First add all the numbers together which is 125 the divide it by 5 because there is 5 numbers and your answer would be 25
-15/5 = -3
15/(-5) = -3
15/(-5) = -3
(-15)/(-5) = 3 (because if a negative divides a negative, it becomes positive)
a=2
Answer:
(m1) slope of DE=(7-1)/(10-a)=6/(10-a)
(m2) slope of EF=(11-7)/(7-10)=4/-3=-4/3
since line are perpendicular
m1m2=-1
6/(10-a) ×-4/3=-1
6/(10-a)=3/4
6×4=3(10-a)
24=30-3a
3a=30-24
a=6/3=2
3.75 pounds in 60 ounces. :)
