Me asap : ( enter the number of rows needed and the number of seats that will be left over. rows extra seats

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

Aright triangle includes one angle that measures 30º. what is the measure of the third angle? a. 30º b. 90º c. 60º d. 130º

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?