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3 years ago

Y = 3/2x + 5/4 −2x + 8y = −25

Mathematics

1 answer:

Andreyy893 years ago

3 0

Answer:

Step-by-step explanation:

When solving algebra, it is important the we follow the steps in correct order and check our answer at the end.

Step 1: Simplify by combining like terms

y = -x/2 + 5/4 + 8y = -25

Step 2: Substitute

y = -25

-25 = -x/2 + 5/4 + 8(-25)

-25 = -x/2 + 5/4 + -200

-25 = -x/2 - 198 3/4

Step 3: Answer

x = -347 1/2

Step 4: Check

y = 3/2x + 5/4 −2x + 8y = −25

-25 = 3/2(-347 1/2) + 5/4 −2(-347 1/2) + 8(-25)

-25 = -25✔️

Step 5: Verified Answer

x = -347 1/2

I'm always happy to help :)

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3 years ago

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Read 2 more answers

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2 years ago

Solve the exponential equation for x<br> 3^7x+4=(1/27)^x-3

velikii [3]

Answer:

The solution is $x = \frac{1}{2}$

Step-by-step explanation:

To solve this exponential equation, we must write both sides as powers of 3.

The equation given is:

$3^{7x + 4} = (\frac{1}{27})^{x-3}$

Since $3^3 = 27$ , we have that $3^{-3} = \frac{1}{3^3} = \frac{1}{27}$ , so $\frac{1}{27} = 3^{-3}$

Then

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$3^{7x + 4} = (3^{-3})^{x-3}$

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3 years ago