What is the vertex of (2x)(x-11)

Step-by-step explanation:

let : f(x) =2x(x-11)

f(x) = 2x²-22x           standard form   when :  a=2  and b= -22 and  c=0

the fertex is : ( -b/2a , f(-b/2a))

-b/2a = -(-22) /4 = -11/4

calculate f(-11/4) = 2(-11/4)²-22(-11/4) =continu

what i would say the best answer is a. 40.5

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it