100x + 50y + 50z = 10,500 10x + 100y = 1,500 200x + 50y + 150z = 25,500 solve for each variable

BONUS: Find the matrix of the transformation on p2 that first reflects a vector about the x axis. then rotates the resulting vector by 7/3 counterclockwise. and finally projects orthogonaly (perpedicularly) onto the y axis. V3 1 2 V3 1 Oc. none of these 글이

A 21-foot rope is cut into 2 pieces. Seven less than three times the length of the longer rope piece x is five times the length of the shorter piece, which is (21-x)ft.

Assume that T is a linear transformation. Find the standard matrix of T. 7x T: R² →R² first rotates points through radians and then reflects points through the horizontal x₁-axis. A= (Type an integer or simplified fraction for each matrix element. Type exact answers, using radicals as needed.)