Which of the following equations demonstrate that the set of polynomials is not closed under the certain operations? a. division: (x^2+2x) / (x+1) = x+ x/x+1 b. multip.: (3x^4++x^3)= -6x^6+ x^7+x^6 c. addition: (3x^4+x^3)+(-2x^4+x^3)= x^4 + 2x^3 d. multip.: (x^2+2x)(x+1)= x^3 +3x^2+2x

On a architect's drawing of a house, 1 inche representa 1.5

Which number produces a rationale number when multiplied by 1/5

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.