If n= 4, the value of the expression 28-12+ 2 is

OK

n = 4 Please upload a picture of this problem

Well, I think this expression is incomplete

The possible solution would be

28 - 12 + 2 = 30 - 12

= 18

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

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true