Answer:
A.
{7}
Step-by-step explanation:
hello 
sqrt(56-7) =sqrt(49)=7 
 
        
             
        
        
        
Answer:
7.75 pounds
Step-by-step explanation:
16 ounces equals 1 pound so divide 16 by 124 to get 7.75
 
        
                    
             
        
        
        
Answer:
Confidence interval:  (1760,1956)
Step-by-step explanation:
We are given the following information in the question:
Sample size, n = 81
Sample mean = 

Population standard deviation =

Confidence Level = 95%
Significance level = 5% = 0.05
Confidence interval:

Putting the values, we get,


 
        
             
        
        
        
Answer:
Step-by-step explanation:
hello : write this expression 
X² + y² + 6x – 2y+3 = 0  in the standard form
(x²+6x) +(y²-2y) +3 = 0
(x²+6x+9 -9) +(y²-2y+1 - 1) +3 = 0
(x²+6x+9) -9 +(y²-2y+1) - 1 +3 = 0
(x+3)²+(y-1)² = 7(the standard form)
but : 7 = (√7)²
<h2>the radius is : 
√7</h2>
 
        
             
        
        
        
Answer:
y = -17
Step-by-step explanation:
5 + 3(y - 4) = 5(y + 2) - y        Distribute 
5 + 3y -12 = 5y + 10 - y          Combine like terms
-7 + 3y = 4y + 10
+7                 +17                    Add 17 to both sides
3y = 4y + 17
-4y   -4y                                 Subtract 4y from both sides
-y = 17                                     Divide both sides by -1
y = -17
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