General solution for y'''-y''+4y'-4y=5x-e^(-x)+sin(3x)

Which expression is the factorization of x^2+10+21

Which polygon is she in the process of constructing ?

An architect builds a model of a park in the shape of a rectangle. the model is 40.64 centimeters long and 66.04 centimeters wide. one inch equals 2.54 centimeters. use the ratio table to find the ratio of the length to the sum of the length and width in inches and in simplest form. length 40.64 width 66.04 a. 8: 21 b. 13: 21 c. 21: 13 d. 21: 8