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Elden [556K]
3 years ago
12

Mary Ellen invests $4000 in an account that earns 1.8% annual interest compounded monthly.

Mathematics
1 answer:
Vaselesa [24]3 years ago
3 0

Answer:

22.5 years to the nearest tenth.

Step-by-step explanation:

The equation is

6000 = 4000(1 + 0.018/12)^12t     where t = the number of years

(1 + 0.018/12)^12t  = 1.5

1.0015^12t = 1.5

Taking logs:

12t log 1.0015 = log 1.5

12t = log 1.5 / log 1.0015

12t = 270.51

t = 22.54 years.

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If the sum of the first and third consecutive integer is 44, what are these three integers?
emmasim [6.3K]
Hello There!

x + x + 2 = 44
2x + 2 = 44
- 2          - 2
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Numbers are 21, 22 and 23.

Hope This Helps You!
Good Luck :)
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3 years ago
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givi [52]

Answer:

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Ivanshal [37]

Answer:

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Step-by-step explanation:

First search up the quadratic formula which is

x = (- b + or - square root(b^2 - 4ac)) / 2a

and to find a, b, and c you need this formula

ax^2 + bx + c = 0 (btw this is the safest solution to finding your answer with a number in-front of a quadratic equation.)

Math:

a = 3, b = -13, c = 11

b = -13, because of the x on the other end of the equation as the equation above "ax^2 + bx + c = 0" you need the zero to proceed to this next step.

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