Answer:
Step-by-step explanation:
Let's solve x^2 - 2x + 2 = 0 using "completing the square:"
1. Take the coefficient of x: It is -2.
2. Halve this, obtaining -1.
3. Square this result, obtaining 1.
4. Add 1, and then subtract 1, between -2x + 2:
x^2 - 2x + 1 - 1 + 2 = 0
5. Rewrite x^2 - 2x + 1 + 1 = 0 beginning with the square of a binomial
(x - 1)^2 + 1 = 0, or (x - 1)^2 = -1
6. Take the square root of both sides, obtaining x - 1 = ±i, or x = 1 ±i
7. Write out the roots: they are x = 1 + i and x = 1 - i (two complex, different roots). No real roots, so the last command of this question is irrelevant. The graph never touches the x-axis; the graph is in Quadrants I and II and is that of a parabola that opens up.
85.7 miles per hour. divide 600 by 7 to get a one hour rate
Answer:
5x-1
Step-by-step explanation:
f(x) = 3x-2
g(x) = 2x+1
(f+g) (x) = 3x-2 + 2x+1
Combine like terms
= 5x -1
I think it's a profit or a lone.
Answer:
Choice A
Step-by-step explanation:
Choice A: $1.49/6 oz = $0.248/oz
Choice B: $3.59/13 oz = $0.276/oz
Therefore, Choice A is the lower price per ounce.
