Let A=ia1 + ja2 + ka3
B= ib1 +jb2 =kb3 and
C=ic1 + jc2 +kc3
B.C =b1c1 + b2c2 +b3c3 is a scaler and so
A.(B.C) = (b1c1 + b2c2 +b3c3)(ia1 +ja2 +ka3)
A.(B.C) = ia1b1c1 +ja2b2c2 +ka3b3c3 . . . . . . . . . . .(1)
A.B = a1b1 + a2b2 +a3c3 is a scaler and
(A.B).C = (a1b1 + a2b2 +a3c3)(ic1 + jc2 +kc3)
(A.B).C = ia1b1c1 + ja2b2c2 + ka3b3c3 . . . . . . . . . . (2)
RHS’s of (1) and (2) are identical and so
the LHS’s should be equal and hence it follows that
A.(B.C) = (A.B).C
“que lo que” “qué pasa” “oye pa”
Answer:
1) Juchitán es una ciudad mexicana donde las costumbres cambian mucho. Falso
2) Los hombres juchitecas no administran el dinero de la familia. Cierto.
3) Los hombres tienen el control del sistema económico juchiteca. Falso.
4) Para las mujeres juchitecas es muy importante no decir su edad, especialmente cuando son mayores. Falso.
5) Frida Kahlo admiraba a las mujeres juchitecas. Cierto
Explanation:
1) Juchitán is a Mexican city where customs change a lot. False
2) Juchiteca men do not manage family money. True
3) Men have control of the juchiteca economic system. False
4) For Juchiteca women it is very important not to say their age, especially when they are older. False
5) Frida Kahlo admired Juchitecan women. Desert
Afro–Latin Americans or Black Latin Americans (sometimes Afro-Latinos or Afro-Latinx), are Latin Americans of significant or mainly African ancestry. The term Afro–Latin American is not widely used in Latin America outside academic circles.
Correct answer : C. miran
English translation : Ricardo and Alberto look at the paintings in the exhibition
