No because the sum could also be irrational number which for example it could be square root of 9 or 49
Hope this helps answer your question
Answer:
18 π cm^2.
Step-by-step explanation:
The area of the whole circle = π r^2 = 81π cm^2.
Since there are 360 degrees in a circle the area of the shaded region =
80/360 * area of the circle.
This = 80/360 * 81 π
= 2/9 * 81 π
= 18 π
Answer:
$1,635
Step-by-step explanation:
she makes $45 a year so if you multiply that by 3 you get $135
The break even point for this book store is 10
<em><u>Solution:</u></em>
Given that, book store cost $80 a day to keep open, and it spends $15 for each book that it sells
Cost to open the book store = $ 80
<em><u>The formula for solving the break even point (BEP) is:</u></em>
![BEP = \frac{\text{Fixed cost}}{\text{Selling price - variable cost}}](https://tex.z-dn.net/?f=BEP%20%3D%20%5Cfrac%7B%5Ctext%7BFixed%20cost%7D%7D%7B%5Ctext%7BSelling%20price%20-%20variable%20cost%7D%7D)
Fixed Cost is the cost that remains constant whether the services provided or products sold increases or decreases
Variable Cost is the cost that varies or differs in proportion to the products or services produced, whether they increased or decreased
In this problem,
Fixed cost = $ 80
Selling price = $ 23
Variable cost = $ 15
Therefore,
![BEP = \frac{80}{23-15}\\\\BEP = \frac{80}{8}\\\\BEP = 10](https://tex.z-dn.net/?f=BEP%20%3D%20%5Cfrac%7B80%7D%7B23-15%7D%5C%5C%5C%5CBEP%20%3D%20%5Cfrac%7B80%7D%7B8%7D%5C%5C%5C%5CBEP%20%3D%2010)
Thus break even point for this book store is 10
In order for the bookstore to continue its business, it should sell at least 10 books to meet its $80 cost