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LuckyWell [14K]
3 years ago
12

help me please !! find the domain and range of the function represented by the graph. determine wether the domain is discrete or

continuous.

Mathematics
1 answer:
katrin [286]3 years ago
5 0

Answer:

Domain is the whole R and the range is R+. The domain is continuous

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What is the interest earned on $20,000 for five years, at an interest rate of 3% compounded daily?
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The final balance is $23,232.33.

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What is the value of 2/3(x -6) -y , when x= 9 and y=5/6?
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Answer:

Ã=7/6

Step-by-step explanation:

<em>2/3(x -6) -y </em>

<h3><em>put the value of x= 9 and y=5/6 </em></h3>

=2/3(9-6)-5/6

=2/3×3-5/6

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A salesman who uses his car extensively finds that his gasoline bills average $125.32 per month with a standard deviation of $49
tiny-mole [99]

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 \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

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 \mu = 125.32, \sigma = 49.51

Less than 50:

p-value of Z when X = 50. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{50 - 125.32}{49.51}

Z = -1.52

Z = -1.52 has a p-value of 0.0643

More than 150

1 subtracted by the p-value of Z when X = 150. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{150 - 125.32}{49.51}

Z = 0.5

Z = 0.5 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%.

3 0
3 years ago
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