The answer is A.) Yo también
The other choices mean 
B. And you? 
C. See you later or bye
        
                    
             
        
        
        
Answer:No, it didn't affect the inequality sign because we multiplied and divided by a negative number. In the 4th operation, the inequality sign changed because we divided by a negative number
Step-by-step explanation:
 
        
             
        
        
        
Answer:

Step-by-step explanation:
→ Substitute in the numbers

→ Simplify

 
        
             
        
        
        
Answer:
x = -7 2/3, y = 1 1/3 and z = 5 1/3.
Step-by-step explanation:
2x+4y+3z=6    .....  1
x-2y+z=-5        ...... 2
-x-3y-2z=-7      .......3
Add equations 2 and 3 to eliminate x:
-5y - z = -12   .....4
Multiply equation 2 by - 2:
-2x + 4y  - 2z = 10
Add this to equation 1:
8y + z = 16   ........ 5
Now add equation 4 to equation 5:
3y = 4
y = 4/3 = 1 1/3.
Now find z by substituting for y in equation 4:
-5(4/3) - z = -12
z = 12 - 20/3
z = 36/3 - 20/3 = 16/3 = 5 1/3.
Finally, we find x by substituting for y and z in equation 1:
2x + 4*4/3 + 3*16/3 = 6
2x = 6 - 16/3 - 16
2x =  18/3 - 16/3 - 48/3 = -46/3
x = 23/3 =  7 2/3.
 
        
             
        
        
        
Answer:
40 minutes
Step-by-step explanation:
12 envelopes every 10 minutes.
48 envelopes = 40 minutes