Joshua is holding a book near shoulder-height. Use the
drop-down menus to indicate what happens to the
gravitational potential energy of the book if he places it
on each shelf.
shelf A
shelf B
shelf C
B
Intro
Done

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

yes. we do proportions in probabilities.

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.