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Oksanka [162]
4 years ago
14

How do I do solving systems of equations by substitution?

Mathematics
1 answer:
alexdok [17]4 years ago
5 0

Step 1:Solve one of the equations for either x = or y = .

Step 2:Substitute the solution from step 1 into the other equation.

Step 3:Solve this new equation.

Step 4:Solve for the second variable.

I hope this helps!

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PLEASE HELP ASAP 40 PTS
DochEvi [55]

Answer:

40 + 3x + 4 + 3x + 4 = 180

48+6x=180

48 - 48 + 6x = 180 -4 8

6x = 132

6x/6 = 132/6

x = 22

Step-by-step explanation:

1. since the triangle is isosceles, angles A and C will have the same measures, so to solve for x, you can add another 3x + 4 or you can multiply A by 2.

2. add like terms

3. subtract

4. divide to get x

7 0
3 years ago
PLEASE ANSWER AS SOON AS POSSIBLE!
Tcecarenko [31]
The y- intercept has to be a point in the line where x is 0. Which means that in this case it would be -4.
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6 0
3 years ago
I need help with this question:(
vivado [14]
The answer is 8^18...
3*6 = 17 and the 8 stays the same
5 0
3 years ago
Give the angle pair name to justify your work equation setup and solve for x.<br> 6x - 24 2x + 12°
marta [7]

Answer:

x = 9

Step-by-step explanation:

4 0
3 years ago
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Tanya [424]

Answer:

Step 1

Step-by-step explanation:

You should isolate the variable, not try to get rid of it. Also, you have to divide both sides by the same number or variable(can't divide one side by a and the other side by 7- it has to be the same).

4 0
3 years ago
Read 2 more answers
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