Which expression is equivalent to the expression 4(6+y)+7?

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

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)

Find the value of the combination. 5 c 5