Answer: 100 minutes
Step-by-step explanation:
7.5 gal/ft^3 for water
A 2160 ft^3 pool has room for (2160 ft^3)*(7.5 gal/ft^3) = 16,200 gallons of water
Water needed to fill: (16,200 gal - 1200 gal) = <u>15,000 gal</u>
Rate of filling: 20 ft^3/min
(20 ft^3/min)*(7.5 gal/ft^3) = <u>150 gal/min</u>
Tiome to add 15,000 gallons of water:
(<u>15,000 gal/150 gal/min)</u> = 100 minutes
Answer:
The student is incorrect.
Step-by-step explanation:
When you add the absolute value lines around a negative number, it becomes a positive number. If you add them to a positive number, it stays positive. Since the student added them to -9, the number would become 9 which if greater than 4.
Answer:
Step-by-step explanation:
Subtract 12 from both sides.
Divide both sides by 4.
Check our work with substitution:
We see that our work is correct.
Answer:
1: keith (they are the only ones that increase)
2:increase, 100% (i think, thats all i can see to do)
3: Juanita (they are the only ones that decrease)
4: heidi (25% of 12 is 3 so 12-3 = 9)
Step-by-step explanation:
hope this helped.