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borishaifa [10]
3 years ago
7

Solve the system of equations by substitution. x+y=18 y=8x

Mathematics
2 answers:
stira [4]3 years ago
4 0

Answer:

2

Step-by-step explanation:

x + y = 18

y = 8x

x + 8x = 18

9x = 18

x = 18÷9

x = 2

Naddika [18.5K]3 years ago
3 0

Answer:

x=2, y=16

Step-by-step explanation:

x+y=18

y=8x

x+8x=18

x=2

y=16

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Answer:

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Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

A(t) = P(1 + \frac{r}{n})^{nt}

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

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This means that r = 0.04, n = 1

What equation will calculate the value in x years?

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2 years ago
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elena55 [62]

Answer:

Hello

Step-by-step explanation:

The domain is limited with 2 lines parallel: -1 ≤ x ≤ 1

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Step-by-step explanation:

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Damm [24]

Answer:

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Step-by-step explanation:

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2 years ago
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