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labwork [276]
4 years ago
12

Solve the following system of equations: 2x - y = 7

Mathematics
1 answer:
wlad13 [49]4 years ago
5 0

Answer:

Step-by-step explanation: Not too sure how to explain it this is how you simplify it pretty sure

2x-y=7

+2x    +2x add to both sides to get y alone because it has no friends

___________

-y=7+2x get rid of the negative on the y value

__________

y= -2x -7

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if your bicycle tire has a diameter of 9 inches. how many rotations does each tire make if you travel 300 feet?
Vesnalui [34]
Step One
Calculate the number of feet traveled in 1 rotation.

Formula
C = π*d
P = 3.14
d = 9 inches = 9/12 feet = 3/4 of a foot.

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Step Two
Figure out the number of revolutions.
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1/x = 2.355/ 300  Cross multiply
2.355 feet * x = 1 rev * 300 feet
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