Given CD is an altitude such that AD=BC , AB=3 cm and CD= √2 cm.
Let AD=x, Since given AB=3
                                      AD+DB=3
                                        x+DB = 3
                                         DB = 3-x
Since ΔBCD is rght angle triangle, let's apply Pythagoras theorem
 


Since given AD=BC,let us plugin BC=x in above step.


6x=11
 x=
Now we know AD=x= and given CD=√2.
 and given CD=√2.
Let us apply Pythagoras theorem for ΔACD



 = 2.315cm
 = 2.315cm
 
        
             
        
        
        
3/4 w = 9
multiply by 4/3 on both sides
4/3 x 3/4 w = 9 x 4/3
w = 9 x 4/3
Simplify that
w = 3 x 4
w = 12
So your final answer is
 
 
        
        
        
Answer:
l
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Equations::
4c + 8t = 58
2c + 3t = 23
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Modify for elimination:
4c (4c*1) + 8t (8t*1)= 58
4c (2c*2) + 6t (3t*2)= 46
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Subtract and solve for "t":
2t (8t-6t) = 12
t = $6 (cost of one table)
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Solve for "c":
2c + 3t = 23
2c + 18 = 23
2c = 5
c = $2.50 (cost of one chair)