6/8 full i have 12 gallons how many gallons are in 6/8 and add work : 3

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).

The circle below is centered at the point (3, 1) and has a radius of length 2. what is the equation?