Find that length of the side and perimeter of the square whose area is given below 49sq. m

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

Can anyone explain to me how to do this? anything will .