You can figure out what four times eight is by adding eight and eight(16) and doubling it (32)
Answer: C) 40 degrees
Step-by-step explanation:
if the total angle is 70 degrees and part of it is 30 degrees
then the other part is x degrees
30 + x = 70
30 - 30 + x = 70 - 30
x= 40
Hope this helped!
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You are inversing for subtraction which is addition so D