Answer:
about 1.4 hours
Step-by-step explanation:
3.13 gallons per minute.
60 minutes in an hour, so multiply both numbers by 60.
187.8 gallons per hour.
Divide the number of gallons we need to fill the tub the number of gallons put in per hour.
255÷187.8=1.375...
Round it, you get 1.4 hours.
It takes about 1.4 hours to fill the hot tub.
23 can round to 20 and 21 can also round to 20 so all u do is 20x20=400 so 400 is your estimated answer
Use a box. Split the terms into the boxes and then multiply across. Sort of like area multiplication, only with terms.
3 5x
4y 12y 20xy
3 9 15x
