Last summer, a lake's average water level was 20 ft. This summer, the lake's average water level was 11 feet. What was
the percent change in the lake's average level?

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a.about 4 b.about 8 c.about 40 d.about 21

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

Need on this geometry question. explain how you did it.