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Scrat [10]
3 years ago
8

A. 18 is 20 percent of what number? B. 15 is 25 percent of what number? C. 12 is 30 percent of what number? D. 24 is 40 percent

of what number? E. 39 is 60 percent of what number? F. 78 is 30 percent of what number? Question: Represent each as an equation with x as the unknown number, and solve.
Mathematics
1 answer:
Kisachek [45]3 years ago
8 0

A. 18 is 20% of 90

B. 15 is 25% of 60

C. 12 is 30% of 40

D.  24 is 40% of 60

E. 39 is 60% of 65

F. 78 is 30% of 234

(Sorry I have to go, but hopefully I helped you)

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How do you Calculate the mean,median and mode in grouped data.
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Answer:

The mean:

data: 3,6,9,10

You first add all of the numbers together.

3+6+9+10= 28

There 4 numbers in the data set, so you divide 4 by the sum of all of the numbers.

28/4= 7

So the mean is 7.

The median:

data: 3,6,9,10

first put all of the numbers in numerical order.

3,6,9,10

Then you find the middle number in the data set.

3,6,(the middle number here),9,10

to find the middle number, do the mean of 6 and 9

The mean of 6 and 9 is 7.5

So, 7.5 is the median

another example: 3,4,7,9,13

The middle number is 7

so 7 is the median

The mode:

data: 3,6,9,10

The mode is the number that is repeated the most

in this data, there is no mode.

but in this data: 4,4,6,9,11

4 is the mode because it was repeated the most

7 0
2 years ago
Simplify.<br> 7x² - x + 9<br> + 6x² + 5x - 10<br> ___________<br><br> Will give brainliest.
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Answer:

13²+4−1

Step-by-step explanation:

<em><u>hope it helps</u></em>

3 0
3 years ago
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
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Show a number line 2/3 3/3
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3 years ago
The button on Carey's jacket has a diameter of 8 millimeters. What is the button's circumference?
Ahat [919]

Answer:

25.12 millimeters is your answer.

Step-by-step explanation:

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