Geologists study the density of seismic activity in a region by comparing the number of earthquakes to the area of the region. the seismic activity density of a region is found using the formula:
seismic activity density = startfraction number of earthquakes over area of land affected endfraction. the state of california covers approximately 103,718 mi2, and has a seismic activity density of 0.0964 earthquakes per square mile. the state of alaska covers approximately 570,641 mi2, and has a seismic activity density of 0.0491.

using this data and rounding to the nearest whole number, alaska had more earthquakes than california for the year.

why would the seismic activity density of the year for alaska be smaller than for california if alaska had more earthquakes?

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday

Simplify each expression for 18, 20, and 21