If X > 0 then X must be a positive number. If Y < 0 then Y must be negative. So the quadrant that contains Positive X values and negative Y values will contain the point that you are looking for. This would be the fourth quadrant.
9+4 = 13 total balls
1st pick would be 9/13 probability of picking yellow
2nd pick would be 4/13 probability
3rd pick would be 4/13 probability
total probability : 9/13 * 4/13 * 4/13 = 144/2197
The correct answer is letter F
Whats the original price or the discount price ?
I think you’re asking why 10 is there when you when from _/100? if so it’s because 10 is the square root of 100. 10 x 10 = 100. similar to how the square root of 4 is 2 and 25 would be 5. or 16 is 4.