Answer:
4L-12
Step-by-step explanation:
let's assume the length = L
then the width of the rectangle is L - 6
perimeter = 2× (a+b)
where "a" and "b" are the length and the width of the rectangle.
so perimeter = 2× (L + L - 6)
2 × ( 2L - 6)
4L - 12
It should be 21 20. Sorry if I got it wrong
X1=2-Square root 5 x2=2+ Square root 5
B is the y-intercept. b = 82
WORK:
72 = -2(5) + b
72 = -10 + b
+10 +10
82 = b or b = 82.
