Answer:
8
Step-by-step explanation:
Fill in the variable value and do the arithmetic.

___
Of course, the fraction can be simplified first:

U is 6 that is the final answer
Answer:
A = 2 (on the left). 10 (on the right)
Step-by-step explanation:
Use pythgaros therom
Do 7^2 - 3^2 = 40
Do square root of 40 which equals the answer
Answer:
There is a 24.51% probability that he weight of a bag will be greater than the maximum allowable weight of 50 pounds.
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. The sum of the probabilities is decimal 1. So 1-pvalue is the probability that the value of the measure is larger than X.
In this problem
Suppose that the weights of airline passenger bags are normally distributed with a mean of 47.88 pounds and a standard deviation of 3.09 pounds, so 
What is the probability that the weight of a bag will be greater than the maximum allowable weight of 50 pounds?
That is 
So



has a pvalue of 0.7549.
This means that
.
We also have that


There is a 24.51% probability that he weight of a bag will be greater than the maximum allowable weight of 50 pounds.