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goblinko [34]
3 years ago
7

What is the slope of a line parallel to the line

Mathematics
1 answer:
Setler79 [48]3 years ago
6 0
For
ax+by=c
the slope is -a/b
the slope of paralell lines are the same

fidn slope

5x+3y=15
-a/b=-5/3
paralell as same slope
answer is A
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A customer service phone line claims that the wait times before a call is answered by a service representative is less than 3.3
Vika [28.1K]

Answer:

(A) Yes, since the test statistic is in the rejection region defined by the critical value, reject the null. The claim is the alternative, so the claim is supported.

Step-by-step explanation:

Null hypothesis: The wait time before a call is answered by a service representative is 3.3 minutes.

Alternate hypothesis: The wait time before a call is answered by a service representative is less than 3.3 minutes.

Test statistic (t) = (sample mean - population mean) ÷ sd/√n

sample mean = 3.24 minutes

population mean = 3.3 minutes

sd = 0.4 minutes

n = 62

degree of freedom = n - 1 = 62 - 1 = 71

significance level = 0.08

t = (3.24 - 3.3) ÷ 0.4/√62 = -0.06 ÷ 005 = -1.2

The test is a one-tailed test. The critical value corresponding to 61 degrees of freedom and 0.08 significance level is 1.654

Conclusion:

Reject the null hypothesis because the test statistic -1.2 is in the rejection region of the critical value 1.654. The claim is contained in the alternative hypothesis, so it is supported.

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3 years ago
3/2•6-3+5/3•3<br><br> anyone know this ?
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I believe the answers is 11
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How many terms are there in this expression? 3a + b - 4c <br> ——-<br> 3<br> 6<br> 5
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There's 3 terms

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PLZ HELP!!!! WILL MARK BRAINLIEST!!!!
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Answer:

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Step-by-step explanation:

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