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Rama09 [41]
3 years ago
12

Solve the equation 7x^2+21=0

Mathematics
1 answer:
Radda [10]3 years ago
6 0
Subtract 21 from both sides
7x^2=-21
Divide by seven on both sides
X^2=-3
Square root both sides

***X= square root of -3***
:)
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I believe it is 864, I'm not 100% sure. But I think it is.
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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?
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Step One
Calculate the number of feet traveled in 1 rotation.

Formula
C = π*d
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Step Two
Figure out the number of revolutions.
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