Answer:
-9xy (xy+xy)-3
Step-by-step explanation:
Answer:
Re-submit ur question sweet heart
Answer:
y+30
Step-by-step explanation:
the sum of the numbers is 15y
the new sum after increase each number by 30 is 15y+450
the new mean 15y+450/15
= y+30
Answer: yes
Step-by-step explanation: