Un campesino tiene 240 matas de durazno. En cada cosecha recoge un promedio de 5 dpcenas de dirazno por cada mata y vende cada durazno a 96,75bolivares. Si los gastos de mantenimientos accienden a 625000bolivares. Cuanto gana en cada cosecha?

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !

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.