Vectors are drawn from the center of a regular n-sided polygon in the plane to the vertices of the polygon. show that the sum of the vectors is zero. (hint: what happens to the sum if you rotate the polygon about its center? )

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2