Mr. berglund is estimating to see how long it will take for students to complete a drill in p. e he uses the times 45.2 seconds, 56.2 seconds, and 33.9 seconds and estimates by rounding to the nearest or overstimate? how can you tell

5.7622

step-by-step explanation:

the ten thousandths place is the 2. you round it up if, that number in whatever place is 5 or higher.

10+4√2 is the answer. i dont have the time to explain.

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.