What is the x value of the vertex of f(x) = 2x^2 - 4x + 9

(1, 7)

Step-by-step explanation:

a = 2, b = -4, c = 9

x = -b/2a

x = 4/2(2)

x = 1

plug 1 in for 'x' into 2x² - 4x + 9 to get the y-value

2(1) - 4(1) + 9

2 - 4 + 9 = 7

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )