Which lines are parallel? how do you know ?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

What are the coordinates of the image of p for a dilation with center (0, 0) and scale factor 2