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Klio2033 [76]
3 years ago
13

A student wrote the equation 4(x+5.5)=3(1.5x+4.75) to represent the problem shown. Find her mistake and correct it.

Mathematics
1 answer:
Afina-wow [57]3 years ago
8 0

Answer:

  • $8.5

Step-by-step explanation:

<u>The first group consists of Petra and 4 friends, so the total number of members is 5, therefore the left side of equation should be:</u>

  • 5(x + 5.5)

<u>The second group consists of 4 people, Valentina and 3 friends, therefore the right side of the equation should be</u>:

  • 4(1.5x + 4.75)

<u>Solving the equation to find the cost of a ticket for Petra's group:</u>

  • 5(x + 5.5) = 4(1.5x + 4.75)
  • 5x + 27.5 = 6x + 19
  • 6x - 6x = 27.5 - 19
  • x = 8.5

Cost of a ticket is $8.5

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Answer:

<u><em>x = ±1</em></u>

Step-by-step explanation:

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check

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2 years ago
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Shkiper50 [21]

To solve this problem, we are going to use a method called dimensional analysis. This involves canceling out units by multiplying by fractions equivalent to 1. We begin with our given information, that the jet flies 500 miles in one hour, and we multiply that by the fraction 1 hour/60 minutes, which is equivalent to 1. We also have to multiply by 1 minute/60 seconds, because we are looking for the amount of miles the jet flies in seconds.

500 miles/1 hour * 1 hour/60 minutes * 1 minute/60 seconds = 500 miles/3,600 seconds

Now that we have our equivalent in seconds, we must multiply by 10 seconds in order to find our answer.

500 miles/3,600 seconds * 10 seconds = approximately 1.3888 miles

Therefore, the jet flies about 1.39 miles in 10 seconds.

Hope this helps!

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3 years ago
880,005 rounded to the nearest hundred thousand is
MrMuchimi

Answer:

900,000

Step-by-step explanation:

It's so easy. Don't need to explain.

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