Answer:
N = 53°
Step-by-step explanation:
1. 55 + 72 = 127°
2. 180° - 127° = 53°
3. Angle N is 53°
I hope this helps in any way:)
 
        
             
        
        
        
Answer: The answer is x = -2 :)
Step-by-step explanation:
To find the answer you add 10 to both sides and 10 + (-12) is -2
 
        
             
        
        
        
841 jumping jacks per 4 minutes

Divide both sides by 4.

Delilah can do 210.25 (or 210) jumping jacks per minute.
 
        
             
        
        
        
Answer:
x=-4/9, y=10/3. (-4/9, 10/3). 
Step-by-step explanation:
3x+4y=12
3x=2y-8
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2y-8+4y=12
6y-8=12
6y=12+8
6y=20
y=20/6
simplify,
y=10/3
3x=2(10/3)-8
3x=20/3-8
3x=20/3-24/3
3x=-4/3
x=(-4/3)/3
x=(-4/3)(1/3)=-4/9
x=-4/9, y=10/3. (-4/9, 10/3). 
 
        
             
        
        
        
13. 10-14
14.I can't see the whole graph, so you need to do it yourself. Add up everyone's age and divide by the amount of people on the graph. That will give you the average.