Answer:
It takes 70 minutes for 9 team members (painting 60 sq ft per minute) to paint a 4200 sq ft wall.
Step-by-step explanation:
According to the situation the calculation is shown below:-
= 
= 240 sq ft each member of the team in 36 minutes
= 
= 6.67 sq ft each member of the team within 1 minute

= 60 sq ft for every 9 team members in one minute
= 
= 70 minutes (or 1 hour and 10 minutes)
Hence, the 70 minutes is taken for 9 team members
Answer:
-10
Step-by-step explanation:
the answer is -10
I hope it helps you
Answer:
3.65102725271
Step-by-step explanation:
The correct answer would be:
-10x + y = 4
10x - y = -4
Answer:
从 1 到 20 有 8 个素数。它们列在下面:2、3、5、7、11、13、17 和 19。