Answer:
k = 5
Step-by-step explanation:
Subtract both sides by 1/2:
k/2 = 5/2
Multiply both sides by 2:
k = 5
Answer: There are 64 relations from A to B.
Step-by-step explanation:
Number of relation from set A to B = 

Since, A={Φ,{Φ},{Φ,{Φ}}} and B={1,2}
i.e. Number of elements in set A = 3
Number of elements in set B = 2
So, Number of relation from set A to B = 

Hence, there are 64 relations from A to B.
Answer:
x=6
Step-by-step explanation:
x+1
-------
x-6
The expression is undefined when the denominator is zero
x-6 =0
Solving for x
x+6-6 =0+6
x=6
Answer:
B. 15"
Step-by-step explanation:

The answer for the question is C