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

i think the answer is C, (-1 + 21) (i + 5i)

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i just took the test and got a 92% but it didnt tell me which ones were wrong. thats my best guess though. i hope it helps!

answer: your gay

step-by-step explanation:

you dont know math

if farmer matt works for 8 hours a day, how many days will it take him to completely plant 12 rows of crops? each batch of cookies needs 3/4 cups of sugar.

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