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Alexeev081 [22]
3 years ago
6

What should be done to these equations in order to solve a system of equations by elimination?

Mathematics
1 answer:
morpeh [17]3 years ago
7 0

Answer

You can multiply the first equation by 4 and the second equation by 3.

You can multiply the first equation by 4/3.

You can multiply the first equation by 3.

Explanation

When solving a system of equations by elimination, you want to add or subtract the equations to "get rid" of a variable.

To do that, one of the variables in both equations have to have the same coefficient.

The first answer possible gives x the coefficient of 12 for both equations. You would get 12x+4y=52 and 12x-9y=39. You could subtract those equations to get 13y=13.

The second way gives x the coefficient of 4. You would multiply the first equation by 4/3 to get 4x+4/3y=52/3. You can subtract to get one variable, and then solve from there. Although, multiplying for 4/3 is annoying, so it's not suggested.

You can also "get rid" the the y. Multiply the first equation by 3 to get 9x+3y=39. You can add these equations. When you add 9x+3y=39 and 4x-3y=13 you get 13x=52.

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What is the x intercept of y=x+3
OleMash [197]
To find the x intercept just substitute your y value for 0 then solve for x.

So you get 0= x+3 and then you get x=-3 which is at (-3,0).
3 0
3 years ago
Pls somone help me plssssss
Alex787 [66]

Answer:

a

Step-by-step explanation:

it LOST 950, which make the integer negative. in the second part of the answer, look for "earn", because to undo loss, you must gain.

Happy new years!

7 0
2 years ago
Read 2 more answers
Plz help me with this
olga55 [171]
Standard form: 2,000,947
Expanded form: 2,000,000+900+40+7
Word form: Two million nine hundred forty-seven
5 0
3 years ago
What is the common difference of the following arithmetic sequence? 120, 108, 96, 84, ...
IgorLugansk [536]

Answer:

-12

Step-by-step explanation:

120-108 = -12

5 0
3 years ago
I don't understand calculus at all bruh :/. I figured out some of this but I don't know it the answer is 0 or 2. Whoever figures
Lady_Fox [76]

Answer:

-2

Step-by-step explanation:

This one you just plug in 32 because there is no denominator of 0.

So as x goes to 32, y would go to 2 because 5rt32 = 2

<u>EDIT</u>

My bad, i didn't see it as -32. the answer would be -2 though I believe bc

5rt-32 = -2

8 0
3 years ago
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