Answer:
6666666.667 equals x
Step-by-step explanation:
take the 3 to the other side- doin that is became positive
them you divide to find x
Answer:
?
Step-by-step explanation:
Answer:
Weights of at least 340.1 are in the highest 20%.
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

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.
In this problem, we have that:

a. Highest 20 percent
At least X
100-20 = 80
So X is the 80th percentile, which is X when Z has a pvalue of 0.8. So X when Z = 0.842.




Weights of at least 340.1 are in the highest 20%.
It is False.
If a property is commutative in subtraction it means: x - y is the same as y - x.
For example 5 - 3 = 2, but 3 - 5 = -2 so subtraction is not commutative.
But 5 + 3 = 8 , is the same as 3 + 5 = 8.
Addition is Commutative, but Subtraction is not commutative.
So the statement that subtraction of whole numbers is commutative is False.