3x+2y=5w is your answer so your main/real answer is 5w
Answer:
9.7%
Step-by-step explanation:
Required expression is x/9 - 7
Answer:
what is the question
Step-by-step explanation:
Differentiating both sides of
![x^3-y^3=1](https://tex.z-dn.net/?f=x%5E3-y%5E3%3D1)
with respect to <em>x</em> yields (using the chain rule)
![3x^2 - 3y^2 \dfrac{\mathrm dy}{\mathrm dx} = 0](https://tex.z-dn.net/?f=3x%5E2%20-%203y%5E2%20%5Cdfrac%7B%5Cmathrm%20dy%7D%7B%5Cmathrm%20dx%7D%20%3D%200)
Solve for d<em>y</em>/d<em>x</em> :
![3x^2 - 3y^2 \dfrac{\mathrm dy}{\mathrm dx} = 0 \\\\ 3y^2\dfrac{\mathrm dy}{\mathrm dx} = 3x^2 \\\\ \dfrac{\mathrm dy}{\mathrm dx} = \dfrac{3x^2}{3y^2} = \dfrac{x^2}{y^2}](https://tex.z-dn.net/?f=3x%5E2%20-%203y%5E2%20%5Cdfrac%7B%5Cmathrm%20dy%7D%7B%5Cmathrm%20dx%7D%20%3D%200%20%5C%5C%5C%5C%203y%5E2%5Cdfrac%7B%5Cmathrm%20dy%7D%7B%5Cmathrm%20dx%7D%20%3D%203x%5E2%20%5C%5C%5C%5C%20%5Cdfrac%7B%5Cmathrm%20dy%7D%7B%5Cmathrm%20dx%7D%20%3D%20%5Cdfrac%7B3x%5E2%7D%7B3y%5E2%7D%20%3D%20%5Cdfrac%7Bx%5E2%7D%7By%5E2%7D)
The answer is then D.