What is thesum of the two polynomials ? (-x^2+9)+(-3x^2-11x+4)

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)