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victus00 [196]
3 years ago
11

Mari has a part time job. She earns $7 an hour. She makes at most $143.50 a week. What is the greatest number of hours that she

worked
Mathematics
1 answer:
Readme [11.4K]3 years ago
8 0
591.928571 is your answer
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Find the mean, variance and standard deviation of the probability distribution overtime hours 0,1,2,3,4,5,6 probability.015,.070
Alex_Xolod [135]
Okay so the mean is 3, standard deviation is 2.16 and the variance is 4.66.
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3 years ago
When
bekas [8.4K]
The correct answer is w=8x2 - y
6 0
3 years ago
If y is directly proportional to x square and y equal 1/8 when x = 1/2 what is the positive value of x when y it was 9/2?
mojhsa [17]

Answer:

d

Step-by-step explanation:

Given y is directly proportional to x² then the equation relating them is

y = kx² ← k is the constant of proportion

To find k use the condition y = \frac{1}{8} when x = \frac{1}{2}, then

\frac{1}{8} = k(\frac{1}{2} )² = \frac{1}{4} k ( multiply both sides by 8 )

1 = 2k ( divide both sides by 2 )

k = \frac{1}{2}

y = \frac{1}{2} x² ← equation of proportion

When y = \frac{9}{2} , then

\frac{9}{2} = \frac{1}{2} x² ( multiply both sides by 2 )

9 = x² ( take the square root of both sides )

x = ± \sqrt{9} = ± 3

with positive value x = 3 → d

8 0
3 years ago
5% of what number is 63?
masha68 [24]
To find the percentage of a number, you take the percent - 5% - and change it to a decimal by moving the percent over 2 times to the left and multiplying it by the number. So...

.05 x 63
= 3.15

Answer: 5% of 63 is 3.15
6 0
3 years ago
Find the sum or difference. 8 1/6 + 7 3/8
Lilit [14]
15 13/24 or in decimal form 15.5416
4 0
3 years ago
Read 2 more answers
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