What is the measure of angle A?

angle a + 15° + 38° = 180° [ Linear pair]

a + 53° = 180°

So, a = 127°

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation:

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