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
1. Las fresas son rojas
2. En el verano me gusta llevar blusas sin mangas
3. Juanita esta cansada.
4. Son los zapatos de Daniel.
5. Tu estudias español? - porque a mi me gusta el español.
6. Preparo la comida en la cosina, no en la sala.
7. Mi familia y yo vivimos en California
8. Mis gatos son muy intelligentes
9. Es una zanahoria
10. Que comes cuando tienes hambre?
11. Yo tomo agua cuando me da sed.
Answer:
This is another example of correct use of vocabulary depending on context and knowledge of the topic. Thus, the answers and their explanations, would be as follows:
1. Innovar es un concurso argentino para: inventores (inventors). Innovar is a contest in Argentina for innovators.
2. El chileno Raúl Ramírez inventó una máquina para construir: muros (walls). This guy invented the machine CINVA-RAM, which allowed people from poor households to put on their walls with little cost.
3. La argentina Cecilia Bouzat investigó sobre: Las neuronas (neurons). She was born in 1961 and has been awarded several times for her studies in neurosciences. She was born in Bahía Blanca, Argentina.
4. Ellen Ochoa es: Astronauta e inventora (astronaut and inventor). She is an Hispanic-American woman who became an astronaut and also an engineer. She was born in Los Angeles from Hispanic parents.
5. Si estás en Colombia y quieres ver animación, dices que quieres ver: caricaturas (cartoons). This would be the best option from the two, because although in Colombia, there is a coloquialism that is "dibujitos", they refer to both cartoons and animated films. Since the question is related to animated features, then the best option is cartoons (caricaturas)
Explanation:
no entiendo qué es la pregunta
1 usted. 2 Yo ceno en el restaurante francés. 3 el toma el café 4 tú quiere las papas fritas
