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Dmitry [639]
3 years ago
8

What is -4x+4y=12 in elimination

Mathematics
1 answer:
Alborosie3 years ago
4 0
I might be wrong but don’t you need two equations to do the elimination process?
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A plane flew 525 miles in 1.75 hours. Find the average speed of the plane.
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We are trying to find the average speed of the plane, which is mph, or \dfrac{\textrm{miles}}{\textrm{hour}}. Using proportions, we can find the average speed of the plane in mph:

\dfrac{525 \,\, \textrm{miles}}{1.75 \,\,\textrm{hours}} = \dfrac{x \,\, \textrm{miles}}{1 \,\,\textrm{hour}}

  • Use the information from the problem to create a proportion. Remember that we are looking for mph, so we will call that x.

\dfrac{525}{1.75} \,\textrm{miles} = x \,\textrm{miles}

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The average speed of the plane is 300 mph.

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Step-by-step explanation:

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