AMC 8 2023 Problem 3

AMC8 2023 年第 3 题

表达式与运算★☆☆☆☆
Wind chill is a measure of how cold people feel when exposed to wind outside. A good estimate for wind chill can be found using this calculation:
(\textwindchill)=(\textairtemperature)−0.7×(\textwindspeed)(\textwind chill) = (\textair temperature) - 0.7 \times (\textwind speed)
where temperature is measured in degrees Fahrenheit (∘\mathrmF^{\circ}\mathrmF) and wind speed is measured in miles per hour (mph). Suppose the air temperature is 36∘\mathrmF36^{\circ}\mathrmF and the wind speed is 18 mph. Which of the following is closest to the approximate wind chill?
风寒指数衡量人们在室外受风时感受到的寒冷程度。可用下面的关系式较好地估算风寒指数：
(风寒指数)=(气温)−0.7×(风速)\text{(风寒指数)} = \text{(气温)} - 0.7 \times \text{(风速)}
其中气温以华氏度（∘\mathrmF^{\circ}\mathrmF）计量，风速以英里每小时（mph）计量。设气温为 36∘\mathrmF36^{\circ}\mathrmF，风速为 18 mph。下列哪一项最接近此时的风寒指数？
  1. A.18
  2. B.23
  3. C.28
  4. D.32
  5. E.35

正确答案 · Correct Answer

B

解析 · Solution

解析整理中

继续练习

免费刷 2023 整卷 →登录解锁诊断（看你哪儿弱）→

真题版权归属 MAA（AMC）。本站仅供学习用途。版权方如有异议，请联系本站予以下架。

Problems © MAA (AMC). This site is for study purposes only. Rightsholders may contact us for removal.