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alekssr [168]
3 years ago
12

How to solve -14x-11y=97 and -12y+11x=27 for x and y

Mathematics
1 answer:
jeka943 years ago
4 0
I do not know for sure but im almost 100% sure that the answer is y=97 and x=1.08 i hope that is correct and that it helps you out.
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A delivery truck is transporting boxes of two sizes: large and small. The combined weight of a large box and a small box is 60 p
boyakko [2]

Answer:

  • large: 40 lbs
  • small: 20 lbs

Step-by-step explanation:

A system of equations can be written for the weights of the boxes based on the relationships given in the problem statement. One equation will be for the total weight of 1 large and 1 small box; the other will be for the total weight of 70 large and 60 small boxes.

Let L and S represent the weights of Large and Small boxes, respectively. The system of equations is ...

  L + S = 60 . . . . . . combined weight is 60 lbs

  70L +60S = 4000 . . . . weight of boxes in the truck

__

We can solve this by substituting for s in the second equation.

  70L +60(60 -L) = 4000

  10L = 400 . . . . . . . . . subtract 3600, simplify

  L = 40

  S = 60 -L = 20

A large box weighs 40 pounds; a small box weighs 20 pounds.

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3 years ago
Common factor of 10 and5
emmasim [6.3K]
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If f(x) = 2x – 6 find f(7) - 9. *
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Answer:

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Step-by-step explanation:

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f(x) = 8

Now subtract 9 from 8.

8 - 9 = -1

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How to convert fractions to decimals video?
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