Question

B=(x/x2=9 and 3x=7) is an empty set or not​

Answer 1

Answer:

yes it is an empty set. hope it is right

Answer 2

Step-by-step explanation:

B=(x/x2=9 and 3x=7)

B={x:x²=9}

x²=9

taking square root on both sides,

x=3

B={3}

therefore,set B is not a empty set. because one element is there.

B={3x=7}

3x=7

x=7/3

x=N

B={}

therefore,set B is a empty set. because no one element is there.