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kodGreya [7K]
2 years ago
8

Heyy pls help with these math questions hurry!

Mathematics
1 answer:
horrorfan [7]2 years ago
7 0

Answer:

m=2/5, y=3x7, (7,0), y=x-2, (0,-2)

Step-by-step explanation:

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Answer:

  1. 30m +50 = 20m +100
  2. m = 5
  3. yes. symmetric property of equality.

Step-by-step explanation:

1. The expression for c in the first equation is (30m+50). Substituting that for c in the equation ...

  c = 20m +100

gives you ...

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__

2. Adding -50-20m to both sides gives ...

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  m = 5 . . . . . . . divide by 10

__

3. Doing the substitution in reverse, you would substitute (20m+100) for c in the equation ...

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to get ...

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This is the equation of part 1 with the expressions swapped to the other side of the equal sign. The symmetric property of equality tells you that changing sides of the equal sign does not change the value of the variable(s).

You get the same solution.

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