A family of parabolas satisfies the rule y = ax² + 2x + a. a) Express ax² + 2x + a in the form a(x + b)2 + c for real numbers b and c.

b) Give the coordinates of the turning point of the graph of y = ax² + 2x + a in
terms of a

c) For which values of a is ax + 2x + a a perfect square?

d) For which values of a does the graph of y = ax + 2x + a have two x-axis intercepts?​

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney

what is the model?

step-by-step explanation:

if the angular bisector of an triangle bisects the opposite side, prove that the other two sides are equal.