26. 
You simply read the table on this one
        
                    
             
        
        
        
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<u><em>Answer:</em></u>either y = 4.5
or y = -4.5
<u><em>Explanation:</em></u>To get the solution, we will need to isolate the y on one side of the equation.
<u>This can be done as follows:</u>
4y</span>²<span> = 81
</span>

<span>
y</span>²<span> = 20.25
y = +/- </span>√(20.25)<span>
either y = +</span>√<span>(20.25) = 4.5
or y = -</span>√<span>(20.25) = -4.5
Since there are no restrictions on the value of y, therefore, both answers would be accepted
Hope this helps :)</span>
 
        
                    
             
        
        
        
Let wind speed = x mph 
when she rode 2 miles against the wind we have:-
speed = distance / time so
20 - x  = 2 / t -------(1)      where t is the time she took.
when riding with the wind we have 
20 + x = 3 / t--------(2)   adding equations (1) and (2):-
40  =  2/t + 3/t
40 =  5/t
t = 5/40 = 1/8 hr 
x = 20 - 2 / 1/8  = 20 - 16 = 4
Wind speed was 4 mph Answer
        
                    
             
        
        
        
Answer:
 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1c 2b 1d
Step-by-step explanation:
did the math