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4 years ago

11

X+y=-9 -1x-2y=-5 Solve using substitution PLEASE

2 answers:

givi [52]4 years ago

8 0

I think your answers are:
$y = - x - 9$
$y = - \frac{x}{3} + \frac{five}{two}$
My keyboard doesn't really work, my phone is cracked and I have, and I keep getting it wet, soo that's why I had to put 5 / 2 by smelling it out.

EleoNora [17]4 years ago

3 0

Y = -x - 9

-x -2(-x-9)=-5

-x +2x + 18 = -5
x + 18= -5
x= -23
-23+ y = -9
y= 14

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Delvig [45]

Answer:

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Step-by-step explanation:

The correct equation is:

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To solve by completing the square method.

Solution:

We have:

$c^2+11c=12$

In order to solve by completing the square method we will carry out the following operations to the given equation to get a perfect square binomial.

We can write as:

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$(c+\frac{11}{2})^2-(\frac{11}{2})^2+(\frac{11}{2})^2=12+(\frac{11}{2})^2$

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Taking LCD to add fraction.

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Taking square root both sides.

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Subtracting both sides by $\frac{11}{2}$ :

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4 years ago

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3 years ago

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Step-by-step explanation:

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Step-by-step explanation:

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