Given: △abc, ab=5sqrt2
m∠a=45°, m∠c=30°
find: bc and ac

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?