In one hour she will walk 3 3/4 miles.
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.
<span>5.505 thats the answer it says equals</span>
2 is the answer cause 1+1=2 I don’t know any other way to explain
Answer:
Step-by-step explanation:
answer <u><em>volume cubic centimetre priority</em></u>
<em>volume=4+4=8</em>
<em>14-8=</em>
<u><em>6 cubic feet. </em></u>
<u><em>thanx</em></u>
<u><em>mark as brainlest</em></u>