PLZ PLZ PLZ PLZ PLZ PLZ HELP I NEED HELP PL 12 POINTS The expression 2(4+v)+9v is simplified in several steps below.

For each step, choose the reason that best justifies it.

8+2v+9v

commutative property of addition

associative property of addition

distributive property of addition

combining like terms

8+11v

commutative property of addition

associative property of addition

distributive property of addition

combining like terms

11v+8

commutative property of addition

associative property of addition

distributive property of addition

combining like terms

Pick from the options what the equations are

a.) distributive property

b.) combining like terms

c.) cumutitative property

the answer is b i just did that

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.