Answer:
3 +2xy+6xy+12x+4y
+2xy+6xy+12x+4y
Step-by-step explanation:
(3x+y)(x2+2y+4=+2xy+6xy+12x+4y
 
        
                    
             
        
        
        
Answer:
1. In the multiplication of the imaginary parts, the student forgot to square of i. OR
2. The student has only multiplied the real parts and the imaginary parts. 
Correct value  .
.
Step-by-step explanation:
The given expression is

A student multiplies (4+5i) (3-2i) incorrectly and obtains 12-10i.
Student's mistake can be either 1 or second:
1. In the multiplication of the imaginary parts, the student forgot to square of i.
2. The student has only multiplied the real parts and the imaginary parts. 

Which is not correct. The correct steps are shown below.
Using distributive property, we get



 
       ![[\because i^2=-1]](https://tex.z-dn.net/?f=%5B%5Cbecause%20i%5E2%3D-1%5D)


Therefore, the correct value of  is
 is  .
.
 
        
             
        
        
        
Answer:
She spent 8 hours with the bike. She did rent the bike.
Step-by-step explanation:
The $11 fee is only a one time payment. The $5 is every hour so 5x8 is 40+11 is 51.
 
        
             
        
        
        
Answer:
$1000 ; 500 ; 1000 ; y = 500x + 1000
Step-by-step explanation:
From the graph, the initial deposit which started the savings account is $1000 ; this is the value on the y - intercept, the value in the account at time or period = 0.
The slope :
x1 = 0 ; y1 = 1000
x2 = 6 ; y2 = 4000
Slope = Rise / Run
Rise = y2 - y1 = 4000 - 1000 = 3000
Run = x2 - x1 = 6 - 0 = 6
Hence,
Slope = 3000 / 6
Slope = 500
y - intercept = 1000 (from. Graph)
Equation in slope intercept form:
General form : y = mx + c
m = slope ; c = intercept
Equation is written as ;
y = 500x + 1000
 
        
             
        
        
        
The square root of 64 is 8 and the square root of 100 is 10.... so,
square root of 64/100 = 8/10
8/10 reduces to 4/5
Answer D.