Sean chewed 2/5 of his rawhide bones. if he had 10 bones to begin with, how many did he chew up?

He chewed four bones.

He chewed up 4 of the bones.

Step-by-step explanation:

In order to find this, we multiply the number we started with by the ratio.

10 bones * 2/5 = 4 bones

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

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