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xeze [42]
3 years ago
15

This is my last question can someone help me with my homework.

Mathematics
1 answer:
shutvik [7]3 years ago
8 0

9514 1404 393

Answer:

  C, A, A

Step-by-step explanation:

In general, you ...

  • identify the coefficients of one of the variables
  • swap them, and negate one of them
  • multiply the corresponding equations by the "adjusted" coefficients.

__

In problem 1, the x-coefficients are 8 and 2. A common factor of 2 can be removed so that we're dealing with the numbers 4 and 1. Assuming we want to multiply one of the equations by 1, leaving it unchanged, the value we want to multiply by will be -4. After we swap the coefficients, that multiplier is associated with equation 2:

  multiply equation 2 by -4 . . . (eliminates x)

Likewise, the y-coefficients in problem 1 are -1 and 3. Again, if we want to multiply one of the equations by 1, leaving it unchanged, the coefficient we will change the sign of is -1 (becomes 1). After we swap the coefficients, the multiplier 3 is associated with equation 1:

  multiply equation 1 by 3 . . . (eliminates y)

These two choices are B and A, respectively, so the one that does NOT work for problem 1 is choice C, as indicated below.

__

The other problems are worked in a similar fashion.

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Step-by-step explanation:

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2 years ago
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goldfiish [28.3K]

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Hope this helps!

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5 0
3 years ago
Hi i need you to convert 9/15 into a decimal and show work please!
kozerog [31]

Answer:

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Step-by-step explanation:

9 is the numerator and 15 is the denominator

divide 9 ÷ 15

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3 0
2 years ago
Read 2 more answers
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IRISSAK [1]

ANSWER

114.52 meters per second

EXPLANATION

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To find the speed, we have to use the formula for speed which is:

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So, the unit rate of speed of the car is:

\begin{gathered} \text{Speed = }\frac{5726}{50} \\ \text{Speed = 114.52 meters per second} \end{gathered}

That is the unit rate of speed of the car in meters per second.

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Marysya12 [62]
It would be B !!


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