What Is 2+4? I need to know.

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

80 points suppose marcy made 45 posts online. if 23 of them contained an image, what percent of her posts had images? round your answer to the nearest whole percent. 54 percent 51 percent 49 percent 48 percent