Answer:
X Y and Z are the variables.
Step-by-step explanation
Rewrite it into vertex form with completing the square:
f(x) = x^2 - x + 2 = (x^2 - x) + 2 = (x^2 - x + 1/4) + 2 + 1/4 = (x - 1/2)^2 + 9/4;
So the vertex is (1/2, 9/4).
Answer:
x = 6
Step-by-step explanation:
Triangle BCD: cos(60) = x/BC => BC = x/cos(60)
Triangle ABC: sin(45) = BC/6√2 => BC = (6√2)sin(45)
so x/cos(60) = (6√2)sin(45)
x/(1/2) = (6√2)(√2/4)
x/2 = 12/4
x = 2(3)
x = 6
A They both do in fact concave down.
True because just plug in (1,3) for x and y and solve it out.
Plugging it in gives you 2(1)-3(3)=-7 which simplifies to 2-9=-7, which is true.