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Drupady [299]
2 years ago
8

Penny reads 13 pages in 1/3 hour. What is the unit rate for pages per​ hour? For hours per​ page?

Mathematics
2 answers:
Free_Kalibri [48]2 years ago
8 0
39 pages per hour
13x3=39
Kryger [21]2 years ago
4 0

Answer:

39 pages per 1 hour

Step-by-step explanation:

13 pages per 1/3 of an hour,

1/3x3=1

13x3=39

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Write 1/5 as a percent.
Softa [21]

Answer:

0.2

Step-by-step explanation:

5 0
3 years ago
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The area of a rectangle is expressed as (14r + 21) square feet. If the width of the
lilavasa [31]

Answer:

 L  = 2r  + 3

Step-by-step explanation:

Given parameters:

Area of rectangle  = 14r + 21

Width of the rectangle  = 7ft

Unknown:

Length of the rectangle  = ?

Solution:

If the length of the rectangle is designated as L;

 Area of a rectangle = Length x width

Now insert the parameters:

           14r + 21   = L x 7

            L  = \frac{14r + 21}{7}  

           L  = 2r  + 3

8 0
3 years ago
HURRY I'LL PICK A BRAINLIEST PERSON!!!
mafiozo [28]
Hi!

I believe the answer is D , because the common denominator is 12 .

3 times 4=12
4 times 3=12
2 times 6= 12

You multiply each fraction by 12/1 .

Hope it helps and have a wonderful day !
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3 years ago
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News cameras take an overhead picture of a part of a crowd at an outdoor event. Journalists then count the number of people in t
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Answer:

cluster system

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Suppose the population of all public universities shows the annual parking fee per student is $110, with a standard deviation of
vampirchik [111]
The probability would be 0.9738.

We first find the z-score for each end of this interval:

z = (x-μ)/(σ/√n) = (100-110)/(18/√49) = -10/(18/7) = -3.89

z = (x-μ)/(σ/√n) = (115-110)/(18/√49) = 5/(18/7) = 1.94

Using a z-table (http://www.z-table.com) we see that the probability that a score is less than the first z-score is 0.  The probability under the curve to the left of, less than, the second z-score is 0.9738.  Subtracting these we find the area between them:
0.9738 - 0 = 0.9738.
3 0
3 years ago
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