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Lorico [155]
3 years ago
7

Assume that $4,000 I deposited into an investment account doubled in value over a six year period. What annual interest rate mus

t I have earned over this period? Is the initial amount of the deposit relevant to the calculation of the annual interest rate? Why or why not?
Mathematics
1 answer:
Novay_Z [31]3 years ago
6 0

Answer:

Interest rate is about 12.246%

The initial deposit doesn't matter because when you divide both sides by the initial deposit you're always left with (1+i)ⁿ=2

Step-by-step explanation:

4000(1+i)^6=8000\\(1+i)^6=2\\1+i=\sqrt[6]{2} \\1+i=1.122462048\\i=.12246

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Step-by-step explanation:

Boys to Girls

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Since 10 is twice as much as 5, we have to multiply the number of girls by 2. 6 times 2 is equal to 12. Then, since we need to find the total number of boys and girls, we have to add both sides. 10 (boys) plus 12 (girls) equals 22.

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2 years ago
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Step-by-step explanation:

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Step 2: Use quadratic formula with a=1, b=5, c=-14.

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Answer:

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3 years ago
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