately 1.45×10^9 , while India’s population is approximately 1,400,000,000. How many more people live in China than in India?(1 point)
Responses
To find out how many more people live in China than in India, we need to subtract India's population from China's population.
China's population is approximately 1.45×10^9.
India's population is approximately 1,400,000,000.
To simplify the calculation, we can convert China's population to the standard notation:
1.45×10^9 = 1,450,000,000
Now we can subtract India's population from China's population:
1,450,000,000 - 1,400,000,000 = 50,000,000
Therefore, there are 50,000,000 more people living in China than in India.
To find the increase in the U.S. national debt over the 50-year period (from 1971 to 2021), 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
To subtract the two debt amounts, we subtract the values of the exponents:
Debt increase = (2.9617×10^13) - (3.98×10^11)
To subtract the two values, we subtract the numerical parts and keep the same exponent:
Debt increase = 2.9617 - 3.98 = -1.0183
Since -1.0183 is a negative value, it means that the U.S. national debt decreased over the 50-year period.
To find how much the U.S. national debt increased in the 50-year period between 1971 and 2021, we need to subtract the debt in 1971 from the debt in 2021.
Debt increase = Debt in 2021 - Debt in 1971
Debt in 2021 = $2.9617×10^13 (given)
Debt in 1971 = $3.98×10^11 (given)
Now we can calculate the debt increase:
Debt increase = ($2.9617×10^13) - ($3.98×10^11)
To perform this calculation, we need to convert both numbers to the same exponential form. Let's convert $3.98×10^11 to the same form as $2.9617×10^13, which is:
Debt increase = ($2.9617×10^13) - ($ 0.398×10^13)
Simplifying the above equation, we get:
Debt increase = $2.5637×10^13
Therefore, the U.S. national debt increased by approximately $2.5637×10^13 (or $25.637 trillion) in the 50-year period between 1971 and 2021.
To find how much the debt increased in the 50 year period, we need to subtract the national debt in 1971 from the national debt in 2021.
$2.9617×10^13 - $3.98×10^11 = $2.9617×10^13 - $0.398×10^13
To subtract the terms with exponents, we need to make sure they have the same base. In this case, we can rewrite $0.398×10^13 as $3.98×10^12.
$2.9617×10^13 - $3.98×10^12
Now we can subtract the terms:
$2.9617×10^13 - $3.98×10^12 = $2.5617×10^13
So, the U.S. national debt increased by $2.5617×10^13 in the 50-year period.