Answer:
you maybe can install app photomath
 
        
             
        
        
        
Answer: maybe its 6
Step-by-step explanation:
i think its 6 because it has +3 so maybe adding 3+3 
 
        
             
        
        
        
DNA<span> is </span>made<span> up of six smaller </span>molecules<span> a five carbon sugar called deoxyribose, a phosphate </span>molecule<span> which contains these four (adenine, thymine, cytosine and guanine).</span>
        
             
        
        
        
Answer:
its 29
Step-by-step explanation:
 
        
             
        
        
        
Answer:
 ; line D in the options.
; line D in the options.
Step-by-step explanation:
The set of equations has no solutions if the two lines are parallel. A quick way to create a parallel line is to solve for y, put it in slope-intercept form. Else, as long as the cofficient of x and y are in the same ratio (in this case 1:1), the two lines are parallel, you just have to be careful not to pick the same line again!
The condition  makes sure you are still getting lines (else you would get rid of both x and y); the condition
 makes sure you are still getting lines (else you would get rid of both x and y); the condition  makes sure you're not picking line A again, just written in a different form.
 makes sure you're not picking line A again, just written in a different form.
Now that we have the options: 
A and C have a different ratio for the coefficient of x and y (2:1 and 1:2) so are not good.
Choice B is just a more complicated way to write the same line, you can see by dividing both sides by 2 and get back x+y=2.
Line D is correct.