Answer:
x=2
Step-by-step explanation:
Original width = 6
New width 6+x+x
Orignal length 12
New length 12+x+x
A = l*w
160 = ( 6+2x) ( 12+2x)
Factor
160 = 2( 3+x) 2(6+x)
Divide each side by 4
40 = (3+x) (6+x)
FOIL
40 = 18+ 6x+3x+ x^2
40 = 18 +9x+x^2
Subtract 40 from each side
0 = x^2 +9x -22
Factor
0 = (x +11) (x-2)
Using the zero product property
x +11 =0 x-2 =0
x= -11 x=2
Since we cannot have a negative sidewalk
x =2
Answer:
The fact that the polynomial (3x2+4x+5) + (2x+6) yields a poloynomial, employs what property?
Step-by-step explanation:
The answer is a rotation, hope it helped :)
Answer:
The equation is 
Step-by-step explanation:
Observing the graph
Let
step 1
Find the slope m
step 2
Find the equation of the line into point slope form
with the point 
and the slope 
substitute
Answer:
Linear
Step-by-step explanation:
Both top and bottom are going up at a constant rate
x is going up by 9 and
y is going up by 7
