Rico thinks it’s a perfect square trinomial. teresa says it’s the difference of two squares. who is correct

Step-by-step explanation:

The proportion of students who like both building snowmen and skiing

50/110

percent is 50/110 * 100 = 45%

part b)

Of the students who don't like building snowmen,

what is the probability of choosing a student who does not like skiing as well?

There are 50 students who don't like building snowmen.

There are 20 students who don't like skiing and don't like building snowmen.

probability is is 20/50 = 2/5