Answer:
the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour
Step-by-step explanation:
The computation of the standard deviation of the speeds of cars is shown below;
The z score for the top 1% is 2.326
So,
= (75 - 61) ÷ standard deviation = 2.326
Standard deviation is
= 14 ÷ 2.326
= 6.0 miles per hour
Hence, the standard deviation of the speeds of cars travelling on California freeways is 6.0 miles per hour
Answer:
the probability that jose chose two blue marbles would be 8/20
Step-by-step explanation:
Consecutive numbers differ by one. So, if
is the first, the three numbers are

The sum of the first and third integer is

42 - 12x = 6
Solve for 6
12x = 36
x = 3
The angles have to have a 90 degree angle , and they have to be equal too