PLEASE HELP WILL GIVE BRAINLIEST antonio bikes 5 miles on his first day of training for a race . the next day, he increases his distance by 0.75 miles. the day after that he increases his distance biked by another 0.75 miles, and so on. what is the total number of miles antonio bikes over the course or 20 days?

41/2 - 1 1/3 what is the answer as a fraction?

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

What is the area of the triangle 10 13 12