If nicholas gained 22.25 pounds, but lost 5 3/4 pounds, how much wieght did he gain.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor