And explain your answer ! houston elementary school is selecting students to be in the winter festival show. there are 4 roles left but there are 12 students interested in the roles. how many combinations of the twelve students can be chosen for the four remaining roles? a. 505 b.495 c.48 d.16

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?