Answer:
y=-3
Step-by-step explanation:
5x+7y=-31
(-) 5x-9y+17
-----------------
16y=-48
------------
16 16
y=-3
Calculating the area and the perimeter The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle.
Answer:
7..the way you worded the options was confusing
Answer:
Right so SAS means side angle side and the alternate angle theory is that any opposite angle is equal and the sides on the shape are parallel and to be honest thats all i know hope it kind of elps
Step-by-step explanation: