The answer is 9
both 81 and 63 are dividable by 9, and nothing higher
Parallel lines<span> are coplanar </span>lines<span> that do not intersect</span>
The answer is the answer is C and F.
This is found by inserting the equation above into the quadratic formula or -b plus or minus the square root of b^2 - 4ac over 2a.
With that, you find that the first number is a -3, which eliminates choices B and D.
Then, solving the 4ac portion, you find that inside the square root the number is 29, which gives you the last two answer choices.
Hope this helps!
Answer:
2
Step-by-step explanation: