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daser333 [38]
3 years ago
14

Simply the monomials below(-8x⁴ y³)•(2x⁵ y²)+7x⁹ y⁵​

Mathematics
2 answers:
vlada-n [284]3 years ago
6 0

Answer:

-9x^9y^5

Step-by-step explanation:

Do the multiply first:

-16x^9y^5+7x^9y^5

=x^9y^5(-16+7)

=-9x^9y^5

IgorC [24]3 years ago
5 0

Answer:

-9x^9y^5

Step-by-step explanation:

this could be wrong since there was a lot of terms but oh well

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Answer:

We conclude that the sample is from a population of songs with a mean greater than 210 seconds.

Step-by-step explanation:

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Alternate Hypothesis, H_A : \mu > 210 seconds      {means that the sample is from a population of songs with a mean greater than 210 seconds}

The test statistics that will be used here is <u>One-sample z-test statistics </u>because we know about population standard deviation;

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Therefore, we conclude that the sample is from a population of songs with a mean greater than 210 seconds.

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