Simplify 5^-4/5^3
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If the discriminant if a quadratic equation is 4 which statement describes the roots?

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.

Which term describes the point where the perpendicular bisectors of the three sides of a triangle intersect?