Answer:
c: plane ptm
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The one on the left answer the 1st and the one on the right answers the 2nd
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Step-by-step explanation:
This is a multiplication problem.
We want to multiply 
We factor to get:
 
We now cancel out the common factors to get:
 
We now multiply the numerators and the denominators separately to get.
This simplifies to 
Therefore the simplified expression is 
 
        
             
        
        
        
Since complementary angles add to 90°, (4x - 1) and (5x + 19), also add to 90°.
Thus, lets form an equation:
90 = 5x + 19 + 4x - 1
72 = 9x
x = 9
Thus, the measure of angle B is 64°.