Q: If $$ \sqrt {x^2+y^2}=25$$, and y=2x, find x. – McqOptions

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1.	Q: If $$ \sqrt {x^2+y^2}=25$$, and y=2x, find x.
A.	5
B.	25
C.	$$ \sqrt {125}$$
D.	$$ \sqrt {5}$$
Answer» D. $$ \sqrt {5}$$

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