Suppose a ball is dropped from the roof of a tall building, 290 m above the ground. The distance the ball falls after t seconds, ignoring air resistance, is given by d(t)=4.9t^2 (a) Fill in the table below, correct to 2 decimal places.

(b) From your answers in part (a), what does the instantaneous velocity at t=2 s appear to be?

answer: c i think

step-by-step explanation:

a 270° rotation about point p says on e d g e n u it y (had to space it out because it says it's a misspelling so i couldn't submit it

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