3 years ago

HELP HELP ME PLS IT"S DUE

Mathematics

1 answer:

s2008m [1.1K]3 years ago

8 0

Answer:

x=21

PR= 32

Step-by-step explanation:

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Explain how you determined which operation was needed to write the equation. 9 divided by 3/4

DiKsa [7]

9/ (3/4)

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=36/3

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Veseljchak [2.6K]

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∠1 and ∠2 are supplementary angles. ∠1 and ∠3 are vertical angles. If m ∠2=72 degrees, then find m ∠3

JulsSmile [24]

Answer:

m<3 = 108

Step-by-step explanation:

Since <1 and <2 are supplementary, the equation is:

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If there are 1,200 calories in 8 oz of hot fudge, how many calories are in 1,500 men, how many women are there?

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3 years ago

A customer service phone line claims that the wait times before a call is answered by a service representative is less than 3.3

8_murik_8 [283]

Answer:

Step-by-step explanation:

Let x be the wait times before a call is answered in phone calls.

The claim is x bar <3.3 minutes

Sample size n =62

Sample mean - x bar = 3.24 minutes

Population std dev = $\sigma = 0.40 minutes\\$

Since population std dev is known and also sample size is sufficiently large, we can use Z test.

$H_0: x bar = 3.3\\H_a: x bar$

(one tailed test)

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Since p value > alpha, we accept null hypothesis.

There is no evidence to support the claim at alpha = 0.08

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