z varies jointly as x and y and inversely as w. if z = 16 when x = 5, y= 4 and w =10, find z when x =6, y = 8, and w = 12.​

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

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

A. s.a.! this is a similarity in right triangles. next (solve for x)a.) 12b.) 5c.) 12.5d.) [tex] 6\sqrt{3} [/tex]