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Yesterday, between noon and midnight, the temperature went down by 
21.1^(@)F. If the temperature was 
-9^(@)F at midnight, what was it at noon?
Answer: 
^(@)F

Yesterday, between noon and midnight, the temperature went down by 21.1F 21.1^{\circ} \mathrm{F} . If the temperature was 9F -9^{\circ} \mathrm{F} at midnight, what was it at noon?\newlineAnswer: \square F { }^{\circ} \mathrm{F}

Full solution

Q. Yesterday, between noon and midnight, the temperature went down by 21.1F 21.1^{\circ} \mathrm{F} . If the temperature was 9F -9^{\circ} \mathrm{F} at midnight, what was it at noon?\newlineAnswer: \square F { }^{\circ} \mathrm{F}
  1. Find Noon Temperature: To find the temperature at noon, we need to add the temperature drop to the temperature at midnight.\newlineCalculation: Noon temperature = Midnight temperature + Temperature drop\newlineNoon temperature = (9F)+21.1F(-9\,^\circ\mathrm{F}) + 21.1\,^\circ\mathrm{F}
  2. Perform Addition: Now we perform the addition to find the temperature at noon.\newlineNoon temperature = 9°F+21.1°F-9\degree\text{F} + 21.1\degree\text{F}\newlineNoon temperature = 12.1°F12.1\degree\text{F}

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