SOLUTION: Q: If x is a positive integer such that 350<7x^2<450, find x.

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Question 567508: Q: If x is a positive integer such that 350<7x^2<450, find x.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
x in an integer such that 200<3x^3<400, find x.
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Divide thru by "3" to get:
(200/3) < x^3 < (400/3)
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Take the cube root along the line:
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cbrt[200/3] < x < cbrt[400/3]
4.0548 < x < 5.1087
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Answer: 5
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cheers,
Stan H.