A bag contains 3 red marbles and 3 blue marbles. What is the probability that the first marble drawn is red and the 2nd marble drawn is blue?

there are a total of 7 marbles

Step-by-step explanation:

The chance of the first marble being blue is 4/7. Now we only have 6 marbles in the bag (3 red and 3 blue)

The chance of the second marble being blue is 3/6

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c