3 years ago

Hello, I am stuck on how to solve the matrix problem of x - y = 5

Mathematics

1 answer:

Sergio [31]3 years ago

4 0

If you’re trying to elimination the answer would be (14,9)

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lisabon 2012 [21]

Yes that is correct

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3 years ago

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Simplify 4 + (−3 − 8)

Elis [28]

Answer:

-7

Step-by-step explanation:

4 + (−3 − 8)

PEMDAS

Parentheses first

4 + (-11)

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A nationwide survey of 100 boys and 50 girls in the first grade found that the daily average number of boys who are absent from

dusya [7]

Te difference of 2 standard deviation of a population n1 & n2 is given by the formula:
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1. WILL MARK BRAINLIEST!!! HELP!

MatroZZZ [7]

Answer:

$\frac{7}{x+7}$

Step-by-step explanation:

Step 1: Pull a 7 from the top

$\frac{7x + 42}{x^2 + 13x + 42}$

$\frac{7(x + 6)}{x^2 + 13x + 42}$

Step 2: Factor the bottom

$\frac{7(x + 6)}{(x + 7)(x + 6)}$

Step 3: Cancel the top (x+6) and the bottom (x+6)

$\frac{7}{x+7}$

Answer: $\frac{7}{x+7}$

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2 years ago

Enter the answer to the nearest tenth. Another home business has an average income of $1.200.00 per month with a standard deviat

Nonamiya [84]

Answer: -1.7

Step-by-step explanation:

Given : Another home business has an average income of $1.200.00 per month with a standard deviation of $100.00.

i.e. $\mu=\$1200.0$

$\sigma=\$100.00$

Let x represents the monthly income.

Since . $z=\dfrac{x-\mu}{\sigma}$

For x= 1030 , we have

$z=\dfrac{1030-1200}{100}=-1.7$

Hence, the required z-score = -1.7

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3 years ago