Answer:
answer is option A: 13m+8
 
        
             
        
        
        
STEP 1- since 6 doesn't contain the variable to solve for move it to the right side of the equation by subtracting 6 from both sides
X^2-8X=-6
STEP 2- create a trinomial square on the left side of the equation find the value that is equal to the square of half of b the coefficient of x 
(b/2)^2 =(-4)^2
STEP 3- add the term to each side of the equation
x^2-8x+(-4)^2=-6=(-4) 
STEP 4- simplify the equation
x^2-8x+16=10 
STEP 5- factor the perfect trinomial square into (x-4)^2
(x-4)^2=10
STEP 6-solve the equation for x
x=4= square root of 10
 
        
                    
             
        
        
        
Answer: (0.066,0.116)
Step-by-step explanation:
The confidence interval for proportion is given by :-

Given : The proportion of men have red/green color blindness = 
The proportion of women have red/green color blindness = 
Significance level : 
Critical value : 
Now, the 99% confidence interval for the difference between the color blindness rates of men and women will be:-

Hence, the 99% confidence interval for the difference between the color blindness rates of men and women= (0.066,0.116)
 
        
             
        
        
        
Step-by-step explanation:
Given the geometric sequence
8 + 6 + 4.5...
A geometric sequence has a constant ratio and is defined by























 ∵
               ∵ 


 ∵
        ∵  ,
,  
so 
 ∵
        ∵ 

 
       
 ∵
            ∵  
 ∵
        ∵  
 
            
Therefore, the sum of the first 25 terms in this geometric series: 31.98
 
        
             
        
        
        
No, because negative base sometimes results in non-real or imaginary value.