Answer:
a, d
Step-by-step explanation:
A direct variation graph will just have points going in a straight line.
The only graphs with a straight line are (a) and (d).
In order to subtract one fraction from another, we need to make the denominator the same in both fractions. The lowest common denominator is 8, because 4 is a factor of 8.
In order to make the denominators the same, multiply both the numerator and denominator of 13/4 by two. This keeps the value of the fraction the same, but will equate the denominators.

At this point, we can simply subtract 5/8 from 26/8.

21/8 cannot be simplified, so it is the answer.
Answer:
Step-by-step explanation:
- 2/(5 - √3) =
- 2(5 + √3)/(5 - √3)(5 + √3) = multiply by conjugate of the denominator
- 2(5 + √3)/(25 - 3) = simplify
- (5 + √3)/11 answer