b= 1/2
perpendicular slopes are those that are opposite signs and reciprocal of the original given slope
Answer:
-.8
Step-by-step explanation:
ok so if you divide -16 by 20 you will get -0.8
and if you divide 20 by -25 your answer also be -0.8
they are equal
If (55 + x)/2 is to be 67, then 55+x = 2*67, so x = 2*67 - 55 = 79