Find the value of b such that the system of equations does not have a solution. bx - 20y = -11
-6x – 15y = 11

b=

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

the answer is 13 cm

.95

step-by-step explanation: