Question

Suppose that y varies directly as the square root of X, and that y = 45 when x = 225. What is y when x = 127 Round your answer to two decimal places if

necessary

Answer 1

y=381

Explanation:

given: y=45 x=225

y=kx

45=k√(225)

45=k(15)

45=15k

45/15=15k/15

3=k

given: x=127 k=3

y=kx

y=3(127)

y=381