The perimeter of a triangle is 30 units. if it is dilated with respect to origin by a scale factor of 0.5, what is the perimeter of the resulting triangle?

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

Does the point (1, sqrt 7) lie on circle shown.

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a