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Bogdan [553]
3 years ago
14

Three boxes have a total weight of 640 pounds. Box A weights twice as much as Box B. Box C weight 30 pounds more than Box A. How

much do each of the boxes weigh?
Mathematics
1 answer:
Zarrin [17]3 years ago
4 0

Answer:

  A: 244 pounds

  B: 122 pounds

  C: 274 pounds

Step-by-step explanation:

We have A+B+C = 640; A=2B; C=A+30. Substituting the last into the first gives ...

  A + B + (A +30) = 640

  2A +B = 610 . . . . . . . . . . . . subtract 30

Substituting the second into this equation gives ...

  2(2B) +B = 610

  B = 610/5 = 122 . . . . . divide by 5

  A = 2B = 244 . . . . . . . .find A from B

  C = A+30 = 274 . . . . . find C from A

Box A weighs 244 pounds; box B weighs 122 pounds; box C weighs 274 pounds.

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Answer: 213

Step-by-step explanation: The median is the middle number

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So let's start with writing ur data set from least to greatest.

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Notice that there are two middle numbers.

If there are two middle numbers in the data set,

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3 years ago
A metal shipping container is being used to transport clothes overseas. It will have a volume of 640 cubic feet. If the length o
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Answer:

C. 128ft

Step-by-step explanation:

it's C because whenever it says and you're supposed to multiply always remember that :) = (which means area ofc) you're finding the so you multiply 16x8 and the you get your answer (: ignore the 640 you just focus on the 16 and 8 ok? 16x8=128! :))

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3 years ago
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x = 30

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7 0
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Step-by-step explanation:

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3 years ago
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Mila [183]

Answer:

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Therefore, the coefficient of x^2 is -9.

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