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Nezavi [6.7K]
3 years ago
12

Hannah can complete 4 math problems per minute.write and solve a direct variation equation to find how many math problems she ca

n expect to complete in 15 minutes
Mathematics
1 answer:
scoundrel [369]3 years ago
4 0
15 x 4 = 60
Hope this helps!
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if someone apply to 5 different colleges and 4 different majors how many different scenarios are there
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A. -4m - 12 - 5m = 13​
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Step-by-step explanation:

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3 years ago
If 7x = 24 y, find the ratio of x to y.​
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8 0
3 years ago
If x+y= 15, y+z=25, and x+z=20, what is the arithmetic mean of x,y, and z
Mama L [17]
X + y = 15
Rearrange this to isolate for x.
x = 15 - y


x + z = 20
Rearrange this to isolate for x also.
x = 20 - z

Since they are both equal to x, that means they are equal to each other (x = x)

Set them equal to each other. 

15 - y = 20 - z
Now, isolate for y.

y = 15 - 20 + z

Now, use y + z = 25 and isolate for y.
y = 25 - z

Since they are both equal to y, we set them equal to each other.

15 - 20 + z = 25 - z
Solve for z
z + z = 25 - 15 + 20
2z = 30
2z/2 = 30/z
z = 15

Now you can plug the value for z into the other equations to find y and x.

x + z = 20
x +15 = 20
x = 20-15
x = 5

y + z = 25
y + 15 = 25
y = 25 - 15
y = 10

6 0
3 years ago
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