Answer:
B x = sqrt(48)
Step-by-step explanation:
Half of the bottom side measures 4.
4^2 + x^2 = 8^2
16 + x^2 = 64
x^2 = 48
x = sqrt(48)
Answer: B x = sqrt(48)
 
        
             
        
        
        
Answer:
3. x + 18.
4. 8n + 16
Step-by-step explanation:
3. We have to calculate the area of wood present in the frame whose dimensions are given with the question.
Requires area = {(x + 3) × 1} + [(4 - 1) × {(x + 3) - (x - 2)}] = x + 3 + 3 × 5 = x + 18. (Answer)
4. The sum of four consecutive odd numbers where 2n + 1 is the smallest odd number will be 
= (2n + 1) + (2n + 3) + (2n + 5) + (2n + 7)
= 8n + 16 (Answer)
 
        
             
        
        
        
Answer:
5 times more books
Step-by-step explanation:
In total Marisol has 75 books.  She has 5 times as many books and Jerry has 15.  5*15=75
 
        
             
        
        
        
Answer:
A - B  =  [  -1  3  ]
              [ -6  2  ]
              [ -4 -10 ]
Step-by-step explanation:
Since Matrix A and Matrix B have the same size, then we can simply perform the operation of subtraction on each position within the matrices to get the resulting subtracted matrix. 
A =  [  4  7  ]              B =  [  5  4  ]
       [ -3  8  ]                     [  3  6  ]
       [ -5 -2  ]                    [  -1  8  ]
A - B  =  [ (4 - 5)  (7 - 4) ]
              [ (-3 - 3) (8 - 6) ]
              [ (-5 - -1) (-2 - 8) ]
A - B  =  [  -1  3  ]
              [ -6  2  ]
              [ -4 -10 ]
Cheers.
 
        
             
        
        
        
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