Kevin can paint a small room in 18 hours. Kevin and Caleb together can paint the same room in 15 hours. How long would it take for Caleb to paint the room alone?

5+2x=a

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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

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.