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kozerog [31]
3 years ago
12

I need the answer to number 39.

Mathematics
1 answer:
OLga [1]3 years ago
7 0
To find the number of hours you have to 9 hours and 30 minutes by three because it say how many hours did he play each day and it says three days.
So 9 hours and 30 minutes equal to 570 minutes. Divide 570 three times to get 190. Now how many hours are in 190 minutes? The answer is C. 3 hours and 10 minutes I hope this helps
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Mrs. DeMarco wants to estimate the length of her porch so she knows how much paint to buy. What is the best benchmark for her to
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The answer c ,I hope I’m right
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Solve for x. Picture attached <br><br> Show your work please!!!
Iteru [2.4K]
The answer is going to be x=22

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Read 2 more answers
What is the total area of this pyramid?​
dem82 [27]

Answer:

17.71

Step-by-step explanation:

7 0
3 years ago
You salary 25000 with 2.5 increase
Readme [11.4K]

Answer:

25,625

Step-by-step explanation:

If your current salary is the 100%, and you get a 2.5% increase, that means the new salary would be 102.5% of 25,000. This percentage could also be written as 1.025, which you would multiply to 25,000 to get your new salary.

1.025 · 25,000 = 25,625

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4 0
2 years ago
A firm’s marketing manager believes that total sales for next year will follow the normal distribution, with a mean of $3.2 mill
klasskru [66]

Answer:

The sales level that has only a 3% chance of being exceeded next year is $3.67 million.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

In millions of dollars,

\mu = 3.2, \sigma = 0.25

Determine the sales level that has only a 3% chance of being exceeded next year.

This is the 100 - 3 = 97th percentile, which is X when Z has a pvalue of 0.97. So X when Z = 1.88.

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

1.88 = \frac{X - 3.2}{0.25}

X - 3.2 = 0.25*1.88

X = 3.67

The sales level that has only a 3% chance of being exceeded next year is $3.67 million.

7 0
3 years ago
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