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Lelechka [254]
3 years ago
6

HELP PLEASE I WILL MAKE BRAINLYIST

Mathematics
1 answer:
lys-0071 [83]3 years ago
6 0

Answer:

Part A: Equation to represent monthly profit made by tutoring x student:

<em>z </em>= 120<em>x</em> - 760  

Part B: Number of students tutored in first month (x) = 8.

Step-by-step explanation:

Let the number of students being tutored by Mertin and his sister per month be<em> x.</em>

Fee charge for one student per month = $120

Total money earned by tutoring x students in a month = 120<em>x</em>

Total office rent paid per month = $ 760

Part A:

Let profit per month = <em>z</em>

Profit per month = Total money earned by tutoring per month - cost of rent per month.

According to question,

<em> z </em>= 120<em>x</em> - 760  .......(Eq. 1)

where z is total profit, x is total number of student tutored.

Part B:

Now, profit earned in first month (<em>Z</em>) = 200 $

Using Eq. 1,

<em>z </em>= 120<em>x</em> - 760

Putting the value of <em>z</em> in above equation,

200 = 120 <em>x  </em>- 760

120 x = 200 + 760

120 x = 960

x = 960/120

x = 8

So the number of students tutored by Martin and his sister in first month are 8.

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Two out of every 5 costumers at a restaurant use cash to pay for their meal. What percent of the costumers pay with cash?
Gnoma [55]

Answer:

40%

Step-by-step explanation:

Percent means out of 100

Multiply the top and bottom by 20 to get the bottom to 100

2/5 * 20/20 = 40/100

The percent is 40%

6 0
3 years ago
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How do I find the area of a circle when the circumference is 58 pie
aksik [14]
C=2\pir
A=\pir<span>²

C=2</span>\pir=58\pi
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A=\pir<span>²
A=29</span><span>²</span>\pi
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8 0
3 years ago
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What does a closed circle on a number line indicate? Is it the solution does not include that number?
Lilit [14]
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3 0
3 years ago
The frequency table shows how many visits to the library students in a school have made in the last month.
vfiekz [6]
<h3>Answer:  2.8</h3>

=======================================================

Explanation:

Multiply each visit count with their corresponding frequency.

Examples:

  • 0*12 = 0 for the first row.
  • 1*366 = 366 for the second row
  • 2*53 = 106 for the third row

and so on...

I recommend making a third column like this

\begin{array}{|c|c|c|} \cline{1-3}\text{Visits} & \text{Frequency} & \text{Visits*Frequency}\\\cline{1-3}0 & 12 & 0\\\cline{1-3}1 & 366 & 366\\\cline{1-3}2 & 53 & 106\\\cline{1-3}3 & 52 & 156\\\cline{1-3}4 & 155 & 620\\\cline{1-3}5 & 243 & 1215\\\cline{1-3}\end{array}

That way you can keep track of all the results in an organized way.

Then add everything in the third column

0+366+106+156+620+1215 = 2463

Divide this sum over the total frequency (12+366+53+52+155+243 = 881) and we'll get the mean

2463/881 = 2.7956867

Rounding to one decimal place gets us to 2.8 as the final answer.

-------------

The much longer way to do this is to imagine 12 copies of "0", 366 copies of "1", 53 copies of "2", and so on. We'll have an extremely large data set of 881 items inside it. As you can see, this second method is definitely not recommended to actually carry out. Rather it's helpful to have this as a thought experiment to see why we revert to multiplication instead.

Eg: Imagine adding 155 copies of "4". A shortcut is to simply say 4*155 = 620

4 0
2 years ago
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Ahlojjhbvgfotfdgouyf<br> (word count)
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Answer:

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8 0
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