Petrolyn motor oil is a combination of natural oil and synthetic oil. it contains 5 liters of natural oil for every 3 liters of synthetic oil. if 255 liters of natural oil are used, how many liters of petrolyn oil will be made?

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?

Which expression is not a polynomial?

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish