Answer:
I belive it is 4 but im only 78% sure
Step-by-step explanation:
Let x be the width of the sidewalk and the area becomes:
A=LW and L=6+2x and W=4+2x now we have
A=(6+2x)(4+2x) and we are told that A=48ft^2
48=24+20x+4x^2
4x^2+20x-24=0
4(x^2+5x-6)=0
x^2+5x-6=0
x^2-x+6x-6=0
x(x-1)+6(x-1)=0
(x+6)(x-1)=0
So x=-6, 1, however since x is a measurement it must be positive thus
x=width=1 ft is the only possible solution.
Answer: 11/20 = 55% and Grid A
Step-by-step explanation:
By doing 11/20 and making the denominator 20 into 100 by multiplying it by 5 we can get 55/100 which is 55%. And by simply counting the squares on the grid we can see 55 squares are shaded and the other 45 aren't showing its 55% shaded.
