1 answer:
Answer:
b = 100°
c = 30°
Step-by-step explanation:
b = 100° bc the two angles are supplementary, that is, together they form a straight angle and add up to 180°.
c = 30°
because a + b + c = 180. There's 180° in a triangle.
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Step-by-step explanation:
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Step-by-step explanation:
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Answer:
1/12
Step-by-step explanation:
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1/2-[-3/12+8/12]
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