truesarah111
15.11.2019 •
Mathematics
Check all of the values that have three significant figures.
a. 0.690
b. 356
c. 5.03
d. 1408
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Ответ:
B) 9 Hours
Step-by-step explanation:
He had already completed 4 chairs, and worked for 9 hours to complete three more, bringing him to 7 chairs. 9/3 = 3, therefore it takes 3 hours per chair. He needs three more chairs, so 3x3=9, therefore 9 hours are left to finish the last three chairs.