Rita is adding 3 + (–8) + 1. she rewrites the expression as 3 + (–1) + 8. what is rita’s error?

Rita made the negative and the positive

Step-by-step explanation:

we have

eliminate the parenthesis

----> in the expression the is positive and the is negative

Rita made the negative and the positive

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