Answer:
5
Step-by-step explanation:
We desire to evaluate the fraction:
when k=3.
This is a simple substitution, so what is required is
- Replace k with the given number
- Simplify the resulting expression
Therefore, when k=3

You can try the same for any value of k.
Answer:
2
Step-by-step explanation:
7x - 2x = 13 - 3
5x = 10
x = 2
The answer would be 73 degrees because 62 +12 = 73
It is C. It is not possible to fold the shape about a line so that the two halves fit exactly on to of one another.