what is 2 plus 2 i know the correct answer but some people says it equals 21 and i just wanna make sure

What could explain what happened when the time was equal to 120 minutes

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)