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Snezhnost [94]
3 years ago
13

Henry sells rings for $8 each. His expenses are $1.50 per ring, plus $91 for supplies. How many rings does he need to sell for h

is revenue to equal his expenses?
Mathematics
2 answers:
Firlakuza [10]3 years ago
8 0
Sorry, I’m not sure. Ask your teacher for help
kodGreya [7K]3 years ago
3 0

Answer:

14 rings.

Step-by-step explanation:

in order to calculate how many rings does he have to sell to break even we first have to calculate the profit that he has on the sell of every ring from which he can take money to pay per supplies, so that would be the selling price minues expenses:

8-1.5=6.5

Now we have to divide the 91 in supplies by the profit:

91/6.5=14

So he has to sell 14 rings in order to break even between expenses and supplies.

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3 years ago
Assume that the national credit card interest rate is 12.83 percent. A study of 62 college students finds that their average int
meriva

Answer:

b)  95 percent confidence interval for this single-sample t test

[11.64, 16.36]

Step-by-step explanation:

Explanation:-

Given data  a study of 62 college students finds that their average interest rate is 14 percent with a standard deviation of 9.3 percent.

Sample size 'n' =62

sample mean x⁻ = 14  

sample standard deviation 'S' = 9.3

<u>95 percent confidence interval for this single-sample t test</u>

The values are (x^{-} - t_{0.05} \frac{S}{\sqrt{n} } ,x^{-}+t_{0.05}\frac{S}{\sqrt{n} })  the <u>95 percent confidence interval for the population mean  'μ'</u>

Degrees of freedom γ=n-1=62-1=61

t₀.₀₅ = 1.9996 at 61 degrees of freedom

(14 - 1.9996\frac{9.3}{\sqrt{62} } ,14+1.9996\frac{9.3}{\sqrt{62} })

(14-2.361 , 14 + 2.361)

[(11.64 , 16.36]

<u>Conclusion:-</u>

95 percent confidence interval for this single-sample t test

[11.64, 16.36]

<u></u>

6 0
3 years ago
Find the area of a rectangle with L= 2/1/4 and W= 36 inch (A=LW) ​
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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x^{2} = x multiplied by x

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