A wheelchair ramp in front of a local restaurant has a length of 21 feet, measured from the foot of the ramp to the door. The horizontal distance from the foot of the ramp to the door is 20.7 feet. To the nearest tenth of a foot, how high is the top of the ramp off the ground? 3.0 feet
3.3 feet
3.5 feet
4.0 feet

idkit the do u know da way and ligma consumed ninja

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