Answer:
18
ZAOC and ZCOB are supplementary angles.
Find the
 
        
             
        
        
        
Answer: They would have to score an 88%
Step-by-step explanation:
1.) The mean of 84, 92, 83, and 78 is 337
2.) 337 divided by 4 is 84.25% 
3.) If you add 88 to 337 and divide by 5, you get 85% 
 
        
             
        
        
        
Answer: x= 1
Step-by-step explanation: Look at pic down below.
 
        
             
        
        
        
Answer:   C. (-4, -2)
<u>Step-by-step explanation:</u>
First, eliminate one of the variables and solve for the remaining variable:
2x - 5y = 2      →    3(2x - 5y = 2)      →     6x - 15y = 6
3x + 2y = -16   →  -2(3x + 2y = -16)    →  <u> -6x - 4y = 32</u>
                                                                      -19y = 38
                                                                          y = -2 
Next, replace "y" with -2 into either of the original equations to solve for x:
2x - 5y = 2
2x - 5(-2) = 2
2x + 10 = 2
2x         = -8
  x          = -4
                                        x = -4,  y = -2
<u>Check:</u>
Plug in the x- and y-values into the other original equation:
3x + 2y = -16
3(-4) + 2(-2) = -16
 -12  +  -4     = -16
       -16         = -16   
 
        
             
        
        
        
Answer:
The answer is B
Step-by-step explanation:
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