Please help me answer this ty.
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Hey there!
First we have to
!
Now, we have to
our like terms
Once we solve all the
we get
Now, we have to
to each of your sides
Solve that part of the equation
Good luck on your assignment and enjoy your assignment
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First we have to
Now, we have to
Once we solve all the
Now, we have to
Solve that part of the equation
Good luck on your assignment and enjoy your assignment
~
Answer:
The probability that his bill will be less than $50 a month or more than $150 for a single month is 0.3728 = 37.28%.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean and standard deviation
, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.
A salesman who uses his car extensively finds that his gasoline bills average $125.32 per month with a standard deviation of $49.51.
This means that
Less than 50:
p-value of Z when X = 50. So
has a p-value of 0.0643
More than 150
1 subtracted by the p-value of Z when X = 150. So
has a p-value of 0.6915
1 - 0.6915 = 0.3085
The probability that his bill will be less than $50 a month or more than $150 for a single month is:
0.0643 + 0.3085 = 0.3728
The probability that his bill will be less than $50 a month or more than $150 for a single month is 0.3728 = 37.28%.
Negative exponents work the same as positive ones, except you have to consider the inverse of the base.
So, if for example , in the same fashion you have
So, negative exponents lead to a fraction with numerator 1 and denominator the same expression, but with positive exponent.
So, in your case, let's work with the inner parenthesis first:
Now, if we want to raise this to the negative two, we have