Write an equation for the situation A fraction f multiplied by 4 equals 1/2

where is the graph? need more info

320ft

step-by-step explanation:

120 divided by 3 equals 40

40 times 4=160

160 times 2=320

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  

d.

21

i did this one. so you should get it right.