Kidmarkham4475
11.11.2020 •
Mathematics
Plz answer this i will give the brianliest!
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Ответ:
11 ounces
Step-by-step explanation:
Find out how many ounces are in 4 pounds 2 ounces. There are 16 ounces in a pound, so that would be 66 ounces.Divide 66 by 6.Ответ:
Let the current speed be "c";
Then the boat speed in still wate is "5c":
Upstream speed:
distance = 12 miles ; rate = 5c-c = 4c mph ; time = 12/4c = 3/c hrs
Downstream speed:
distance = 12 miles ; rate = 5c+c = 6c mph ; time = 12/6c = 2/c hrs
Step-by-step explanation:
Equation:
time + time = 2 1/2 hrs
3/c + 2/c = 5/2
Multiply thru by 2c to get:
6 + 4 = 5c
c = 2 mph (speed of the current)
5c = 10 mph (speed of the boat in still water)