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.
Only a guess but 69.5 7
9
Answer: 1/8
Step-by-step explanation:
1/2 x 1/4 = 1 x 1/2 x 4
Answer:
<h3>
x = 2</h3><h3 />
Step-by-step explanation:
use Pythagorean theorem:
a² + b² = c²
where a = x
b = 8/2 = 4
c = √20
plugin values into the formula:
x² + 4² = (√20)²
x² + 16 = 20
x² = 20 - 16
x = √4
x = 2