Answer:

Step-by-step explanation:
srry if its wrong but I think it's right :)
btw for the first one
p=19.53
Answer:

Step-by-step explanation:
N.O = 4
N is midpoint of M.0
Meaning M.N also has to be 4
4+4= 8
N.P = 6
0.P = 2
8+ 2 = 10
<span>Changing the grouping of the addends should not change the sum, according to the associative property of addition. You might group them differently with (50 + 3) + 47, so that you have 50 + (3 + 47). You might not regroup them with (16 + 4) + 5 rather than 16 + (4 + 5).</span>
For example, if the question is to simplify square root x^7, you do 7/2=3......1
so the answer would be x^3 times square root x