taseem001
24.07.2019 •
Mathematics
How would you measure the length of a boat? a)meters b)grams c)kg d)cm e)liters how would you measure the mass of the cd? a)meters b)grams c)kg d)cm e)liters how would you measure the volume of a flower vase? a)meters b)grams c)kg d)cm e)liters
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Ответ:
rate for Steve is 1 room per 7hrs
combined rate:
1/8 + 1/7 = 1/T
7/56 + 8/56 = 1/T
15/56 = 1/T
56/15 = T
3 11/15 = 3 hrs 44 min