Mr. boudreau completed a 5k marathon. ⅔ of the distance, mr. boudreau completed on foot. of the time he spent on foot, ¾ of the distance he ran, ¼ he walked. the rest of the marathon mr. boudreau took an uber.

how much of the marathon did mr. boudreau run?
how much of the marathon did mr. boudreau walk?
how much of the marathon did mr. boudreau travel by uber?

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.

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0