Answer:
Perpendicular
Step-by-step explanation:
when graphed they intersect
 
        
                    
             
        
        
        
Answer:
C
Step-by-step explanation:
The substance in the second beaker must have lost heat for it to solidify
 
        
                    
             
        
        
        
Answer: 5y + x
Step-by-step explanation: As you first step to this problem, change all your minus signs to plus negatives.
To simplify, we can only combine what are called our like terms and in this problem, we have one y-term and we have a pair of like terms in our x-terms.
So let's start by combining our y-terms.
13y + -7y simplifies to 5y.
Now we have one x-term so we have 5y + x.
 
        
                    
             
        
        
        
The situation that represents the expression 2 - 5 is (a) the temperature was 2°C and has decreased by 5°C
<h3>How to determine the situation?</h3>
The expression is given as:
2 - 5
When the expression illustrates change in temperature, the interpretation can be:
An initial temperature of 2°C decreases by 5°C
Hence, the situation that represents the expression 2 - 5 is (a) the temperature was 2°C and has decreased by 5°C
Read more about expressions at:
brainly.com/question/723406
#SPJ1