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Arisa [49]
2 years ago
15

Zoe invest $600 in college savings account. The account earns 5.7% interest compounded quarterly. How many years will it take fo

r Zoe's account to reach $7,000?
Mathematics
1 answer:
GenaCL600 [577]2 years ago
8 0

Answer:

43.407 years

Step-by-step explanation:

Zoe invest $600 in college savings account. The account earns 5.7% interest compounded quarterly. How many years will it take for Zoe's account to reach $7,000?

We are asked to find time t in a compound interest formula

The formula is given as:

t = log(A/P) / n[log(1 + r/n)]

A = Total amount = $7000

P = Principal = $600

n = number of times interest is compounded = Quarterly =4

r = Interest rate = 5.7% = 0.057

Hence,

t = log(7000/600) /4[log (1 + 0.057/4)]

t = 43.407 years

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Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students
Alex17521 [72]

Answer:

85.7

Step-by-step explanation:

Given that two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90.

Section A total score = 15*80=1200

Section B total score 20*90 = 1800

Overall total score=3000

Overall total students = 15+20 =35

Hence overall mean = \frac{3000}{35} \\=85.7143

rounding off to one decimal place

overall mean = 85.7

7 0
3 years ago
4x-6 + 2x = 18<br> What’s the answer
solmaris [256]

Answer:

x=4

Step-by-step explanation:

4x-6 + 2x = 18

Combine like terms

6x -6 = 18

Add 6 to each side

6x-6+6 =18+6

6x = 24

Divide each side by 6

6x/6 = 24/6

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6 0
3 years ago
Ten measurements of impact energy on specimens of A238 steel at 60 ºC are as follows:
ElenaW [278]

Answer:

Step-by-step explanation:

6 0
3 years ago
How do i solve 6x=5x+7 by using solving systems by elimination?
klio [65]
I just learned about it. Simple!

6x=5x+7
Subtract 5x from both sides.
-5x -5x
You end up with
1x=7   or  x=7



7 0
3 years ago
Read 2 more answers
Luis es repartidor de leche el tiene 534 bolsas y las reparte entre cierto numero de tienda de modo que a cada le corresponde 28
OlgaM077 [116]
The first thing we must keep in mind is that there are 2 bags left over.
 Therefore, Luis distributed:
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 The number of bags will be:
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 Answer:
 
Luis distributed milk for 19 stores.
8 0
3 years ago
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