the area of a rectangle is (x^4+4x^3+3x^2-4x-4), and the length of the rectangle is (x^3+5x^2+8x+2). if the area = length x width , what is the width of the rectangle ?

Peaches cost $4.29 per pound. find the cost of two and a quarter pounds of peaches.

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.