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V125BC [204]
3 years ago
12

I need help with this problem.please helpDirections: Solve each system by substitution.​

Mathematics
2 answers:
lidiya [134]3 years ago
5 0

Answer:

x=-1

y=-6

Step-by-step explanation:

To solve for x and y in 2x+3y=-20 start by substituting y for 6x

2x+3(6x)=-20 simplify the left side by multiplying 3 and 6x then add the product to 2x

20x=-20 now divide 20 on both sides

x=-1

now that you know what x is, you can solve for y

2x+3y=-20 substitute x for -1

2(-1)+3y=-20 now simplify by multiplying 2 and -1

-2+3y=-20 add -2 on both sides

3y=-18 now divide 3 on both sides

y=-6

artcher [175]3 years ago
3 0

Answer:

(-1,-6)

Step-by-step explanation:

Plug 6x for y into the bottom equation:

2x+3(6x)= -20

2x+18x= -20

20= -20

x= -1

Substitute -1 for x in the equation for y:

y=6(-1)

y=-6

I hope I could help :)

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earnstyle [38]

Answer:

The coordinates of the points that are members of the solution set

(-3,7), (0,4) and (2,3)

Step-by-step explanation:

we have

-3x-y< 12 ----> inequality A

The solution of the inequality A is the shaded area above the dashed line

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The solution of the inequality B is the shaded area above the solid line

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see the attached figure

Remember that,

If a ordered pair is a solution of the system of inequalities, then the ordered pair must be in the shaded area of the solution

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(-3, 7), (-3, -7), (3,-7), (-4,-0), (0,-4), (0,4), (2,3), (-2,3), (2,-3)

therefore

The coordinates of the points that are members of the solution set

(-3,7), (0,4) and (2,3)

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Step-by-step explanation:

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Step-by-step explanation:

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