-x + 6y = -8 x-6y=8

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

3 0

Answer:

inifinitely many solutions

Step-by-step explanation:

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Smith sold 45 of his DVDs and purchased 10 more. If Smith has 15 DVDs now, how many DVDs did he have to begin with?

Scorpion4ik [409]

Let's set up a formula for this, where x is the amount of dvds he started with:

x-45+10=15
x-35=15
+35 +35
x=50

He had 50 DVDs to begin with.

Check
50-45+10
=15

6 0

3 years ago

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A faucet is used to add water to a large bottle that already contained some water. After it has been filling for 55 seconds, th

True [87]

Answer:

$y=3x+4$

Step-by-step explanation:

Let y be the amount of water in the bottle x seconds after the faucet was turned on.

We have been given that the gauge on the bottle indicates that it contains 19 ounces of water after it has been filling for 5 seconds. After it has been filling for 11 seconds, the gauge indicates the bottle contains 37 ounces of water.

We have two points on the line $(5,19)$ and $(11,37)$ .