Answer:
r = 3
Step-by-step explanation:
Slope of a line passing through two points
and
is given by the formula,
Slope 'm' = 
Slope of a line passing through (4, 2) and (r, -6) is 8.
8 = 
8(4 - r) = 8
4 - r = 1
r = 4 - 1
r = 3
Answer:
B
Step-by-step explanation:
4n = n + n + n + n
X=12
(10(12)-20) = 120-20 = 100
(6(12)+8) = 72+8=80
100+80 = 180
Answer:
43.9823
Step-by-step explanation:

Answer:
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