Answer:
14
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Answer:
X= 9/sqrt3; Y= 18/sqrt3
Step-by-step explanation:
This is a 30, 60, 90 triangle, so the shortest side is x, the longer leg xsqrt3 and the hypotenuse is 2x.
xsqrt3=9, so divide both sides by sqrt3 to get x=9/sqrt3
Then y=2x, so multiple 9/sqrt3 by 2 to get 18/sqrt3
What a delightful little problem !
You said that (4 + x) / (9 - x) = -9
Multiply each side by (9 - x) : (4 + x) = -9 (9 - x)
Eliminate parentheses: 4 + x = -81 + 9x
Add 81 to each side: 85 + x = 9x
Subtract 'x' from each side: 85 = 8x
Divide each side by 8 : <em>85/8 = x </em> (or 10.625)
