Cho hình thang cân ABCD(AB//CD) có góc A= 130 độ . Tính các góc còn lại của hình thang ABCD

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

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

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