Una compañía minera extrae mineral en dos minas. En la mina A éste contiene 1% de níquel y 2% de cobre; en la mina B es 2% níquel y 5% cobre.

¿Qué cantidad debemos extraer de cada mina para obtener 4 toneladas de níquel

y 9 de cobre?

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

Which equation is true? i. 56 ÷ 4·7 = 82 ÷ (11 + 5) ii. (24 ÷ 8 + 2)3 = (42 + 9)2 neither i nor ii ii only i and ii i only

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.