Which of the following are solutions to the quadratic equation? Check all that apply x^2 + 12x + 36 = 7

The product of two negative rational numbers is always zero sometimes zero never zero

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10