Answer:
Arc length is 12436.8m
Step-by-step explanation:
arc length = 
* πD
where M is the angle measure of the arc
and D is the diameter
considering the earth as a circle and half the earth as a semi circle the angle measure of the arc will be = 180 degrees
* π * 7917.5 = 12436.8m
4. 2b-6+3b=
5b-6=143
5b=143+6
5b=149
b=149
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5
Possible derivation:
d/dx(3)
The derivative of 3 is zero:
Answer: = 0
If the number is negative than it is less than it's absolute value.
M = Y / X
m = [1 - (-2) ] / [2 - (-2)]
m = (1+2) / (2+2)
m = 3 / 4
Using (2,1)
y - yo = m (x-xo)
y - 1 = 3/4 (x-2)
Or
(-2,-2)
y + 2 = 3/4 (x+2)
D and F
