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Ksivusya [100]
3 years ago
8

Two cars leave the same point at the same time traveling in opposite directions. One car travels west at 20 mph and the other tr

avels east at 60 mph. In how many hours will they be 280 miles apart?
Mathematics
1 answer:
VashaNatasha [74]3 years ago
3 0

9514 1404 393

Answer:

  3.5 hours

Step-by-step explanation:

The separation distance is increasing at the rate of 20 mph + 60 mph = 80 mph. It will be 280 miles after ...

  time = distance/rate

  time = (280 mi)/(80 mi/h) = 3.5 h

The two cars will be 280 miles apart after 3 1/2 hours.

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Mohammad would like to graph the line that represents the total number of baseball cards he will
Marina CMI [18]

Answer:

To best show this information, the scale for the T-axis of his graph should go from 0 to at least 60.

To best show this information, the scale for the m-axis of his graph should go from 0 to at least 12.

Step-by-step explanation:

Mohammad will have collected T cards after m months, given that he buys 5 cards each month and he started with no cards.

The relationship describing this situation is

T=5m

When m=6, then T=5\cdot 6=30 cards.

When m=12, then T=5\cdot 12=60 cards.

To best show this information, the scale for the T-axis of his graph should go from 0 to at least 60.

To best show this information, the scale for the m-axis of his graph should go from 0 to at least 12.

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Question 1................
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3 years ago
Dylan has a bank that sorts coins as they are dropped into it. A panel on the front displays the total number of coins inside as
vesna_86 [32]

Answer:

1). System of equations- D + Q = 90 and D + 2.5Q = 175.50

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Step-by-step explanation:

Dylan has a bank that sorts coins as they are dropped in it.

A panel shows the total number of coins inside as well as the total value of these coins.

Let the number of dimes in the bank = D

and the number of quarters in the bank = Q

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Then the equation will be

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And the panel displays the amount of the coins = $17.55

Then equation will be

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Now we subtract equation (1) form equation (2)

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Q = \frac{85.5}{1.5}

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By putting Q = 57 in the equation (1)

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Therefore, there are 33 dimes and 57 quarters in the bank.

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Answer:

Step-by-step explanation:

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