I hope this helps you 
1=?.7
?=1/7
        
             
        
        
        
Answer:
The answer is  ±
 ± in exact form or
 in exact form or  ,
,  in decimal form.
 in decimal form. 
Step-by-step explanation:
To solve this problem, start by moving all terms to the left side of the equation and simplify. Simplify the equation by subtracting 12 from both sides of the equation and squaring  , which will look like
, which will look like  . Next, simplify the equation again, which will look like
. Next, simplify the equation again, which will look like  .
. 
Then, use the quadratic formula to find the solutions. The quadratic formula looks like .
.
For this problem, the quadratic variables are as follows:



The next step is to substitute the values  ,
,  , and
, and  into the quadratic formula and solve. The quadratic formula will look like
 into the quadratic formula and solve. The quadratic formula will look like  . To simplify the equation, start by simplifying the numerator, which will look like
. To simplify the equation, start by simplifying the numerator, which will look like  . Then, multiply 2 by 1 and simplify the equation, which will look like
. Then, multiply 2 by 1 and simplify the equation, which will look like  . The final answer is
. The final answer is  ±
 ± in exact form. In decimal form, the final answer is
 in exact form. In decimal form, the final answer is  ,
,  .
.  
 
        
             
        
        
        
Answer:
Step-by-step explanation:
1
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Given x^2+4x+13=0, find the complex roots.  The best approach here is to use the quadratic formula.  Note that a = 1, b = 4 and c = 13.  
Thus, the discriminant, b^2 - 4ac, is (4)^2 - 4(1)(13) = 16 - 52 = -36, and the square root of that is plus or minus i√36, or  plus or minus 6i.  
plus or minus i√
 
        
                    
             
        
        
        
You gave us the speed and the frequency, and you need the wavelength.
You were also nice enough to remind us that (fqy)x(lng) = speed.
So . . . F x W = 343 m/s
Divide each side by F :
W = (343 m/s) / F
W = (343 m/s) / (240 / s)
W = (343/240) m
<em>W = 1.429 meters</em>