Your answer is c, an obtuse triangle because if the two side lengths are the same length along with a longer side, it become obtuse
let me know if you have any other questions
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18 tens= 180
20 ones= 20
180+20= 200
200
        
                    
             
        
        
        
Isolate k by dividing both sides by 8
8k=4/9
k=4/72
Reduce if possible
4/72 -> 1/18
        
                    
             
        
        
        
Answer: They are similar many ways.
Step-by-step explanation: 
1. There is a law that guides both of them. Because each has a strick law.
2. They both need practice. Practice they say makes one perfect. When u practice both of them, you become familiar on how to use them.
3. The brain has to read meaning to either of the two to be able to be able to learn a pattern of learn. 
4. Both language and functions are systems. They are made of different parts, language is made up of different words while function is made up of axioms which theorems.
 
        
             
        
        
        
You use elimination the get x=5 and then plug it in to get y=0 so the coordinate is (5,0)