Answer:
1.

2.

5.

Step-by-step explanation:
It is correct on Edge!
Give thanks please!
Answer:
1. Should stay the same since you can't combine any further
2. 6x²-6x+16
Answer:
v=58
Step-by-step explanation:
All we have to do here is plug in the numbers for the corresponding letters. That means we are left with v=13+9*5. So then all we have to do is put it in the calculator and we get 58.
Let
be the weight of i-th player.
1. If the mean weight of 4 backfield members on the football team is 221 lb, then

2. If the mean weight of the 7 other players is 202 lb, then

3. From the previous statements you have that

Add these two equalities and then divide by 11:

Answer: the mean weight of the 11-person team is 
The perimeter of a square is the sum of all its sides' lengths
That means: perimeter =4*(7m+1)/3