The answer is
C.
Adding any positive value to

won't really make

into a rational number, so the way you have to do it add the negative self, -

to make it into 0. Any number plus its negative value would result in 0, which is a rational number.
Answer:
a = 0.5 or 1/2
b = 19/4 or 4.75
Step-by-step explanation:
Step 1: Isolate <em>x</em>'s
x² - x = -5
Step 2: Complete the Square
x² - x + 1/4 = -5 + 1/4
(x - 1/2)² = -19/4
Step 3: Move everything to one side
(x - 0.5)² + 4.75
Answer should be 22= 11x2 11= 11x1, something like that :)
#6 is incorrect
it's 6 7/8
#7 is correct
Answer: EDIT: the answer is 4 3/12
Step-by-step explanation:
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