Answer:
Answer and explanation with steps are in the following attachments
Step-by-step explanation:
Answer:
slope or line segment z to x:
4/6x Or 2/3x
Step-by-step explanation:
Answer:
99.38%
Step-by-step explanation:
We have that the mean (m) is equal to 124, the standard deviation (sd) 6.4 and the sample size (n) = 64
They ask us for P (x <126)
For this, the first thing is to calculate z, which is given by the following equation:
z = (x - m) / (sd / (n ^ 1/2))
We have all these values, replacing we have:
z = (126 - 124) / (6.4 / (64 ^ 1/2))
z = 2.5
With the normal distribution table (attached), we have that at that value, the probability is:
P (z <2.5) = 0.9938
The probability is 99.38%
Kim drives = x
Terry drives = 2x
Jerry drives = 6x
Let us go through our answer choices and choose one.
A is incorrect because we are not being asked to add anything.
B is incorrect because it equals what all of the drivers drive.
2(x+3)
2*x + 2*3
2x + 6x
C is incorrect because we are not being asked to subtract.
D is correct because Jerry drives 3 times as much as terry.
2x*3
6x
So our final answer is D. 6x
Answer:
125.8983
Step-by-step explanation:
Use the formula for volume of a cone: v= (1/3)(3.14)(radius squared)(height) so v = (1/3)(3.14)(20.25)(6) = 125.8983