13. Find the vertex of f(x)=x2 -6x +8 .
1 answer:
9514 1404 393
Answer:
a (3,-1)
Step-by-step explanation:
The number that "completes the square" is the square of half the x-coefficient, (-6/2)^2 = 9. Rearranging the given function to include the square trinomial, we have ...
f(x) = x^2 -6x +9 -1 . . . . . . . here, we have 8 = 9 - 1
f(x) = (x -3)^2 -1 . . . . . . . . . . vertex form
Comparing this to the generic vertex form ...
f(x) = (x -h)^2 +k . . . . . . . vertex at (h, k)
we see that h=3 and k=-1.
The vertex is (h, k) = (3, -1).
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Answer:
Yes, they are being underrepresented.
Step-by-step explanation:
Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.
The Population of African Americans in St. Louis suburbs 5.7% . Therefore we can assume that the school system should have about 5.7% of their teachers being African Americans. Since we are given the amount of total teachers and the amount of African American teachers in the school, we can calculate the percent of African American teachers by using a simple Rule of Three property (demonstrated in the picture below).
405 Total teachers ⇒ 100%
15 African American ⇒ x
We can see that approximately 3.7% of the School Teachers are African Americans, So we can say they are being underrepresented.
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