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sdas [7]
3 years ago
9

Help me PLEASE This is confusing and im getting frustrated. Ill brainliest the best answer with a good explanation so I can have

a better understanding of the equation.

Mathematics
2 answers:
gtnhenbr [62]3 years ago
7 0

<u>Answer:</u>

  • The total expenses is $156 is the total necklaces sold is 4.

<u>Step-by-step explanation:</u>

We know that:

  • x = Necklaces created and sold
  • 140 + 4(x) = Total cost
  • 39x = Profit = Total cost
  • Profit = Total cost

Work:

  • 140 + 4x = 39x
  • => 140 = 39x - 4x
  • => 140 = 35x
  • => x = 140/35
  • => x = 4

Now, let's substitute the value of x into any equation to find the total expenses and sales.

  • 140 + 4x
  • => 140 + 4(4)
  • => 156

Hence, <u>the total expenses is $156 is the total necklaces sold is 4.</u>

<u>Hoped this helped.</u>

BrainiacUser1357

Marysya12 [62]3 years ago
5 0

Answer:

Nina would have total expenses and sales $156 after selling 4 necklaces.

Step-by-step explanation:

Let <em>x</em> represent the amount of necklaces made and sold.

The initial cost was $140 and it costs $4 to produce one necklace. Hence, the total cost after producing <em>x</em> necklaces can be represented as:

\displaystyle 140 + 4x

Each necklace sells for $39. Hence, the total profit after selling <em>x</em> necklaces can be represented as:

\displaystyle 39x

To break even, the total cost and profit must be equivalent. Hence:

\displaystyle 140 + 4x = 39x

Solve for <em>x: </em>

<em />\displaystyle \begin{aligned} 140 + 4x & = 39x \\ \\ 140 & = 35x \\ \\ x & = 4 \end{aligned}<em />

<em />

Hence, the break even, Nina would need to sell four necklaces.

And the total expenses/profit would be:

\displaystyle \$39(4) = \$156

In conclusion, Nina would have total expenses and sales $156 after selling 4 necklaces.

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Which expression correctly represents “six more than the product of five and a number, decreased by one”?
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Step-by-step explanation:

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Finally, "six more than the product of 5 and a number, decreased by one" would be

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Solve <br> 5x+4+8x-3=79 ???
sammy [17]

Answer:

x=6

Step-by-step explanation:

5x+4+8x-3=79

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Zach invested $1500. He earned 23.2% on his investment. Determine how much money he has now.
Alika [10]
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Next, multiply the 15(1%) by the 23.2% to figure out how much that is.
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According to a marketing research study, American teenagers watched 14.8 hours of social media posts per month last year, on ave
ki77a [65]

Answer:

The value of test statistics is 1.06.

Step-by-step explanation:

We are given that according to a marketing research study, American teenagers watched 14.8 hours of social media posts per month last year, on average. A random sample of 11 American teenagers was surveyed and the mean amount of time per month each teenager watched social media posts was 15.6. This data has a sample standard deviation of 2.5.

We have to test if the mean amount of time American teenagers watch social media posts per month is greater than the mean amount of time last year or not.

Let, NULL HYPOTHESIS, H_0 : \mu = 14.8 hours  {means that the mean amount of time American teenagers watch social media posts per month is same as the mean amount of time last year}

ALTERNATE HYPOTHESIS, H_1 : \mu > 14.8 hours  {means that the mean amount of time American teenagers watch social media posts per month is greater than the mean amount of time last year}

The test statistics that will be used here is One-sample t-test;

             T.S. = \frac{\bar X - \mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

where, \bar X = sample mean amount of time per month each teenager watched social media posts = 15.6 hours

             s = sample standard deviation = 2.5 hours

             n = sample of teenagers = 11

So, <u>test statistics</u> =  \frac{15.6 - 14.8}{\frac{2.5}{\sqrt{11} } } ~ t_1_0

                            = 1.06

Hence, the value of test statistics is 1.06.

5 0
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