the height of the poster must be multiplied by the ratio which is 1 to 2.5 which is 40 cm.
Answer:
a. the investment earns 4%
b. yes
Step-by-step explanation:
The "rule of 72" says that an investment earning compound interest at x% will double in value after 72/x years. That is, ...
f(x) = 72/x
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<h3>a.</h3>
We interpret f(4) to mean Becky's friend is interested in the doubling time for an investment that earns 4% interest.
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<h3>b.</h3>
Using the above formula, ...
f(4) = 72/4 = 18
The friend's math is correct.
I hope this helps you
a=C/8.pi.b
Answer:
24 feet
Step-by-step explanation:
160/100=1,6
1% - 1,6 square feet
100-5-25-45-10=15
1,6 x 15= 24