W=l-8
a=9
a=lw
9=(l-8)l
9=l²-8l
0=l²-8l-9
factor
0=(l-9)(l+1)
set to zero
l-9=0
l=9
l+1=0
l=-1, false length can't be negative
l=9
the length is 9 units long
Answer:
B
Step-by-step explanation:
I need help on this one too this stuff is hard sometimes
I think that D is the answer
Answer:
-4, -3, -2, -1, 0, and 1
Step-by-step explanation:
-2<n+3<=4
-2<n+3<5
subtracting, we get:
-5<n<2
So the possible values of n are -4, -3, -2, -1, 0, and 1.
