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lara31 [8.8K]
3 years ago
7

For 21-22, simplify the algebraic expressions. 21. -3(6y) 22. -7a(3b)

Mathematics
2 answers:
Monica [59]3 years ago
8 0

21.

-3(6y)

multiplying we get

-18y

22.

-7a(3b)

on multiplying we get

-21ab

Tomtit [17]3 years ago
3 0

(21)

-3(6y)

we can multiply it

=-3*6*y

=-18*y

=-18y............Answer

(22)

-7a(3b)

we can multiply it

=-7a*3b

=-7*a*3*b

we can rearrange it

=-7*3*a*b

=-21*a*b

=-21ab...............Answer

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F(v)=6+v^2 how do I solve
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Step-by-step explanation:

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Hannah claims that people who live in southern states spend 9 hours more per week outside than do people in northern states. She
Aneli [31]

Answer: Hello your question is incomplete below is the missing part

Which of the following statements about Hannah’s claim is supported by the interval?

A) Hannah is likely to be incorrect because the difference in the sample means was 18.6−14.4=4.218.6−14.4=4.2 hours.

B) Hannah is likely to be incorrect because 9 is not contained in the interval.

 C)The probability that Hannah is correct is 0.99 because 9 is not contained in the interval.

 D)The probability that Hannah is correct is 0.01 because 9 is not contained in the interval.

 E)Hannah is likely to be correct because the difference in the sample means (18.6−14.4=4.2)(18.6−14.4=4.2) is contained in the interval.

Answer :  Hannah is likely to be incorrect because 9 is not contained in the interval. ( B )

Step-by-step explanation:

The statement that is supported by the interval in Hannah's claim is that

Hannah is likely to be incorrect because 9 is not contained in the interval.

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2 years ago
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Sindrei [870]

Answer:

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3 years ago
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