Find the cosine of H Simplify your answer and write it as a proper fraction, improper fraction, or whole number

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?

Tom drove 206 miles in 3.9 hours. estimate his average speed.