Answer:
Step-by-step explanation:
2b^2 - 3b + 4a^2........a =-6 and b = 8
now we sub
2(8^2) - 3(8) + 4(-6^2)
2(64) - 24 + 4(36)
128 - 24 + 144
272 - 24
248 <==
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.
I'm pretty sure the third one is correct.
Answer:
A
Step-by-step explanation:
Option A is the correct answer.
This is true because looking at the two triangles, we discover that they are similar triangles.
As similar triangles,
1. Side TU is corresponding to side WZ and side TV is corresponding to side WY.
∴ TU/WZ = WY/TV
2. ∠T is corresponding to ∠W and ∠U is corresponding to ∠Z.
So, Option A is the statement that is true.
