Answer:
57.375
Step-by-step explanation:
Multiply then move the decimal
Answer:
Undefined
Step-by-step explanation:
This equation is just a vertical line, so the slope is undefined.
Answer:
B and D
Step-by-step explanation:
B and D are the only linear functions as the respected differential variable or c in this case, and the product variable, y in this case, have an exponent = 1. All the others have a quadratic term or an x^2
Answer:
The standard deviation of the speeds of cars travelling on California freeway is 6.0088 miles per hour.
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.
In this problem, we have that:
Suppose that the speeds of cars travelling on California freeways are normally distributed with a mean of 61 miles/hour. This means that
.
The highway patrol's policy is to issue tickets for cars with speeds exceeding 75 miles/hour. The records show that exactly 1% of the speeds exceed this limit. This means that the pvalue of Z when
is 0.99. This is 
So





The standard deviation of the speeds of cars travelling on California freeway is 6.0088 miles per hour.
Answer:
Brock is lying.
Step-by-step explanation:
Brock is lying because 4^-2 = 1/4^2 = 1/16 of a second!! (He'd have to hold on to a rocket to do 100 meters in that time!!).
Jim's time of 4^2 = 16 seconds is believable.