Answer:
54
Step-by-step explanation:
since n = 3
= -2n ( 5n+n-8-3n)
= -2 (3) ( 5+(3)-8-3(3) )
= -6 (5+3-8-9)
= -6 (5-5-9)
= -6 (-9)
= 54.
Answer:
Step-by-step explanation:
4x^2+4x+1
Answer:
20n
Step-by-step explanation:
Multiply square feet per person times the number of persons to find square feet.
The units analysis looks like this:

Answer:
3
Step-by-step explanation:
The semicircle doesn't have any sides and the dotted lines are just there as an image for u.