Answer:
x = 12, z  = 86
Step-by-step explanation:
Two angles are called supplementary when their measures add up to 180 degrees.
(12x -58  + 13x - 62 ) = 180°
12 x + 13x -58 - 62 = 180°
25x - 120 = 180
25x = 180 + 120 
x = 300/ 25
x = 12
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(z° + 13x - 62) = 180
(z° + 13(12) - 62 )= 180
(z° +  156 - 62 )= 180
(z° + 94 ) = 180
z° = 180 - 94
z  = 86
 
        
             
        
        
        
Answer:


And the margin of error with this one:


Step-by-step explanation:
Assuming that the parameter of interest is the sample mean  . And we can estimate this parameter with a confidence interval given by this formula:
. And we can estimate this parameter with a confidence interval given by this formula:
 (1)
   (1)
For this case the confidence interval is given by (1.9, 3.3) 
Since the confidence interval is symmetrical we can estimate the sample mean with this formula:


And the margin of error with this one:


 
        
             
        
        
        
Answer:
6 cookies
Step-by-step explanation:
first, find how much money they spent on cupcakes
6 × $2.25 = $13.5
then, take $13.5 and subtract that by $24
$24 - $13.5 = $10.5
so the person spent $10.5 on cookies. divide the amount per cookie by $10.5 
$10.5 ÷ $1.75 = 6
so they bought 6 cookies
 
        
             
        
        
        
Answer:
1 person did as you can see
 
        
                    
             
        
        
        
Answer:126
Step-by-step explanation: your welcome