Please help me please

B

Step-by-step explanation:

So we have a 45-45-90 triangle.

This is a special right triangle. In a 45-45-90 triangle, the side lengths are x, and the hypotenuse will be x√2

Since the hypotenuse is 3, we can set it equal to x√2 to solve for x. Therefore:

Divide both sides by √2:

Rationalize:

Our answer is B.

bdhfnfhjffjkfjfjfjjf

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh