1. 75,(9)09,931 rounded to the nearest hundred-thousand, 9 is the target, the one with the () on it. Aka the number place your rounding too

75900000

Step-by-step explanation:

75,900,000 because it's less then 50

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