chemistry 120°, physics 90° biology 80°and mathematics all in a pie chart. shows the distribution of students in A-level classes in a certain school, if 28 students offered mathematics, how many students were all together in the Four classes?

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Ihave trouble finding the nth term of a linear sequence