Answer:
 5x^3 + 16x - 2y^3
Step-by-step explanation:
7x + y^3 + 7x^3 + 6x - 3y^3 - 2x^3 + 3x
group like terms
= 7x^3 - 2x^3 + 7x + 6x + 3x + y^3 - 3y^3
add similar items
= 5x^3 + 7x + 6x + 3x + y^3 - 3y^3
add similar items
= 5x^3 + 16x + y^3 - 3y^3
add similar items
= 5x^3 + 16x - 2y^3
 
        
             
        
        
        
The formula for the light bend would be n1*sin i= n2 * sin r
If you use "sin (90-x)= cos x" principle, you can change the sin in the equation into 
n1*sin i= n2 * sin r
n1 * cos a= n2 * cos b
n2/n1= cos a/ cos b
Assuming the n constant is the ratio of the glass compared to water then the answer would be: cos a/ cos b
        
             
        
        
        
Answer:
<em>The estimated sales were $260 million</em>
Step-by-step explanation:
Assume the endpoints of a segment are (x1,y1) and (x2,y2).
The midpoint (xm,ym) is calculated as follows:


The sales ov Cars, Inc. were (2008,240 million) and (2010,280 million). We need to use the midpoint to estimate the sales in 2009:


The estimated sales were $260 million
 
        
             
        
        
        
Answer:
3 miles
Step-by-step explanation:
 5 + m=8
Subtract 5 from each side
 5-5 + m=8-5
m = 3
She needs to swim 3 more miles
 
        
                    
             
        
        
        
Answer:
-5/2
Step-by-step explanation:
The next term will be,
→ -2/4
→ (-2-3)/(4÷2)
→ -5/2
Hence, the solution is -5/2.