Describe and correct the error in solving for one of the variables in the Iinear system 4x+5y=-10 and 2x-4y=9

My favorite songstress gives away 25% of this side of her signature fragrance collection to her charity last month her sales were 1200 how much of her sales did she donate

Asap i need it now choose all the answers that apply. sex-linked disorders affect males more than females affect females more than males can be carried by females, without being expressed are always expressed in males are caused by genes carried on the x and y chromosomes

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