Answer:
86° Fahrenheit
Step-by-step explanation:
F=1.8C + 32
C=30°
Plugging into the formula:

The Fahrenheit for 30° Celsius using the given formula is 86° Fahrenheit.
 
        
                    
             
        
        
        
The diagonals of a rectangle are congruent so set them equal to each other to get x = 2x - 7. isolate the variable (0 = x - 7 — x = 7) to get x = 7. the diagonals are seven.
        
             
        
        
        
Let 'c' represent the number of points Carlos scored.
2c - 7 = 31
c = 19 points
        
             
        
        
        
Answer:
It isn't possible.
Step-by-step explanation:
Let G be a graph with n vertices. There are n possible degrees: 0,1,...,n-1.
Observe that a graph can not contain a vertice with degree n-1 and a vertice with degree 0 because if one of the vertices has degree n-1 means that this vertice is adjacent to all others vertices, then the other vertices has at least degree 1. 
Then there are n vertices and n-1 possible degrees. By the pigeon principle there are two vertices that have the same degree.