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uranmaximum [27]
3 years ago
10

Does anyone have the answer key to these proofs? They are Mrs. E Teaches Math introductory proofs. There are 14 total. I've done

1-9.​

Mathematics
1 answer:
nasty-shy [4]3 years ago
6 0

Statement 1:  2AB = AC

Reason 1: Given

--------------------------------------------

Statement 2:  AC = AB+BC

Reason 2: Segment addition postulate (which your teacher abbreviated to "Seg + Post")

--------------------------------------------

Statement 3: 2AB = AB+BC

Reason 3: Substitution

--------------------------------------------

Statement 4:  2AB-AB = AB+BC-AB

Reason 4: Subtraction Property of Equality

---------------------------------------------

Statement 5: AB = BC

Reason 5: Combine like terms

----------------------------------------------

Notes:

  • The first reason is "given" since we just simply restate what the instructions provide. If you are given multiple items, you list each one at a time.
  • The segment addition postulate is where we break a line into smaller parts and then build it back together.
  • Substitution is simply replacement. We've replaced AC with 2AB.
  • The subtraction property of equality is the idea where we subtract the same thing from both sides. In statement 4, we're subtracting AB from both sides.
  • The last statement of any proof is always the thing we're trying to prove. Once we reach such a statement, there's no need to go any further since the proof has concluded.
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saul85 [17]

Answer:

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Step-by-step explanation:

Rate of change = rise/run = -5/6

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