3x+x+20 = 180
4x = 180-20
4x = 160
x = 40
×+20+3x+2x+38+C=360
40+20+3×40+2×40+38+C=360
40+20+120+80+38+C=360
298+C=360
C=360-298
C =62°
Answer:
19
Step-by-step explanation:
79÷4=19R3
≈ 19
For an exponential distribution, the standard deviation is equal to the mean.
(a) the standard deviation is 4 miles.
f = (f1 f2) / (f1 + f2)
f(f1 + f2) = f1 f2
f f 1 + f f 2 = f1 f 2
f1 f2 - f f2 = f f1
f2 (f1 - f) = f f1
f2 = (f f1) / (f1 - f) <==== solution
Answer:
I believe it is A -2.... If you see where they are each plotted and multiply them which is 1 and -2 you would get -2.. Hope that helps.
