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kakasveta [241]
3 years ago
7

An old railroad car was able to haul one days worth of coal in 15 hours the new railroad car only takes 10 hours because of high

demand both cars are used at the same time how long will it take them to transport one day supply of coal
Mathematics
1 answer:
masha68 [24]3 years ago
3 0

Step-by-step explanation:

Old Railroad Car:

  • 1 day of coal in 15 hours
  • 1/15 days of coal in 1 hour

New Railroad Car:

  • 1 day of coal in 10 hours
  • 1/10 days of coal in 1 hour

Total number of days of coal in 1 hour

= 1/15 + 1/10 = 1/6.

Since there is 1/6 days of coal in 1 hour,

there will be 1 day of coal in 6 hours.

It will take them 6 hours to transport the supply.

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Doug had a total of $75 to buy 3 pictures for his room. He paid the same amount for each picture and had $27 left over. How much
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Which best describes the equation that the graph represents?
andreev551 [17]

Answer:

y= \frac{9}{5}x

Step-by-step explanation:

Given the two points:

  • Origin (x1, y1) = (0, 0)
  • The point (x2, y2) = (5, 9)

Because the x-axis is labeled time (in minutes) and the y-axis is labeled distance (in kilometers).

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We have the standard form of a linear equation is:

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We know that, the slope of the function is:

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The line that goes through (0, 0) so we substitute (0, 0) into (1), we have:

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Gnesinka [82]
C is the answer because the X factors can’t repeat
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What is the surface area of the triangular prism?
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Answer:

<h2>135 ft²</h2><h2 />

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where b = 2.5 ft.

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<u>plugin values into the formula: </u>

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3 years ago
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