3 years ago

What terms can be combined with 3a? Select all that apply.

Mathematics

2 answers:

antiseptic1488 [7]3 years ago

6 0

Answer:

You can only add like terms with like terms, so the terms that can be combined with 3a are the terms that end in an a.

So, the answers are:

4a and 14a

Let me know if this helps!

viva [34]3 years ago

3 0

Answer:

4a and 14a

Let me know if this helps!

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the Wall Street Journal reported that automobile crashes cost United States $162 billion annually. The average cost per person f

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a) Margin of error = 166.311

b) sample size ≥ 62

Step-by-step explanation:

Given:

Average cost = $1599

Sample size = 50 persons

Standard deviation = $600

Confidence level is 95%

a) Margin of error = $z\frac{\sigma}{\sqrt{n}}$

Now for confidence level of 95% z-value = 1.96

Thus,

Margin of error = $1.96\frac{600}{\sqrt{50}}$

Margin of error = 166.311

b) For Margin of error ≤ 150

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sample size ≥ 62

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