Question 135 I feel ashamed that i dont know maf or how to spel

k = 3

Step-by-step explanation:

=> 4.5 + 1.5 k = 18 - 3k

=> 1.5 k + 3k = 18 - 4.5

=> 4.5 k = 13.5

Dividing both sides by 4.5

=> k = 3

k = 3

Step-by-step explanation:

4.5 + 1.5k = 18 - 3k

Add 3k to both sides.

4.5 + 4.5k = 18

Subtract 4.5 from both sides.

4.5k = 13.5

Divide both sides by 4.5

k = 3

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.

hope this !

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