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bonufazy [111]
3 years ago
8

Please help!

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
7 0
Ur whole be a for the following reasons
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2x-y=4 and y=-2x+8.<br><br> Can anyone help me solve
Komok [63]

Answer:

The correct answer is x = 3 and y = 2.

Step-by-step explanation:

There are many ways to solve systems of equations like this, but I'm going to use substitution.  This means taking the value of y given by the second equation and plugging it into the first equation.  This is modeled below:

2x - y = 4

2x - (-2x+8) = 4

Now, we can simplify the left side of the equation.

2x + 2x - 8 = 4

4x - 8 = 4

We should add 8 to both sides as the next step.

4x = 12

Now we can divide by 4.

x = 3

To solve for y, we can substitute this value found for x back into either one of our original equations.

y = -2x + 8

y = (-2*3) + 8

y = -6 + 8

y = 2

Therefore, the correct answer is x = 3 and y = 2.

Hope this helps!

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In the circle graph, what is the measure of the central angle for corn?
KatRina [158]

multiply the percentage of the corn by 360 degrees

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Solve this system using elimination (20 POINTS)<br> 4x-7y=3<br> x-7y=-15
stiv31 [10]

Answer:

x = 6, y =3

Step-by-step explanation:

4x-7y=3

x-7y=-15

Multiply the first equation by -1

-4x+7y=-3

Then add this to the second equation to eliminate y

-4x+7y=-3

x-7y=-15

------------------

-3x +0y = -18

-3x = -18

Divide by -3

-3x/-3 = -18/-3

x = 6

Now find y

x -7y = -15

6 -7y = -15

Subtract 6 from each side

6-7y-6 = -15-6

-7y = -21

Divide by -7

-7y/-7 = -21/-7

y =3

4 0
2 years ago
What is the positive solution to the equation 0=-x^2+2x+1?
Hatshy [7]

Answer: x^2-2x-1

Step-by-step explanation:

0=x^2+2x+1

x^2-2x-1

3 0
3 years ago
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