What is 0.20 as a fraction?

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.

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.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18