If x=7, determine which lines must be parallel?
1 answer:
Answer: All the lines which are parallel to Y-axis including Y-axis must be parallel to the line x=7.
Explanation:
We can understand it by drawing the line x=7 on the graph.
In the graph, it has shown that x=7 is parallel to Y-axis.
And if we talk about a set of lines x=n, where n is a real number then these lines are parallel to y-axis.
since, we know that if one line is parallel to another line and that line is also parallel to a third line then these three lines must be parallel.
so we can say that, All lines which are parallel to y-axis as well as y-axis are parallel to x=7.
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Answer:
22.96% probability that a hotel room costs between $250.00 and $285.00
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:
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:
What is the probability that a hotel room costs between $250.00 and $285.00?
This is the pvalue of Z when X = 285 subtracted by the pvalue of Z when X = 250. So
X = 285
has a pvalue of 0.7734
X = 250
has a pvalue of 0.5438
0.7734 - 0.5438 = 0.2296
22.96% probability that a hotel room costs between $250.00 and $285.00