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Andre45 [30]
3 years ago
6

What fractional part of a week is 63 hours

Mathematics
1 answer:
Rus_ich [418]3 years ago
7 0

Answer:

Week = 21/56

Step-by-step explanation:

1 week=24×7

1 week =168 hours

? Week =63 hours

By cross multiplying both equations

? Week=63/168

Week=21/56

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What is this answer i need to know please and how you figured it out?
Delicious77 [7]
What is your question?????
5 0
3 years ago
Read 2 more answers
Last week Anna received a pay check for $442.50. She noticed in the check stub that $47.30 of the money she earned had been with
Troyanec [42]

Answer:

Percentage of Taxes = 10.689 %

Step-by-step explanation:

Given that

Total earning of Anna is $442.50

The amount which is held with Taxes = $47.30

Now in terms of percentage

percentage of taxes from her total earning = \frac{47.30}{442.50} times 100

So % taxes = ( 0.106892) × 100

∴       Taxes percentage = 10.689 %

6 0
3 years ago
A high school student took two college entrance exams, scoring 1070 on the SAT and 25 on the ACT. Suppose that SAT scores have a
antoniya [11.8K]

Answer:

Due to the higher z-score, he did better on the SAT.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Determine which test the student did better on.

He did better on whichever test he had the higher z-score.

SAT:

Scored 1070, so X = 1070

SAT scores have a mean of 950 and a standard deviation of 155. This means that \mu = 950, \sigma = 155.

Z = \frac{X - \mu}{\sigma}

Z = \frac{1070 - 950}{155}

Z = 0.77

ACT:

Scored 25, so X = 25

ACT scores have a mean of 22 and a standard deviation of 4. This means that \mu = 22, \sigma = 4

Z = \frac{X - \mu}{\sigma}

Z = \frac{25 - 22}{4}

Z = 0.75

Due to the higher z-score, he did better on the SAT.

8 0
3 years ago
What number do you divide by 12 to get 9
finlep [7]

Well I don't know.  Let's figure it out together.

You said (a number) divided by 12 gives you 9 .

A fraction is the easiest way to show division, so
you can write this equation:

               (number) / 12  =  9

Now you can multiply each side of the equation by  12 .
When you do that, you have ...

                 number   =   9 x 12

                 <em>number   =    108</em> .

Now you know how to find it.  That's even better than just
having the answer.


5 0
3 years ago
Read 2 more answers
Plz help due tomorrow!!!!
Talja [164]

Answer:

E' = (-4, 3)  Answer C in your list of options

See attached image for the plot.

Step-by-step explanation:

Recall that a rotation in 180 degrees around the origin produces the following change in coordinates: (x, y) --> (-x, -y)

Therefore, since we read the coordinates of point E as: (-4, 3),

the new coordinates after the rotation will be: (4, -3) and the point will look like the red point in the attached image.

6 0
3 years ago
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