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aev [14]
3 years ago
15

HELP!!! Write an algebraic expression to model the word phrase.

Mathematics
1 answer:
Naily [24]3 years ago
5 0
The answer to the question

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36/54 and 6/9
is a pair of proportional fraction 
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Dan has 50 coins that total $7.30. All of his coins are dimes, D, and quarters, Q. Write a system of equations that models this
Harman [31]

Answer:

d + q = 50

0.10d + 0.25q = 7.30

Step-by-step explanation:

Since all of the 50 coins are dimes and quarters, we can write the equation:

d + q = 50, where d is the number of dimes and q is the number of quarters

Now, we know that dimes are 10 cents, or $0.10 and quarters are 25 cents, or $0.25. So, if we multiply 0.10 by d, we get the total value of the dimes, and if we multiply 0.25 by q, we get the total value of the quarters. The total value of all dimes and quarters is 7.30, so we have the equation:

0.10d + 0.25q = 7.30

Thus, the system is:

d + q = 50

0.10d + 0.25q = 7.30

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4 years ago
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stellarik [79]

Answer:

2 hours and 48 minutes

Step-by-step explanation:

Time = Distance/Speed

        = 84/30

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To convert 2.8 hours into hours and minutes, 2.8*60 = 168 minutes. Therefore the time taken to travel 84miles is 2 hours and 48 minutes

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