each student in a gymnastics class tries 20 times to do a cartwheel on the balance beam without fallin off their teacher records the number of times each student succeeds in the list below which histogram correctly represents the set of data

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle

If your asking how much altogether for 12 performance the answer will be 98,496.