3 years ago

Math, please help i need this

Mathematics

2 answers:

goldenfox [79]3 years ago

6 0

Answer:

The first problem.

Step-by-step explanation:

-6 + (-6) + (-6) = -18

first problem: 3 · (-6) = -18

second problem: 6 · (-6) = -36

third problem: -3 · (-6) = 18

fourth problem: -6 · (-6) = 36

Therefore, the first problem is equivalent because it had the same answer as the original problem.

Crazy boy [7]3 years ago

3 0

Answer:

Step-by-step explanation:

-6-6-6

3(-6)

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Judy pays $29 for 8 gallons of gas and 2 bottles of water. Carmen pays $45 for 12 gallons of gas and 4 bottles of water. How muc

Dmitry [639]

G=gas
w=bottle of water

8g + 2w = 29
12g + 4w = 45
I'm going to use elimination to cancel out the variable w by multiplying the first equation by -2.

-16g - 4w = -58
12g + 4w = 45
-4g = -13
/-4 /-4
g = 3.25

Now plug it into an equation, any equation.
8 (3.25) + 2w = 29
26 +2w=29
w=1.5
Now to check, plug it into both equations if you want.

12 (3.25) + 4 (1.5)=45
39 + 6=45

One bottle of water is $1.50, while one gallon of gas is $3.25.

5 0

4 years ago

Identify the variables in the following. A) 4r- 3 B) x + 7

Doss [256]

A). 4r − 3

There are no like terms.

Answer:

= 4r − 3

B). x + 7

There are no like terms.

Answer:

= x + 7