In which the value of the 7 is ten times greater than the value of the 7 in 7,215.

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

Jim had 15 minutes to do 5 laps around his school what would his time be

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart