F ( x ) = - 2 x² + 12 x + 5 = - 2 ( x² - 6 x ) + 5 = - 2 ( x² - 6 x + 9 - 9 ) + 5 =
- 2 ( x² - 6 x + 9 ) + 18 + 5 = - 2 ( x - 3 )² + 23
f ( x ) = a ( x - k )² + h ( the vertex form ), k = 3, h = 23.
a = - 2 < 0, that means the vertex coordinates ( 3, 23 ) represents a maximum.
50 is the number because it is a great number to compare it to.
I am pretty sure that the answer is 45
Answer: A=1/4 πd^2
Plug diameter into D solve for A
Step-by-step explanation:
Formula for area of a circle. Area = 1/4 pie•diameter squared