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 = $\sqrt{80}$

$\sqrt{80}$ <<< Can be further simplified

4√5 = y

Hope this helped!

~Just a girl in love with Shawn Mendes