The mode is the number that appears the most out of a given sequence. 30 appears the most. Our mode is 30. The median is the middle number of a list of numbers from least to greatest. I will organize it for you. 20, 25, 30, 30, 30, 35, 45, 50, 100. To determine the median the fast way, cross out the smallest number with the largest number until you can no longer do so. 20,25,30,30,30,35,45,50,100 25,30,30,30,35,45,50 30,30,30,35,45 30,30,35 30. Our median is 30. We do not need to figure out the mean, since we have found our answer; Our mode and our median are equivalent. I hope this helps!
It would be 15 because the way you would set it up is equal to 180 because they are opposite and they have to add up to 180 in order for the whole shape to be 360. so 3x+9x=180 and then 12x=180 and divide 180 by 12 which is 15 and you can also plug in 15 to check
