modelos lineales.docx - Salvador Daniel Martnez piedras...

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Salvador Daniel Martínez piedras Prof. Clara Eugenia Estrada P. Matricula: 2908281 Modelos lineales
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1. Para los siguientes enunciados deberás realizar el proceso para resolverlo y fundamentar ese proceso: a. Si 12 bultos de cemento y 6 bultos de yeso cuestan $1020, mientras que 9 bultos de cemento y 13 bultos de yeso cuestan $1530, ¿Cuánto se tiene que pagar por 3 bultos de cemento y 2 bultos de yeso? 12c+6y=1020 9c+13y=1530 3c+2y=? C=1020-6y/12 c=1530-13y/9 Y=9(1010-6y) =12(1530-13y) 9180-54y=18360-156y 156y-54y=18360-9180 102y=9180 Y=90 C=9c+13(90)=1530 C=1530-1170/9 C=40 3c+2y=120+180=300 b. Una máquina trilladora A para trigo realiza un trabajo en 3 días; y otra, llamada B, puede realizarlo en 5 días. ¿En cuánto tiempo terminarán el trabajo ambas máquinas? A=3 días B=5 días 3*5=15 3+5=8 15/8= 1.875 R= 1.875 días = 1 día y 21 hrs c. Joaquín invirtió su dinero a 12% y a 15% obteniendo unos intereses de $3000. Si las cantidades que invirtió hubieran sido intercambiadas, habría tenido un retorno de $2940. ¿Cuánto dinero invirtió a 15%?
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  • Winter '16
  • martha
  • Semana, Máquina, Dinero, 5 días, 3 días

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