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yuradex [85]
3 years ago
11

How to solve a system of equations using elimination?

Mathematics
1 answer:
Nastasia [14]3 years ago
5 0
If  you have a problem like: 
4x+2y=20
2x+2y=16
 You would subtract
4x-2y=20
-2x+2y=16
You would get the new problum
2x=4
You now want to divide the 2 on both sides to solve for x
x=2

Now that you've solved for X you want to solve for y. So use substitution to solve for y. You would want to substatute the x for the 2 in either of the problums. I'll use the first one.
4(2)+2y=20

You first want to multiply te 4(2) you would get a new problum.
8+2y=20

Now you want to subtract the 8 on both sides.
2y=12

The last step to solve for y is to divide the 2 on both sides.
Y=6

So your answers would be
x=2
y=6


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Zielflug [23.3K]

Answer:

2 < x < 24

Step-by-step explanation:

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13 - 11 < x < 13 + 11

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leva [86]
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so the area of the new deck is :

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Answer: width: 4, length: 16
3 0
3 years ago
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ryzh [129]

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vertical angle theorem

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Ganezh [65]
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The value -2 is a lower bound for the zeros of the function shown below.
Tju [1.3M]

Answer:

False

Step-by-step explanation:

f(x) = 4x³ - 12x² - x + 15

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