How many triangles exist with the given angle measures? 60 60 60

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.