That is Proof by Contradiction.
The famous one is the proof of the square root of 2 is irrational . First done by Euclid
Answer: 15 mL
Step-by-step explanation:
Before the stone the reading was 180 mL
When the stone was added the reading rose to 195 mL
So, we subtract them both, this will give us the volume of the stone
195 mL - 180 mL = 15 mL
Hey!
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Solution:
So he got a 20% profit on $1.20.
20% of 1.20 → 0.2 x 1.20 → 0.24
Same thing goes with 20% loss.
20% of 1.20 → 0.2 x 1.20 → 0.24
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Answer:
On the sale of the pipes, he gained a profit of $0.24 and lost a profit of $0.24, so the sale is (a) broke even.
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Hope This Helps :)
