Which expressions are equivalent to 74-3x-3)? Select two options.
10-5-x-21
0-7X-7(3)
6*x-21
06*x-4
71-x)+7(3)

None of them

Step-by-step explanation:

Let's say x is 1

74-3-3=68

a. 10-5-1-21= -17

b. 0-7-21= -29

c. 6-21= -15

d. 6-4= 2

71-1+21= 91

You probably wrote them wrong or you forgot to include the other parentheses.

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.

cosine

step-by-step explanation: