If S is the midpoint of RT, RS=5x+17, and ST=8x-31, find RS

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

2.5 milligrams is equivalent to how many grams