(3/20)^3
27/8000
..............
Answer:
I think it is A and D but i'm sorry if i'm wrong
Step-by-step explanation:
Answer:2x
Step-by-step explanation:
Answer:
Step-by-step explanation:
Each equation is in vertex form, so you can easily determine the number of real roots. The leading coefficient tells you whether the parabola opens upward (positive) or downward (negative).
y = a(x -h)^2 +k
has leading coefficient "a" and vertex (h, k).
__
<u>f(x) = 1/3(x +5)^2 +7</u>
vertex: (-5, 7), opens downward
The vertex is above the x-axis, so there are two real roots.
__
<u>f(x) = -5(x -3)^2</u>
vertex: (3, 0), opens downward
The vertex is on the x-axis, so there is one real root.
Answer:
The first choice is correct, because it is the only one that has -2 as it's x-coordinate. :)
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