The answer is 142 because 38 and m∠1 are supplementary angles which means they add up to 180 so all you have to do is subtract 38 from 180 which gets you 142.
Answer:
Z = 0.5
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The answer is 4. 2x plus 7 is equal to 15. First you subtract 7 from both sides then divide by 2 to get the answer 4. Hope this helps!