The difference of two trinomials is x^2 − 10x + 2. If one of the trinomials is 3x^2 − 11x − 4, then which expression could be the other trinomial? 2x^2 − x − 2
2x^2 + x + 6
4x^2 + 21x + 6
4x^2 − 21x – 2

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

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