Step-by-step explanation:
1. You first do what’s in the parentheses (in this situation, there are none)
2. Second, exponents (again, there are none)
3. Third, any multiplication or division (whichever comes first) from left to right (-25 x 0 =0)
4. You now have 50+50-0+2+2
5. Fourth, you do addition and subtraction from left to right, 50+50 = 100
6. Now you have 100-0+2+2
7. This gives you the correct answer of 104
Answer:
0.0062 = 0.62% probability that a randomly selected truck from the fleet will have to be inspected
Step-by-step explanation:
Z-score
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:
![Z = \frac{X - \mu}{\sigma}](https://tex.z-dn.net/?f=Z%20%3D%20%5Cfrac%7BX%20-%20%5Cmu%7D%7B%5Csigma%7D)
The Z-score measures how many standard deviations the measure is from the mean. 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 get the probability that the value of the measure is greater than X.
What is the probability that a randomly selected truck from the fleet will have to be inspected?
Values of Z above 2.5. So this probability is 1 subtracted by the pvalue of Z = 2.5.
Z = 2.5 has a pvalue of 0.9938
1 - 0.9938 = 0.0062
0.0062 = 0.62% probability that a randomly selected truck from the fleet will have to be inspected
Answer:
-7y+8x
Step-by-step explanation:
-2y-x-5y+9x
The answer is 48 because you have to do is 21 x 4 which is 48