2x^2 - 11 = 87
2x^2 = 87 + 11 = 98
x^2 = 98/2 = 49
x = sqrt (49) =  + or - 7
        
                    
             
        
        
        
Answer: 132 degrees
Explanation: a straight line has 180 degrees in it, take away the 48 leaves you with 132.
        
             
        
        
        
Answer:
58
Step-by-step explanation:
upper quartile is the median of the upper half of a data set
The median is the middle number which is 37
There are 5 numbers left in the upper half
The middle number or median  of the upper half is 58
 
        
                    
             
        
        
        
Answer:
54+61
Step-by-step explanation:
54 + 61 = 115
61 - 54 = 7