SOLUTION: What is the value of X if the hypotenuse is 9 and one leg is X and the other leg is 3x, in a right angled triangle ?

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Question 1039291: What is the value of X if the hypotenuse is 9 and one leg is X and the other leg is 3x, in a right angled triangle ?
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
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What is the value of X if the hypotenuse is 9 and one leg is X and the other leg is 3x, in a right angled triangle ?
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x%5E2+%2B+%283x%29%5E2 = 9%5E2,

x%5E2+%2B+9x%5E2 = 81,

10x%5E2 = 81,

x%5E2 = 81/10  --->  x = sqrt%2881%2F10%29 = 9%2Fsqrt%2810%29 = %289%2Asqrt%2810%29%29%2F10.