<h2>~<u>Solution</u> :-</h2>
- We can convert a negative exponents by taking it as a fraction of denominator with numerator 1. As seen;
![{y}^{ - 1}](https://tex.z-dn.net/?f=%20%7By%7D%5E%7B%20-%201%7D%20)
![\mapsto \frac{1}{ {y}^{1} } \\](https://tex.z-dn.net/?f=%20%5Cmapsto%20%20%5Cfrac%7B1%7D%7B%20%7By%7D%5E%7B1%7D%20%7D%20%20%5C%5C%20)
- Hence, we can remove the negative exponent by converting the exponent to $\bf \frac{1}{y^{1}}$.
Sarah's expenses are 2130/3120×100% = 68.3% of her income.
The amount left over is 100% - 68.3% = 31.7%
2 x 3.99 = 7.98
3 x 4.49 = 13.47
1 x 4.99 = 4.99
Total: 26.44
50.00 - 26.44 = 23.56
Answer: Option B.
Step-by-step explanation:
You need to remember that the y-coordinate of the midpoint is the average of the y-coordinate of the two points:
![\frac{y_1+y_2}{2}](https://tex.z-dn.net/?f=%5Cfrac%7By_1%2By_2%7D%7B2%7D)
Given the endpoints (0,0) and (0,15) of the line segment, you can identify that the y-coordinate of each one are:
![y_1=0\\y_2=15](https://tex.z-dn.net/?f=y_1%3D0%5C%5Cy_2%3D15)
Then, when you substitute them into
, you get:
![=\frac{0+15}{2}=\frac{15}{2}=7.5](https://tex.z-dn.net/?f=%3D%5Cfrac%7B0%2B15%7D%7B2%7D%3D%5Cfrac%7B15%7D%7B2%7D%3D7.5)
Then, the method that you could use to calculate the y-coordinate of the midpoint of this vertical line segment is:
Divide 15 by 2.