Answer:
Step-by-step explanation:
Wat is the question lol
Verbal model: mile/inch=mile/inch
Proportion: 7/8÷3/10=x/1
Solve= 7/8*10/3=x/1
70/24=x/1
70=24x
x=35/12
The unit rate must be
Answer:

Step-by-step explanation:
We begin with : ![6x^2-7xy+8y^2-[(x^2-3xy-y^2)+(2x^2+5xy-4y^2)]](https://tex.z-dn.net/?f=6x%5E2-7xy%2B8y%5E2-%5B%28x%5E2-3xy-y%5E2%29%2B%282x%5E2%2B5xy-4y%5E2%29%5D)
First, let us add the two portions within the brackets. To do this, we need to just combine the like terms
![6x^2-7xy+8y^2-[(x^2-3xy-y^2)+(2x^2+5xy-4y^2)]\\\\6x^2-7xy+8y^2-[3x^2+2xy-5y^2]](https://tex.z-dn.net/?f=6x%5E2-7xy%2B8y%5E2-%5B%28x%5E2-3xy-y%5E2%29%2B%282x%5E2%2B5xy-4y%5E2%29%5D%5C%5C%5C%5C6x%5E2-7xy%2B8y%5E2-%5B3x%5E2%2B2xy-5y%5E2%5D)
Next, we need to distribute the negative to all the terms within the brackets
![6x^2-7xy+8y^2-[3x^2+2xy-5y^2]\\\\6x^2-7xy+8y^2-3x^2-2xy+5y^2](https://tex.z-dn.net/?f=6x%5E2-7xy%2B8y%5E2-%5B3x%5E2%2B2xy-5y%5E2%5D%5C%5C%5C%5C6x%5E2-7xy%2B8y%5E2-3x%5E2-2xy%2B5y%5E2)
Now we can combine the like terms again

y=X equation is a direct variation function.