D is the right one, in all these suggestions , the number cube is rolled 1 time. 
        
             
        
        
        
The correct representation of 6 + 2n > 12 (n > 3) is  (3, ∞) and a number line with an open circle at +3 and being shaded from +3 to +5.
<h3>What is an 
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
Given the equation::
6 + 2n > 12 
Subtracting 6 from both sides:
6 + 2n - 6 > 12 - 6
2n > 6
Dividing by 2:
n > 3
The correct representation of 6 + 2n > 12 (n > 3) is  (3, ∞) and a number line with an open circle at +3 and being shaded from +3 to +5.
Find out more on equation at: brainly.com/question/2972832
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For all of these you're trying to solve for the variable. The variable is usually a number or symbol. 
11) -44+n=36 
Step one would be to add 44 to both sides of the equation. 
N=80 
12) -36=p-91
Step one would be to add -91 to both sides of the equation. 
P=55
13) X-225=671
Step one you be to add 225 to both sides of the equation. Although it may seem difficult because of the big numbers, it's the same technique. 
14) 19=c-(-12) 
Step one on this equation will be a little different. Because there are two negative signs (-), they turn into a plus sign. Remember, two negative signs make a positive sign.
19=c+12
Now you just subtract 12 from each side of the equation.
6=C 
        
             
        
        
        
Answer:
40 degrees is acute, 50 is also acute and they both make up a right angle (90 degrees)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Last option: x = -5
Step-by-step explanation:
-3x + 25 = 40
-3x = 40 - 25 
-3x = 15 
3x = -15 
x = -5