How do you know that substitution gives the answer to a system of equations?

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?

Why is x= 4 a solution to the proportion 14/x 56/1 6