Area=l*b=l*(l-2)=80(given)
so, l^2 - 2l =80
l^2 - 2l - 80=0
l=10 or -8
l=10,b=10-2=8
perimeter=2(l+b)=2(18)=36
Answer:
the answer is B because it has only one unknown and also it is a linear equation so it will have only one answer which is (2 )
Answer:
40
Step-by-step explanation:
11x+13=90
11x=77
x=7
49-9=40
