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marin [14]
3 years ago
6

Simone has 5 in her flower shop.Each employee works 6 4/15 hours a day how many hours in total do the 5 empoyees work per day?

Mathematics
1 answer:
kodGreya [7K]3 years ago
4 0
To figure out the total amount of hours an employee works, we have to multiply the total amount of employees by the amount of hours each employee would work. 

To simplify the mixed fraction of hours they work, convert the mixed fraction into an improper fraction:

6 \frac{4}{15}

Multiply the whole number by the denominator:

6 \times 15 = 90

Add this number to the numerator to convert the mixed fraction into an improper fraction:

90 + 4 = 94

6 \frac{4}{15} = \frac{94}{15}

Now we can multiply the two numbers together (note that a whole number can be treated as the number above the denominator 1):

5 employees working 94/15 hours a day:

\frac{5}{1} \times \frac{94}{15} = \frac{470}{15}

To simplify this fraction, divide the numerator by the denominator:

470 \div 15 = 31 R 5

The whole number stays as a number, and the remainder is the new numerator:

31 \frac{5}{15}

The fraction can be further simplified by dividing both the numerator and denominator by the greatest common factor:

Factors of 5: {1,5}
Factors of 15: {1,3,5,15}

\frac{5}{15} \div \frac{5}{5} = \frac{1}{3}

31 \frac{5}{15} = 31 \frac{1}{3}

The 5 employees will work a total of 31 and 1/3 hours a day.
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ale4655 [162]

Answer:

6.26-2.01\frac{2.47}{\sqrt{50}}=5.56    

6.26+2.01\frac{2.47}{\sqrt{50}}=6.96    

So on this case the 95% confidence interval would be given by (5.56;6.96)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the mean and the sample deviation we can use the following formulas:  

\bar X= \sum_{i=1}^n \frac{x_i}{n} (2)  

s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}} (3)  

The mean calculated for this case is \bar X=6.26

The sample deviation calculated s=2.47

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=50-1=49

Assuming a Confidence of 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,49)".And we see that t_{\alpha/2}=2.01

Now we have everything in order to replace into formula (1):

6.26-2.01\frac{2.47}{\sqrt{50}}=5.56    

6.26+2.01\frac{2.47}{\sqrt{50}}=6.96    

So on this case the 95% confidence interval would be given by (5.56;6.96)    

6 0
3 years ago
Please help due in 5 minutes
grandymaker [24]

Step-by-step explanation:

c = 10

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you .☺️

6 0
3 years ago
Help!!!! Please anyone
Ivenika [448]
You can use Desoms for graphs
6 0
3 years ago
Find the value of w<br> A. 141<br> B. 110<br> C. 80<br> D. 100
saw5 [17]

Answer:

141

Step-by-step explanation:

Angle Formed by Two Chords= 1/2(SUM of Intercepted Arcs)

We know z+70 = 180 since they form a straight line

z = 110

z = 1/2 ( 79+w)

110 = 1/2 ( 79+w)

220 = 79+w

220-79 = w

141 =w

5 0
3 years ago
Drag each equation to show if it could be a correct first step to solving the equation 3(6+x)=24.
Aneli [31]

Answer:

Here you go

Step-by-step explanation:

Hope this helps :)

8 0
3 years ago
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