I think the answer is 78 because more usually mean addition so 57+21=78
Answer with Step-by-step explanation:
We are given that
P(A)=0.4 and P(B)=0.7
We know that

We know that
Maximum value of
=1 and minimum value of
=0






It is not possible that
is equal to 1.1


Multiply by (-1) on both sides

Again, 



Multiply by (-1) on both sides

Hence, 
One number is 4 times the other, so x and 4x.
The sum of two numbers is 4x+x=70.
Solve for x to get
x=70/5=14
the other number is 4x=4*14=56
Perpendicular lines have slopes that are inverse reciprocals of each other. That would give you the new slope in your equation. After that plug (6,2) into point slope form and solve to get your final equation.