Answer:
3.
Step-by-step explanation:
Implicit differentiation:
x^2 y + (xy)^3 + 3x = 0
x^2 y + x^3y^3 + 3x = 0
Using the product rule:
2x* y + x^2*dy/dx + 3x^2 y^3 + x^3* (d(y^3)/dx) + 3 = 0
2xy + x^2 dy/dx + 3x^2 y^3 + x^3* 3y^2 dy/dx + 3 = 0
dy/dx(x^2 + 3y^2x^3) =  (-2xy - 3x^2y^3 - 3)
dy/dx=  (-2xy - 3x^2y^3 - 3) / (x^2 + 3y^2x^3)
At the point (-1, 3).
the derivative =  (6 - 81 - 3)/(1 -27)
= -78/-26
=  3.
 
        
                    
             
        
        
        
The miller needs 1-3/4 kg (or  1.75 kg) for two loaves.
Therefore the amount of flour needed for 1 loaf is
1.75/2 = 0.875 kg per loaf.
For 8 loaves, the amount of flour needed is 
8*0.875 = 7 kg
Answer: 7 kg of flour is needed for 8 loaves.
        
             
        
        
        
Answer:
163/20 or 8.15
Step-by-step explanation:
well we are going to do PEMDAS
parentheses 
exponents
multiplication/ division
addition/ subtraction 
2 + 2/5 x 23/4 (i made the fractions into decimals)
2 + 6.15
163/20 or 8.15
 
        
                    
             
        
        
        
Answer:
Attached is the detailed solution of the problem 
∈ = 0.0081 ≈ 0.2
∈ = 0.0042 ≈ 0.1
Step-by-step explanation:
Attached is the detailed solution of the problem 
∈ = 0.0081 ≈ 0.2
∈ = 0.0042 ≈ 0.1
A graphing calculator recommended  was used to arrive at this solution
 
        
             
        
        
        
First, add 1 on both sides of the equation to begin to isolate x
x/5 = 8
Now, to isolate x, multiply both sides of the equation by 5/1

 · 

 = 

 = x
x= 7 · 5/1 = 7 · 5 = 35
x = 35