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Sergeeva-Olga [200]
3 years ago
14

Three-sevenths of a number is 21. Find the number

Mathematics
2 answers:
ruslelena [56]3 years ago
7 0
You can set up a proportion that looks like 3/7 = x/21. X being the number that you are trying to find. Seven goes into 21 three times. So multiply 3 also by that 3 to get 9. So three sevenths of twenty-one is 9.
Softa [21]3 years ago
6 0

Answer:

the answer is 49

Step-by-step explanation:

The question is asking what the original number is. So its not 9. If you do a inverse operation which is 2 divided by 3/7 you get 49. To check your work if you multiply 49 by 3/7 you get 21.

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Find GCF of 5x^5 and 64x^2
Naddika [18.5K]

Answer:

4121x

Step-by-step explanation:

5x^5 + 64x^2

25x+4096x

4121x

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3 years ago
What is the value of mc011-1.jpg?<br> –4<br> –2<br> 2<br> 4<br><br> the pic is the .jpg
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3 0
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Read 2 more answers
So yeah. . .. idk how to do this
kipiarov [429]

<em>Please </em>use for reference. Merci.

To find rate of change simply divide y/x.

hour 2: 56/2=28

hour 4: 125/4~about 31.3 or 31

hour 5: 164/5=32.8 or ~ 33

hour 8: 271/8 ~ about 34 or 33.875

hour 13: 404/13 ~ about 31 or 31.0769231

What numbers are the largest?

hours 5 and 8

Thus, the correct answer was option C.

5 0
3 years ago
What is the input-output table for the function f(x) = 3x^2-x+4
mojhsa [17]

Answer:

Step-by-step explanation:

The input-output table can be made by putting value of x and finding the value of f(x)

f(x) = 3x^2-x+4

f(0) = 3(0)^2-0+4 = 0-0+4 = 4

f(1) = 3(1)^2-1+4 = 3-1+4 = 2+4 =6

f(2) = 3(2)^2-2+4 = 3(4)-2+4 = 12-2+4 = 10+4 = 14

f(3) = 3(3)^2-3+4 = 3(9)-3+4 = 27-3+4 = 24+4 = 28

So put value of x and find f(x) and fill the input-output table.

x  f(x)

0   4

1    6

2   14

3    28

3 0
3 years ago
What is 8 divided by 4/5
pychu [463]
The answer is 10 hoped that helped
5 0
3 years ago
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