GIVING BRAINLIEST TO RIGHT ANSWER (WILL CHECK IF CORRECT) Which of the following shows the correct first step to solve x^2-16x=-21 by completing the square?

A) x^2 - 16x + 8 = -21 + 8
B) x^2 - 16x + 64 = -21
C) x^2 - 16x + 16 = -21 + 16
D) x^2 - 16x + 64 = -21 + 64

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?