Slope is the change in Y over the change in X:
Slope = (6 - -8) / (5 - -3)
Slope = (6+8) / (5+3)
Slope = 14/8
Slope = 7/4
For an exponential distribution, the standard deviation is equal to the mean.
(a) the standard deviation is 4 miles.
Marcel leaves 30 minutes after Carolyn, leaving between them a gap of 40mph*0.5h=20miles
To catch up with the 20miles, Marcel uses the extra (65-40=25)mph that he has.
Therefore 20m/25mph=0.8h=0.8*60min=48minutes after 2:45, which is at 3:33, Marcel catches up to Carolyn.
C. 12 nickels and 9 dimes.
This is the only one that adds up to 1.50
So the total width across is 98*2=196 inches in width!
if 1 yard is 36 inches
196 inches will be----> 196/36=5.44 yards
