3 years ago

Find the missing angle.

Mathematics

1 answer:

sineoko [7]3 years ago

6 0

Answer:

121

Step-by-step explanation:

31+90 = 121

180 - 121 = 59

180 - 59 = 121

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podryga [215]

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Let us determine the product of 438 and 17 by partial products.

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Because she should have expressed 17 as (10+7), then if she multiplied (438 by 10) and (438 by 7). And, then added the results.Then her answer would be correct.

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