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GenaCL600 [577]
3 years ago
9

−6(x+7)=−4x−2 how many solutions

Mathematics
2 answers:
yaroslaw [1]3 years ago
8 0

Answer: There is one solution, -20

Step-by-step explanation:

-6(x+7)=-4x-2\\\\Distribute\\\\-6x-42=-4x-2\\\\Add(6x)\\\\-42=2x-2\\\\Add(2)\\\\-40=2x\\\\x=-20

There is one solution, -20

Hope it helps <3

matrenka [14]3 years ago
7 0

Answer:

<h2>Only one solution</h2>

Step-by-step explanation:

Solution,

- 6(x + 7) =  - 4x - 2

Distribute -6 through the parentheses

- 6x - 42 =  - 4x - 2

Move variable to L.H.S and change its sign

- 6x + 4x  - 42 =  - 2

Move constant to R.H.S and change its sign

- 6x + 4x =  - 2 + 42

Collect like terms

- 2x  =  - 2 + 42

Calculate the sum

- 2 x = 40

Divide both sides of the equation by - 2

\frac{ - 2x}{ - 2}  =  \frac{40}{ - 2}

Calculate

x =  - 20

Hope this helps..

Good luck on your assignment..

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Answer:

Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .

Step-by-step explanation:

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We formulate the null and alternate hypotheses that the new program is effective

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The test statistic is

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The significance level ∝ is 0.05

The critical region for one tailed test is z ≤ ± 1.645

Since the calculated value of z= -1.496 does not fall in the critical region z < -1.645 we conclude that the new program is effective. We fail to reject the null hypothesis .

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3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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