The formula S= 30fd can be used to estimate the speed, s, in miles hour that a car is traveling when it goes into a skid, where f is the coefficient of

friction and d is the length of the skid marks in feet.

per

On a busy highway with a speed limit of 70 mi/h, a truck ahead of Verna jackknifes

across the road. Verna skids to a stop 10 ft short of the truck. Her skid marks

measure 260 ft. Was Verna speeding?

No; her speed was only 63 mi/h.

Yes: her speed was 73.9 mi/h.

Yes: her speed was 75.3 mi/h

No: her speed was 70 mi/h

a

step-by-step explanation:

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation:

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13