24)y=x-4
21) y=-3x+1
23) y=4/5x+6
Answer:
Mark up = 33.33%
Step-by-step explanation:
Given that:
buying price = $75
selling price = $100
First we will find the difference between two prices:
Difference = 100 - 75 = $25
We will find now that 25 is what percent of 75 so:
=25/75* 100
= 0.333333 * 100
= 33.33%
So the store marked the price by 33.33% instead of 30%
i hope it will help you!
Answer:
i think its b but im not sure
Step-by-step explanation:
1 inch equals four 4 because 32 divided by 4 is 8 and 40 divided by 4 is 10
Answer:
Step-by-step explanation:
E(-1,6) & F(-2,-10)
![Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\\ \ \ \ = \frac{-10-6}{-2-[-1]}\\](https://tex.z-dn.net/?f=Slope%20%3D%20%5Cfrac%7By_%7B2%7D-y_%7B1%7D%7D%7Bx_%7B2%7D-x_%7B1%7D%7D%5C%5C%5C%5C%5C%20%20%5C%20%20%5C%20%5C%20%3D%20%5Cfrac%7B-10-6%7D%7B-2-%5B-1%5D%7D%5C%5C)
![=\frac{-10-6}{-2+1}\\\\=\frac{-16}{-1}\\\\= 16](https://tex.z-dn.net/?f=%3D%5Cfrac%7B-10-6%7D%7B-2%2B1%7D%5C%5C%5C%5C%3D%5Cfrac%7B-16%7D%7B-1%7D%5C%5C%5C%5C%3D%2016)
Slope of the line perpendicular to this line = -1/m = -1/16