Answer:
10
Step-by-step explanation:
f(x) = 3x + 1
f^-1 = x-1/3 , it is known as inverse function.
 f(3)= 3*3 +1
 =9+1
 =10
 
To find inverse,
 x=3x + 1
y=3x+1
Exchanging the position or x and y
 x=3y+1
 x-1=3y
.•. y=x-1/3
 
        
             
        
        
        
Answer:
Multiply value in mm by 1000
Step-by-step explanation:
For example, 3m = (3 * 1000)mm
                             = 3000mm
 
        
                    
             
        
        
        
For this case we have the following diagonals:
 AE = 40
 ST = x + 5
 The intersection of the diagonals occurs when:
 AE = ST
 Therefore, matching we have:
 40 = x + 5
 Clearing x we have:
 x = 40-5
 x = 35
 Answer:
 The value of x is:
 x = 35
        
                    
             
        
        
        

_____
Multiply the numbers and add the exponents.
 
        
             
        
        
        
187 cm squared.
Based on rectangle:
2L + 2W = 56 
Draw the square and name your sides the following:
(W+4) , (L-2), (W+4), (L-2)
Because it’s a square, all sides are equal and we can remove and solve for one of the variables but keep in mind the parameter changed..
The new parameter is 56 minus 4cm + 8cm...keep in mind I used 4cm and 8cm because we have a 2 Lengths and 2 Widths.
Solving 60= 4 (w+4)
W= 11
So the side of our square is 11+4=15
L-2 = 15
L=17
So the area of the Rectangle is 11*17=187 cm squared.
Please let me know if it’s correct !