Janai has a piece of large construction paper that is 10 inches long. She cuts the paper into 13 equal pieces. How long, in inches, is each piece of the paper? Express your
answer as a fraction.

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

with btw u said 100pts but it clearly says

i answerd and just got 10pts

no hate

the answer is 62.8 cubic units

step-by-step explanation: