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worty [1.4K]
2 years ago
12

How to evaluate 4(x+2−5x) when x=2

Mathematics
2 answers:
Crank2 years ago
8 0

Answer:

-24

Step-by-step explanation:

4(x+2−5x)

Combine like terms

4(2 -4x)

Distribute

8 -16x

Let x=2

8 - 16(2)

8 - 32

-24

spayn [35]2 years ago
4 0
<h3>Given :</h3>

how to evaluate 4(x+2−5x) when x=2

<h3>To Find :</h3>

  • The value after evaluating

<h3>Solution :</h3>

  • We are provided that x equals 2 so have to put 2 instead of x to the desired result

4(x + 2 - 5x)

Putting the value of x we get

4(2 + 2 - 5 × 2)

According to BODMAS multiplication comes first then addition

So 5 × 2 will be solved after that we will simplify 2 added with 2

4(2 + 2 - 10)

4(4 - 10)

4(-6)

- 24

<u>Henceforth, the required answer is -24</u>

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In a survey of 300 T.V. viewers, 40% said they watch network news programs. Find the margin of error for this survey if we want
bixtya [17]

Answer:

<h2>0.05543</h2>

Step-by-step explanation:

The formula for calculating the margin of error is expressed as;

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Substituting this values into the formula will give;

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Hence, the margin of error for this survey if we want 95% confidence in our estimate of the percent of T.V. viewers who watch network news programs is approximately 0.05543

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