Simplify and determine the coefficient of (- x)(3y)(-2x).

Find the value of the cosine for angle a

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.