Answer:
Triangles.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
a. Radius of DA - 2 cm.
b. Area of rectangle ABCD - 
c. Area of shaded - 8-4π
d. Perimeter of shaded region - also 8-4π
<em><u>Hope this helps!  </u></em>
 
        
             
        
        
        
Answer:
 is the function of the least degree has the real coefficients and the leading coefficients of 1 and with the zeros -1, 5, and 2.
 is the function of the least degree has the real coefficients and the leading coefficients of 1 and with the zeros -1, 5, and 2.
Step-by-step explanation:
Given the function

As the highest power of the x-variable is 3 with the leading coefficients of 1.
- So, it is clear that the polynomial function of the least degree has the real coefficients and the leading coefficients of 1.
solving to get the zeros

 ∵
              ∵  
as

so
 
     
Using the zero factor principle
if  


Therefore, the zeros of the function are:

 is the function of the least degree has the real coefficients and the leading coefficients of 1 and with the zeros -1, 5, and 2.
 is the function of the least degree has the real coefficients and the leading coefficients of 1 and with the zeros -1, 5, and 2.
Therefore, the last option is true.    
 
        
             
        
        
        
Answer:
so if she hike 12 km every 4 hours, how many km could she hike in 6 hours. 
first u have to find the equation. 12 km=4hours
? =6hours
and then you have to multiply 12 km by 6 hours and divide the results by 4 which is 12×6÷4. the final answer will be 18 kilometers. 
Step-by-step explanation:
Sorry if its wrong
 
        
             
        
        
        
Its a simultaneous equation:
lets make "x" the used games and "y" the new ones
4x + 2y = 84
6x + y = 78. (multiply this by 2 to cancel out y)
12x + 2y = 156
so now we subtract them:
12x - 4x = 156 - 84
x = 9
used games cost $9
new games cost 78 - 6(9) = $24
Janet has $120 but she already bought 3 NEW games so:
120 - 3(24) = $48 left
48/9 = how many used ones she can buy = 5. something
she can buy 5 used