Louis spent 12 hours last week practicing guitar. if 1/4 of the time was spent practicing chords, how much time did louis spend practicing chords?

Evaluate the expression. (9 + 5)(3 + 2)0

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.