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
 
        
             
        
        
        
For this case we can make the following rule of three:
 1/10 scarf ------> 4/5 hour
 x ------------------> 1 hour
 Clearing the value of x we have:
 x = (1 / (4/5)) * (1/10)
 Rewriting we have:
 x = (5/4) * (1/10)
 x = 5/40
 x = 1/8
 Answer:
 A fraction of a scarf that alison can knit in 1 hour is:
 x = 1/8
        
                    
             
        
        
        
The answer should be 10,000.