Answer:
20 % discount
Step-by-step explanation:
Lilian got 4 dollars off of the original price (20 - 16 = 4 )
4 / 20 * 100% = 20% off
Formula for perimeter a+b+a+b
12+5+12+5= 17+17= 34 .34=P
162 is not a perfect square therefore you have to find the largest perfect square that can go into 162 which would be 81.
The polygon is built of 7 triangles (picture).
The terms with the same variables is called like term
