Answer:
in the picture above.
Step-by-step explanation:
I hope that it's a clear solution and explanation.
Goodluck.
Answer:
it should be 14.25
Step-by-step explanation:
Hello,
x= first number
y= second number
their sum is 56, so:
x+y=56
The first number is 2/5 of the second number, so:
Those are the two equations.
Answer:
a=-18
Step-by-step explanation:
3 (a+7) = −33
3a+21=-33
3a=-54
-54/3=-18
Answer:
3.84% of months would have a maximum temperature of 34 degrees or higher
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:
What percentage of months would have a maximum temperature of 34 degrees or higher?
This is 1 subtracted by the pvalue of Z when X = 34. So
has a pvalue of 0.9616
1 - 0.9616 = 0.0384
3.84% of months would have a maximum temperature of 34 degrees or higher