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Mila [183]
3 years ago
6

Which types of reasons are not valid in a mathematical proof?

Mathematics
2 answers:
Anni [7]3 years ago
6 0
Yeah definetly A i agree
bulgar [2K]3 years ago
5 0
It's definitely A, gotta be.
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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 ...

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gives you ...

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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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