În tabelul de mai jos este prezentată repartiţia elevilor unei clase a VIII-a, în funcție de mediile
obținute la matematică, pe semestrul I.
Media 4 5 6 7 8 9 10
Număr elevi 1 3 6 7 5 4 2
Numărul elevilor din această clasă care au obținut la matematică, pe semestrul I, cel puțin media 6 și cel
mult media 9 este egal cu ….

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

the area of ​​the surface of the rectangular prism here is 250 cm2, which is the surface of the shading

step-by-step explanation:

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.