Jack spends 1 1/5 as long on his homework as jill.
last week, jill spent 6 1/2 hours doing homework.
how long did jack spend doing homework?
7 4/5
but i don't understand this question:
the week before, jack spent 22 1/2 hours doing homework.
how long did jill spend doing homework?
what's the answer to that one ^ ? ?

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.

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