Answer:
325
Step-by-step explanation:
40/100=130/x
Cross multiply to find x
40x=13000
/4 /4
x=325
This is a really simple problem once you understand how to solve it, and that's what I'm going to show you! :)
When calculating the mean (average) of multiple numbers, your first step is to add the numbers together.
190,258.50 + 152,698.00 + 122,753.00 + 220,523.00 + <span>231,951.00 = 918,183.50
Then you take the sum of your numbers, and divide the sum by the amount of numbers added, which in your case, is 5.
918,183.50/5 = 183,636.70
The average of these numbers is $183,636.70
Feel free to message me or comment with any questions you have about this.</span>
By applying the concept of the inverse of a function and <em>algebraic</em> handling, we conclude that the inverse of f(x) = (- 2 · x + 2)/(x + 7) is g(x) = (- 7 · x + 2)/(x + 2).
<h3>How to find the inverse of a function</h3>
In this question we have a <em>rational</em> function f(x) and finding its inverse consists in clearing x in terms of f(x). Prior any algebraic handling, we need to apply the following substitutions:



x · (y + 7) = - 2 · y + 2
x · y + 7 · x = - 2 · y + 2
2 · y + x · y = - 7 · x + 2
y · (2 + x) = - 7 · x + 2

By applying the concept of the inverse of a function and <em>algebraic</em> handling, we conclude that the inverse of f(x) = (- 2 · x + 2)/(x + 7) is g(x) = (- 7 · x + 2)/(x + 2).
To learn more on inverses: brainly.com/question/7181576
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It should be B because if class average will increase then the cost of books will be increased. Therefore, class average will be independent variable and cost of books will be dependant.
Hope this helps you out... :)
Answer:
6322
Step-by-step explanation:
Have a nice day or night!