Laura paid $27 for three books. if all of the books cost the same, how much did one book cost?

$9.

Step-by-step explanation:

She paid $27 for three books.

All three books cost the same amount, so divide $27 by three.

The answer is $9.

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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