Answer:
20
23 is between 20 and 30, but it's closer to 20. So 23 is rounded down to 20.
Let's call he width of the notebook w and the length l
w*l=80
2(w+l)=36
w+l=18
w=18-l
(18-l)*l=80
-l^2+18*l-80=0
l=8 or 10
Therefore, the notebook is 8 by 10 inches
Answer: The piece of wood will be 23.2 in. long
Step-by-step explanation:
5.8 multiplied by 4 is 23.2
Answer:
-36
Step-by-step explanation:
le x be 2 then
f(x) = -2-2 =-4
g(x)= 2square +1-2 =3
to find:(f×g)(3)
(-4×3)(3)
=-36
Answer:
y= 9x -66
Step-by-step explanation:
