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BigorU [14]
4 years ago
13

Please answer all questions

Mathematics
1 answer:
dusya [7]4 years ago
7 0

Answer:

(A) 11.51%

(B) 13.27%

(C) We are 95% confident that the true value of the population mean is in between 7.70 and 8.30

(D) Increase

(E) Decrease

Step-by-step explanation:

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Express this number in scientific notation.<br> 78 million
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What is the product?
Olenka [21]

The value of the product expression (-2x-9y²)(-4x-3) is 8x² + 6x + 27y² + 36xy²

<h3>How to evaluate the product?</h3>

The expression is given as:

(-2x-9y²)(-4x-3)

Expand the expression

8x² + 6x + 27y² + 36xy²

Hence, the value of the product expression (-2x-9y²)(-4x-3) is 8x² + 6x + 27y² + 36xy²

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You are running a fuel economy study. One of the cars you find is blue. It can travel 28 2/5 miles on 1 1/4 gallons of gasoline.
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