Step-by-step explanation:
May you reword it? I don't quite understand.
Answer:
a
Step-by-step explanation:
Answer:
Why???
Step-by-step explanation:
Answer:
Either :
1/2 10x+1/2 20y+1/2 10z
or
5x+10y+5z
Step-by-step explanation:
You're just multiplying everything by 1/2
25^2-13^2=456
456 square root is 21.354...
21