HURRY PLEASE HELP. READ QUESTION THEN SOLVE. What could you multiply the FIRST equation by in order to solve this system by elimination?

x+7y=5
5x+4y=-6

Acompany is making new soccer uniforms for a team. the company uses 2.5 yards of fabric for each shirt. the company uses 82.5 yards of fabric to make shirts and shorts for 15 players. the equation and solution below represents the situation. 15(2.5+x)=82.5; x=3 what does the solution, x=3, represent?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48