Answer:
acute and obtuse
Step-by-step explanation:
the acute is less than 90 degrees and obtuse is more than 90 degrees
 
        
             
        
        
        
Answer:
C 
Step-by-step explanation:
 
        
             
        
        
        
Length= 5x-2 because 15x^2-10x-9x+6 is (5x-2) and (3x-2) 
LW=A
L={(5x-2)(3x-2)}/(3x-2)=5x-2
        
             
        
        
        
Answer:
19
Step-by-step explanation:
Given 2 sides of a triangle then the third side x is
difference of 2 sides < x < sum of 2 sides , that is
18 - 2 < x < 18 + 2
16 < x < 20
Then the largest possible length of the third side is 19
 
        
             
        
        
        
Ms. Rochelle would have 4 groups of 6 students, then there would be a group of 5 students.