A rectangle has an area of21x+81square units. If the width is 3 units, what is the length of the rectangle?

Find the midpoint of the segment with the given endpoint k(-4,4) and l(6,12)

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube