4x^2 + 9xy - y^2 = 8
8x + 9xf'(x) + 9y - 2yf'(x) = 0
f'(x) (2y - 9x) = 8x + 9y
f'(x) = (8x + 9y)/(2y - 9x)
Simplify both sides of the equation.
−3f=6
Divide both sides by -3.
−3f/−3 = 6/−3
f=−2
Answer:
f=−2
Answer: The required probability is 
Step-by-step explanation:
Since we have given that
Number of spruce tree = 20
Number of maple tree = 50
Total trees = 70
We need to find the experimental probability that the next tree Colleen to get a spruce tree.
So, the probability would be :

Hence, the required probability is 
IDK! I'M DOING IT FOR THE POINTS! LEL!
Creditworthiness is the answer