Which expression is equivalent to -9 - \left(-4\dfrac13\right)−9−(−4 3 1 )minus, 9, minus, left parenthesis, minus, 4, start fraction, 1, divided by, 3, end fraction, right parenthesis? choose 1 choose 1 (choice a) a -)−4 3 1 −(−9)minus, 4, start fraction, 1, divided by, 3, end fraction, minus, left parenthesis, minus, 9, right parenthesis (choice b) b -4\dfrac13+(-9)−4 3 1 +(−9)minus, 4, start fraction, 1, divided by, 3, end fraction, plus, left parenthesis, minus, 9, right parenthesis (choice c) c -9 +4\dfrac13−9+4 3 1 minus, 9, plus, 4, start fraction, 1, divided by, 3, end fraction (choice d) d 9-\left(-4\dfrac13\right)9−(−4 3 1 )9, minus, left parenthesis, minus, 4, start fraction, 1, divided by, 3, end fraction, right parenthesis stuck? watch a video or use a hint. report a problem 4 of 4

the answer is a

step-by-step explanation:

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2