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elena-14-01-66 [18.8K]
3 years ago
11

Penny reads 11 pages in one fourth hour. What is the unit rate for pages per​ hour? For hours per​ page?

Mathematics
2 answers:
krok68 [10]3 years ago
7 0
She is reading at a rate of 44 pages per hour
Nutka1998 [239]3 years ago
6 0
She is reading 44 pages in 1 hour. 
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Plzzz help square paralellogram
Brums [2.3K]

Answer:

1. x=12

2. x=7

Step-by-step explanation:

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3 years ago
Express the ratio 14 inches to 3 feet as a fraction in simplest form
artcher [175]
The answer is gonna be 14:36
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How to round 64781 in thousands
irina1246 [14]

Answer:

65000

Step-by-step explanation:

Just round the number

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3 years ago
What is the result when −2/3 subtracted from −14/15?
disa [49]

Step-by-step explanation:

14/15 - 2/3 =

14/15 and 2/3 lcm is 15

so 14/15 becomes 14/15

- 2/3 become 10/15

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so 14/15

-10/15=4/15

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answer is 4/15 and since 15 can't be divided by 4 equally it is in simplest form at 4/15

7 0
3 years ago
The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand
alexira [117]

Answer:

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }  

            t = <em>1.076</em>

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given Mean of the Population (μ) = 8.0

<em>Mean of the sample (x⁻) = 8.25</em>

Given data

                  8,9,9,8,8,9,8,7

Given sample size  n= 8

Given sample standard deviation(S) = 0.661

<u><em>Step(ii):-</em></u>

<em>Null hypothesis : H:  (μ) = 8.0</em>

<em>Alternative Hypothesis :H:(μ) > 8.0</em>

<em>Degrees of freedom = n-1 = 8-1=7</em>

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }<em></em>

<em>              </em>t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }<em></em>

<em>            t =  1.076</em>

<em>Critical value </em>

<em>                    t₍₇,₀.₀₅₎   = 2.3646</em>

<em>The calculated value   t =  1.076 < 2.3646 at 0.05 level of significance</em>

<em>Null hypothesis is accepted</em>

<em>Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0</em>

<em></em>

3 0
3 years ago
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