A construction company is pouring cement for a rectangular sidewalk. The dimensions of the sidewalk. The dimensions of the sidewalk are 3.5 feet by 42 feet. What is the area of the sidewalk A) 98 sq ft

B) 126 sq ft

C) 147 sq ft

D) 294 sq ft

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?

2: 10

step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0