X=6 and 2/3
the proportion is also 3:5
Answer
To convert degrees to radians you multiply your degree by π, then divide by 180. Hope that helps :)
Answer:
A
Step-by-step explanation:
We have the equation:

Take the derivative of both sides with respect to x:
![\frac{d}{dx}[x^2+xy-3y]=\frac{d}{dx}[3]](https://tex.z-dn.net/?f=%5Cfrac%7Bd%7D%7Bdx%7D%5Bx%5E2%2Bxy-3y%5D%3D%5Cfrac%7Bd%7D%7Bdx%7D%5B3%5D)
Implicitly differentiate:

Solve for dy/dx:

Divide:

To find dy/dx at (2, 1), substitute 2 for x and 1 for y. So:

Hence, our answer is A.
70x=210
210/70=3
basically 70 times what equals 210, well take 210 and divide it by 70, you will get 3
The answer to that is 20.5