According to the U.S. Census Bureau, about 63% of Americans are adults (18 and over). Use the U.S. population estimate of 308 mi
2 answers:
Answer: 194,000,000
Step-by-step explanation:
Given : According to the U.S. Census Bureau, about 63% of Americans are adults (18 and over).
We can rewrite 63% as 0.63 [ ∵ we divide 100 to convert a percent into decimal]
The estimated population of U.S in 2010= 308 million
We know that 1 million = 1,000,000
⇒The estimated population of U.S in 2010= 308,000,000
Now, the number of American adults in 2010 will be :-
[Roundedto the nearest hundred thousand]
hence, the approximate number of American adults in 2010= 194,000,000
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Answer:
It takes 22.52 years for the balance to triple in value.
Step-by-step explanation:
Continuous compounding:
The amount of money earned using continuous compounding is given by the following equation:
In which A(0) is the initial amount of money and r is the interest rate, as a decimal.
Interest rate of 5%.
This means that , and thus:
Time for the balance to triple?
This is t for which . So
It takes 22.52 years for the balance to triple in value.