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celeste2627
23.11.2020 •
Mathematics
Raul compro 2 refrescos y 5 chocolates a $88. Miriam compro 1 refresco y 3 chocolates a $50 ¿Cuál será el costo de los refrescos y de los chocolates
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Ответ:
Llamemos x a los refresos e y a los chocolates, nos queda el siguiente sistema de ecuaciones. Despejamos x en la ecuación de abajo y nos queda . Sustituimos en la ecuacion superior y nos queda y sustituyendo la y en la ecuacion despejada nos queda . Por lo tanto los refresco valens 14 y los chocolates 12.
Refrescos 14
Chocolates 12
Ответ:
-1
Step-by-step explanation:
because if you put it in a equation for you get x^2-4=3x therefore you use the quadratic formula and solve the two answers you get are 4 and -1 so since its negative solution it must be -1 must be the square