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Law Incorporation [45]
3 years ago
11

elimination was used to solve a system of equations. one of the intermediate steps led to the equation 2x= 8. which of the follo

wing systems could have led to this equation?

Mathematics
1 answer:
konstantin123 [22]3 years ago
8 0

9514 1404 393

Answer:

  C

Step-by-step explanation:

The step shown indicates that y was eliminated from the equations. For choices A, B, D, this is done by adding the equations together (the y-coefficients are opposites). The result of doing that gives x-terms of 4x, 0x, and 0x, respectively. These x-terms do not match the one given: 2x.

For choice C, the y-term is eliminated by subtracting twice the second equation from the first. Doing that gives ...

  (4x +2y) -2(x +y) = (14) -2(3)

  4x +2y -2x -2y = 14 -6 . . . . eliminate parentheses

  2x = 8 . . . . . . . . . . . . . . collect terms

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Write an equation for a line parallel to y=−4x+5 and passing through the point (4,-21)
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Answer:

Y=-4x-5

Step-by-step explanation:

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pochemuha

Answer:

Based on the current information, the last man remaining unmarried will be a choice between two

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Kevin marries Barbara

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Step-by-step explanation:

The basic method to sort which woman will be marrying which man is simple.

We have to extract the choice by comparing choices of each woman side by side and then selecting the least common one and hence sorting one by one.

First, let's name all the women and men

1. Anna

2. Barbara

3. Carol

4. Diane

5. Elizabeth

We will refer to them with the initial letter of their name . A for Anna, B for Barbara, C for Carol, D for Diane, E for Elizabeth.

The men :

1. Jason

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And they will be referred as J for Jason, L for Larry, M for Matt, K for Kevin, O for Oscar  and N for Nick.

Options for A : J , L ,M

Options for B : K, L

Options for C : J, N , O

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Kevin marries Barbara

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Elizabeth can marry either Jason or Matt,

Meanwhile Anna can marry either Jason , Larry or Matt  

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Matt marries Eilzabeth

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Further, seeing the options for Carol and Diane

Carol can marry either Jason, Nick or Oscar while Diane can marry Larry as well as Jason , Nick and Oscar

We can select Jason as the match for Anna as Larry is also a choice for Diane.

Hence, Jason marries Anna

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Now in the end, Carol can either choose between Nick or Oscar.

If she chooses Nick to marry, Oscar is left single

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