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kupik [55]
2 years ago
12

3[-x + (2 x + 1)] = x - 1 what is x

Mathematics
1 answer:
lubasha [3.4K]2 years ago
8 0

Answer:

the answer is x=-2 as answer

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A truck is carrying 513 pounds. There are 27 boxes of chocolate in the truck. About how much does each box weigh?
Volgvan

Answer:

19

Step-by-step explanation:

To solve this, we must divide: 513/27= 19

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3 0
3 years ago
Two planes left simultaneously from the same airport and headed in the same direction towards another airport 3600 km away. The
ExtremeBDS [4]

Answer:

  • 800 kph
  • 600 kph

Step-by-step explanation:

<u>Equation</u>

Let s represent the speed of the faster plane. Then its travel time is ...

  time = distance/speed = 3600/s

travel time for the slower plane is ...

  time = distance/speed = 3600/(s -200)

The difference in these times is 1.5 hours, so we have ...

  3600/(s -200) -3600/s = 1.5

<u>Solution</u>

Multiplying by (2/3)s(s -200), we get ...

  2400(s) -2400(s -200) = s(s -200)

  s^2 -200s -480000 = 0 . . . . . . . . . . rewrite in standard form

  (s -800)(s +600) = 0 . . . . . . . . . . . . . factor

The positive value of s that makes a factor zero is s = 800.

<u>Conclusion</u>

The speed of the faster plane was 800 km/h; of the slower plane, 600 km/h.

_____

<em>Check</em>

The travel time for the faster plane was 3600/800 = 4.5 hours. For the slower plane, 3600/600 = 6 hours, a difference of 1.5 hours.

6 0
3 years ago
These two triangles are similar. Solve for X.
Paul [167]

Answer:

Hello I am not 100% on my answer but I would assume that X is 2.5 and Y is 6.5

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Sammy went to visit his grandma. He traveled by bus for 24% of his trip. How long was Sammy's trip if he traveled 15 miles by bu
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15 miles is 24% so .625 miles is 1% and 62.5 miles is 100%
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3 years ago
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Answer:

What is the question?

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5 0
3 years ago
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