Which description most accurately fits the definition of a combination? an arrangement of beads on a necklace with a clasp. an arrangement of objects on a key ring. a selection or listing of objects in which the order of the objects is important. a selection or listing of objects in which the order of the objects is not important.

He concluded that a heavier object dropped from the same height as a lighter object will land

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.