The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. Approximately what percent of bags contain between 69 and 73 potato chips?

#12 the answer is the third option

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.

the answer is c.

perimeters = 3√10/5

areas = 90/25

i got it down chief.