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Question
at 6 a.m., the temperature was -12°c. by 9 a.m., the temperature had risen by 8°c. by noon, the temperature was double what the temperature had been at 9 a.m. what two operations do you need to use to find the temperature at noon?
○ addition and subtraction
○ addition and multiplication
○ division and addition
○ multiplication and subtraction
Para encontrar la temperatura al mediodía, primero debemos calcular la temperatura a las 9 a.m. sumando el aumento de temperatura desde las 6 a.m. hasta las 9 a.m. (operación de adición). Luego, para encontrar la temperatura al mediodía, debemos multiplicar la temperatura a las 9 a.m. por 2 (ya que la temperatura al mediodía es el doble de la temperatura a las 9 a.m., operación de multiplicación). Entonces, las dos operaciones necesarias son adición y multiplicación.
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B. addition and multiplication