What the answer to this question it’s 30 point

Mathematics

1 answer:

blondinia [14]4 years ago

6 0

Answer:

Step-by-step explanation:

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Given f (x) = 2x² +1evaluate f (-1).

soldi70 [24.7K]

Answer:

Step-by-step explanation:

f(x) = 2x^2 + 1

f(-1) means that wherever you see an x on the right hand side, you substitute -1.

f(-1) = 2(-1)^2 + 1 = 2 + 1 = 3

8 0

3 years ago

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Suppose that a company claims that its air fresheners last 19 days, on average. You take many large samples, and find, each time

spayn [35]

My answer would be B 19

19 days is what they claimed but the sample is outside of the 95% confidence interval so

19 x 95% = 19.95

Below this value, 19.95 is the probable mean number of days that the company's air fresheners last. 15,17, and 19 can be the mean number of days.

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3 years ago

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Please help! thanks!

9966 [12]

Yes, it is.
2(3) - 3(2) = 0
2(3) + 2 = 8

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3 years ago

Three consecutive odd integers add up to -3

Mandarinka [93]

Answer:

The investors are: -3, -1 and 1