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Mashutka [201]
3 years ago
15

Solve the equation using square roots: 2x²-17 = 15

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
3 0

2x² - 17 = 15

2x² = 15 + 17

2x² = 32

x² = 32/2

x² = 16

x = ±√16

x' = 4

x'' = -4

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skelet666 [1.2K]

Here is your answer:

In order to find your answer we will have to solve each option separately to see which one equals 6 × 5.

  • 6^5 = 6\times6\times6\times6\times 6 <---- Not the answer
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  • 6 + 6 + 6 + 6 + 6 = 35 <---- Your answer

Therefore your answer is option C "6 + 6 + 6 + 6 + 6 ."

Hope this helps!

8 0
3 years ago
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Answer is below.

<em>(Note to asker: Lack of explanations can get my answer deleted)</em>

<em />

<u><em>Step 1</em></u>

We'll to isolate the variable, but to do that, get rid of the coefficient that multiplies it.

To do that, divide both sides by 22.

\frac{22m}{22}=\frac{22}{10}

<em><u>Step 2.</u></em>

Now we have divided both sides by 22, but we'll need to reduce the fraction \frac{22m}{22}.

We can reduce the fraction by dividing the factors that are in the numerator and denominator.

That being said, 22 appears both in the numerator and denominator.

\frac{22m}{22}=m=\frac{2\times5}{2\times11}

<u><em>Step 3</em></u>

Now, for \frac{2\times5}{2\times11}, we'll need to reduce it to the lowest terms. Like in the 2nd step, we'll divide factors that are in the numerator and denominator.

That being said, 2 appears both in the numerator and denominator.

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The margin of error is used to describe the required allowance in terms of statistical points or percentage points by which a given set of result could vary from the actual sample. It represents the expected error between the actual population and the survey result

In this case the margin of error from the mean  is

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where z = z-score

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Step-by-step explanation:

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