If using the method of completing the square to solve the quadratic equation x^2 - 13x + 31 = 0, which number would have to be added to "complete the
square"?

.5 lb

step-by-step explanation:

12 in / 6 in =2 in

.25 x 2 = .5 lb

"if it is my birthday, then it is snowing"

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

the answer is 99.