31.5 is what percent of 75?

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

What is the square root of 45? (step by step working plz)

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?