Which of the following is a solution to the quadratic equation x2-3x-54=0
A. 9
B. -57
C. 27
D. 2

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Which math sentence can be used to determine if the triangle is a right triangle?

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?