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3 years ago

2) Solve the System of Equations using Substitution. -3x+2y=12 x=2y-8

Mathematics

2 answers:

Nady [450]3 years ago

6 0

Answer:

x=-2. y=3

Step-by-step explanation:

So, it tells us that x=2y-8.

Now substitute x into the equation.

-3(2y-8)+2y=12

- 6y+24+2y=12

-4y+24=12

-4y=-12

y=-12/-4

y=3

Now that we know that y=3 substitute y into the second equation equation.

x=2(3)-8

x=6-8

x=-2

So in the end x=-2 and y=3

Hope this helps

Ne4ueva [31]3 years ago

5 0

Answer:

y=3, and x= -2

Step-by-step explanation:

-3x= -2y+12

x=2y-8

3x=2y-12

3x=6y-24

2y-12=6y-24

-4y=-12

y=3

x= -2

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Triangle JKL has vertices J(2,5), K(1,1), and L(5,2). Triangle QNP has vertices Q(-4,4), N(-3,0), and P(-7,1). Is (triangle)JKL

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Yes they are

Step-by-step explanation:

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In the triangle QNP, the sides can be calculate as following:

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It can be seen that QPN and JKL have: JK = QN; JL = QP; KL = NP

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