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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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Gwen Mows 1/4 acre 3/4 hour. How many acres will Gwen mow in one hour
Tamiku [17]

Answer:

0.33...acre

Step-by-step explanation:

1/4=0.25

3/4=0.75

-------------

0.25/0.75=x/1

cross product

0.75*x=0.25*1

0.75x=0.25

x=0.25/0.75

x=0.3

3 0
3 years ago
N is a positive intiger. Explain why 2n+1 must be an odd number.​
pogonyaev

Answer:

Because the number would be multiplied by an even number, which is 2. If the number (odd or even) is multiplied by two, then the result would be an <em>even number</em>.

Proof:

2(1) = 2

2(6) = 12

2(7) = 14

2(3) = 6

The number would then be added by an odd number, which is 1. If an even number is added with an odd number, then the result would be an odd number.

Proof:

2 + 1 = 3

12 + 1 = 13

14 + 1 = 15

6 + 1 = 7

6 0
3 years ago
Will mark brainlest Thanks
klasskru [66]

Answer:

the answer is d

Step-by-step explanation:

5 0
3 years ago
Three out of every 10 students in Mr. Chan's class bring their lunch to school. Write this ratio as a percent.
aksik [14]
3/10 = 30%

30% of students bring their lunch.
3 0
3 years ago
Find the cube of 20 <br><br> A. 40<br> B. 400<br> C. 800<br> D. 8000
lapo4ka [179]
The cube of 20 can be written as 20^{3}. Split the 20 up into 2*10. Even though we are doing the cube of this value, first do 2*3=8 and then do 10^3=1000. Now multiply these numbers together so it is 8*1000=8000. Which is answer choice D. 8000
7 0
3 years ago
Read 2 more answers
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