<PRE><B>Question 176918</B>
Solve for x: (The following is all the info I have about this right triangle.) 
Leg a is x
Leg b is 4x
Leg c is ? 
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The answer depends on whether leg c is or is not the hypotenuse.
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1st If it is the hypotenuse:
c^2 = a^2 + b^2
c^2 = x^2 + (4x)^2 = 17x^2
c = xsqrt(17)
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2nd: if it is not the hypotenuse and b is the hypotenuse:
b^2 = a^2 + c^2
(4x)^2 = x^2 + c^2 
c^2 = 16x^2 - x^2
c^2 = 15x^2
c = xsqrt(15)
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Cheers,
Stan H.</PRE>