Find the sum of -822 + 3 and -92? + 3x – 3.

Step-by-step explanation:

= (-822 + 3) + (-92)

= ( -819) + (-92)

= -911

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∠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°