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Area of a triangle is 1/2 * base * height - Base here is 4 units (X intercept)
So solving for height , absolute height = 6
Since a +ve slope line having a X-intercept at 4 can only have a -ve Y intercept (graph it to see), the answer is -6
- by manfromohio
Tue Dec 22, 2009 10:46 am- Forum: Problem Solving
- Topic: triangle and coordinates problem
- Replies: 3
- Views: 1479
IMO the answer is 1/3. (E) Logical explanation: Since both have an equal chance of picking any of the 3, the game is equally likely to favor all possible outcomes - 1/3 Jim Wins, 1/3 Renee wins and 1/3 stalemate (same sign picked by both) Quant: chance jim wins = Pr.(Jim=Rock) X Pr(Renee=scissors) +...
- by manfromohio
Tue Dec 22, 2009 10:39 am- Forum: Problem Solving
- Topic: Probability Jim will Win
- Replies: 4
- Views: 2966