Answer:
Step-by-step explanation:
c/16=3/8
c=3(16)/8
c=48/8
c=6
a. Let be a random variable representing the weight of a ball bearing selected at random. We're told that , so
where . This probability is approximately
b. Let be a random variable representing the weight of the -th ball that is selected, and let be the mean of these 4 weights,
The sum of normally distributed random variables is a random variable that also follows a normal distribution,
so that
Then
c. Same as (b).
Answer:
72
Step-by-step explanation:
You would first change 25% to 0.25
Then divide 18 by 0.25 (18/0.25)
Which equals 72
Answer:
5/3 and y -9 = 5/3(x - 2)
5/3 and y - 4 = 5/3(x + 1)
Step-by-step explanation:
To write the equation of a line, calculate the slope between points (2,9) and (-1,4). After, substitute the slope and a point into the point slope form.
Substitute m = 5/3 and the point (2,9) into the point slope form.
You could choose to use the other point (-1,4). Repeat the same process substituting m = 5/3 and the point (-1,4).
Answer:
15
Step-by-step explanation:
a right angle is 90 degrees, so if you divide that by 6 you get one sixth of the angle