Y=3 
to solve this you just substitute 4 in for x into the equation and solve for y. since negative 3 plus 7 is 4, y=4
        
                    
             
        
        
        
This is exactly like the one with the 'n's that you posted yesterday.
I guess you didn't get enough help on that one to understand it. 
<span><u>7k/8 - 3/4 - 5k/16 = 3/8</u>
3/4 is the same as 6/8.
Add it to each side of the equation:
7k/8         - 5k/16 = 9/8
Multiply each side by 16 :
14k - 5k = 18
Add up the 'k's on the left side:
9k = 18
From this point, you can proceed directly to the numerical value of 'k'
if you need it.<u />
In your question, you said you need help, and I showed you how to 
strip the problem down so that the only thing left is ' k = something '.
Giving you the answer is no help.  Nobody actually needs the answer.
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Yo sup??
To solve this question we have to apply trigonometric ratios
sin36=XY/WY
WY=XY/sin36
=8.5
Hope this helps.
 
        
             
        
        
        
Answer:
o-
Step-by-step explanation: