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1 year ago

Solve for x. 8.7 + X = 7 = 1.1 x = [?]

Mathematics

1 answer:

allsm [11]1 year ago

4 0

Answer:

-1.7

Step-by-step explanation:

8.7 + X =7

incorporate the shoes and socks method. We must do the opposite of what is being done. If we are adding X, we will subtract X on both sides leaving you with 8.7=7-x. We want X on one side of the equation so now we take the 8.7 and subtract on both sides giving 7-x-8.7. we must add X on both sides so we can have a X on one side thus X= 7-8.7. we can ordinary subtract and will give us -1.7.

X=-1.7

8.7+(-1.7) =7

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Step-by-step explanation:

The formula for compound interest, including principal sum is:

$A=P(1+\frac{r}{n})^{nt}$ , where:

A is the future value of the investment/loan, including interest
P is the principal investment amount
r is the annual interest rate (decimal)
n is the number of times that interest is compounded per unit t
t is the time the money is invested or borrowed for

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∴ P = 800

∵ The rate of deposit is 3.39%

∴ r = 3.39% = 3.39 ÷ 100 = 0.0339

∵ The money is compounded monthly

∴ n = 12

∵ t = 3

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∴ $A=800(1+\frac{0.0339}{12})^{12(3)}$

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- Round it to the nearest cent ⇒ hundredths place

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Learn more:

You can learn more about the interest in brainly.com/question/3614284

#LearnwithBrainly

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