Question

______________help pls

Answer 1

You must use Pythagorean theorem, which is
`a^(2) +b^(2) =c^(2)`

a and b are both legs (the two legs are the sides that form a perpendicular right angle) while c is the hypotenuse (side opposite the right angle)

In this case...

a = y

b = 8

c = 12

^^^Plug these numbers into Pythagorean theorem

`y^(2) +8^(2) =12^(2)`

Simplify as much as possible

`y^(2)` + 64 = 144

Isolate y by subtracting 64 to both sides

`y^(2)` + (64 - 64) = 144 - 64

`y^(2)` = 80

Further isolate y by taking the square root of both sides. This will take away the square from the left side

y =
`√(80)`

`√(80)` <<< Can be further simplified

4√5 = y

Hope this helped!

~Just a girl in love with Shawn Mendes