Question

Help please!! Solve for y.

Answer 1

y = 3
`√(7)`

Explanation:

The 2 right triangles inside the right triangle are similar, then ratios of corresponding sides are equal, that is

`(y)/(9)` =
`(7)/(y)` ( cross- multiply )

y² = 63 ( take the square root of both sides )

y =
`√(63)` = 3
`√(7)`