2/20 students generally drop the course before completing the introductory statistics course.
35
area of triangle is (base X height)/2
so it would be (14 X 5)/2
which is 70/2
which is 35
8 over 10 times by 100, and 11 over 15 times by 100 to find in percentage. Whichever number is bigger is your answer.
Probability AGAINST a spinner landing on green ...
if 3 are green, then 5 are not green...
5/8 = 0.625 rounds to 0.63 = 63% <===