Ans
2xy+3x+2xy+3x
Step-by-step explanation:
Just add like terms:
4xy+6x
630/105=6 minutes per dish
630/70=9 minutes per dish
15 minutes:2 dishes
630/15=42
It will take them 42 minutes to rinse 630 dishes together.
21.59-13.09= 8.5 cm
if its centered, it will same distance from the margin from the left and right.
So its distance from left or right margin is 8.5/2 = 4.25 cm
