I believe you are right with all of them.
<h2>
Answer:</h2>
The following which is not a requirement of a standard form of equation Ax+By=C is:
b) B ≥ 0
<h2>
Step-by-step explanation:</h2>
We know that the standard equation of a line is given by:

where A,B and C are integers and A is taken to be a non-negative integer i.e. (A≥0) also the greatest common factor of A,B and C is: 1.
Also A and B can't be both zero.
Hence, the correct option is:
Option: b
Answer:
1/10
Step-by-step explanation:
P(a successful member
had Bertha as her trainer) = P(Bertha being you trainer) x P(being successful if
trained by Bertha)
= 1/3 x 30/100
= 30/300
= 1/10