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d1i1m1o1n [39]
3 years ago
6

345 ft/min converts to how many ft/hr

Mathematics
1 answer:
sergiy2304 [10]3 years ago
3 0
345 * 60 = 20700. So it converts to 20700 ft/hr
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I need the answer. !’
EleoNora [17]

Answer:

B) -9

Step-by-step explanation:

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-5x-5= 25

16 -25 = -9

3 0
3 years ago
A mistake was made in the steps shown to simplify the expression. Which step includes the mistake?
Zolol [24]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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The answer to this question asap please
Mkey [24]

At 13% significance level, there isn't enough evidence to prove the administrators to claim that the mean score for the​ state's eighth graders on this exam is more than 280.

<h3>How to state hypothesis conclusion?</h3>

We are given;

Sample size; n = 78

population standard deviation σ = 37

Sample Mean; x' = 280

Population mean; μ = 287

The school administrator declares that mean score is more (bigger than) 280. Thus, the hypotheses is stated as;

Null hypothesis; H₀: μ > 280

Alternative hypothesis; Hₐ: μ < 280

This is a one tail test with significance level of α  = 0.13

From online tables, the critical value at α  = 0.13 is z(c) = -1.13

b) Formula for the test statistic is;

z = (x-  μ)/(σ/√n)

z = ((280 - 287) *√78 )/37

z = -1.67

c) From online p-value from z-score calculator, we have;

P[ z > 280 ] =  0.048

d) The value for z = -1.67  is smaller than the critical value mentioned in problem statement z(c) = - 1.13  , the z(s) is in the rejection zone. Therefore we reject H₀

e) We conclude that at 13% significance level, there isn't enough evidence to prove the administrators to claim that the mean score for the​ state's eighth graders on this exam is more than 280.

Read more about Hypothesis Conclusion at; brainly.com/question/15980493

#SPJ1

5 0
1 year ago
What is the solution set for the open sentence with the given replacement set y2 -3=y+ [0,1,3,4]
stich3 [128]
It is three cuz when replace with three it is all equal:
3(2)-3=3
6-3=3
3=3
please rate as brainliest and hope this helps :)
7 0
3 years ago
Y=1/2x+2 need answers on graph
Aneli [31]

Answer:

the slope is 1/2 and the Y - intercept is 2

X       Y

0       2

2       3

Step-by-step explanation:

5 0
3 years ago
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