Answer:
638.54-159.50+×> 500
Choose 3
Step-by-step explanation:
638.54-159.50=488.04 
So the number added must make the value greater or equal to 500
 
        
             
        
        
        
Answer:
15
Step-by-step explanation:
hope this helps
 
        
             
        
        
        
Answer:
X' = (-3 , -5)
Y' = (-1, -1)
Z' = (4, -8)
General rule: (x,y) = (y, -x)
I am 1 brainly away from the next rank, your help would be appreciated
 
        
             
        
        
        
The discriminant is  b^2 -4ac
a = 1
b = -2
c = 4
discriminant = 4 -4 * 1 * 4 =
4  -16 = 
 -12
I get MINUS 12 as the answer but that isn't one of the choices.
        
             
        
        
        
Volume is Length x width x height. So what are three numbers that multiply to 90?
30x30x30=90