Who is brock obama because i got a paper to write i dont know wo he is

To start off, it's Barack Obama not Brock Obama lol. Barack Obama was the 44th president of the United States.

Explanation:

That should give you a place to start. He also wrote a biography so you can read that too.

You mean Barack Obama, he served as the 44th president of the united states, he ran against John McCain.

Explanation:

He was the first African American president of the United States. Obama was born in Honolulu, Hawaii, in 1961. He was sworn in a second term in 2012, and his vice president was Joe Biden.

the answer would be the third option, "no, ariel should have added 9^2 and 12^2 and compared that to 15^2."

this is found through the pythagorean theorem, which is a^2 + b^2 = c^2.

this is the correct way of solving the problem:

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225