Answer:
y = sqrt(80) or 4*sqrt(5)
the proportion is y/8 = 10/y
Step-by-step explanation:
Complete the proportion:
y/8 = 10/y
This is done by dividing the hypotenuse of the first triangle over the leftmost leg, and equating this ratio to the second triangle with the corresponding side lengths.
Rearranging:
y^2 = 80
y = sqrt(80) --> 4*sqrt(5)
