Find the solution to the system by the substitution method. Check your answer. -x+7y= -44
5x-y= 50

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.