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trasher [3.6K]
4 years ago
15

−1/2 (x+2) + 112x = 3 x=?

Mathematics
1 answer:
AysviL [449]4 years ago
6 0

Given equation :−1/2 (x+2) + 112x = 3

We have -1/2 in front of parenthesis on left side .

It's better to remove fraction in an equation, in order make it easier to solve.

In order to remove 2 from denominator of 2, we need to multiply each and every term by 2.

Multiplying each term in the equation by 2, we get

2* −1/2(x+2) +2* 112x = 2*3.

On simplifying this step, we get

-1(x+2) +224x = 6.

Distributing -1 over (x+2), we get

-x -2 +224x = 6

Combining like terms on left side, -x+224x=223x

223x -2 = 6

Adding 2 on both sides, we get

223x -2+2 = 6+2

223x = 8

Dividing both sides by 223, we get

223x/223 = 8/223.

x= 8/223.

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Answer:

t=\frac{18.7-20}{\frac{5}{\sqrt{80}}}=-2.326    

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Step-by-step explanation:

Information given

\bar X=18.7 represent the sample mean for the content of active ingredient

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t=\frac{18.7-20}{\frac{5}{\sqrt{80}}}=-2.326    

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