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Clearnote
Q&A
Junior High
Mathematics
求教學
Mathematics
Junior High
about 1 yearago
豪
求教學
my 以四捨五入法取到整數位) 繁瑣的數 可利用計 輔助喔! (1)每上升100公尺,氣溫下降0.6度, 所以每上升1公尺,氣溫下降0.006度, 由題意可列式y=28-0.006x,所以,是x的一次函數。 (2)x=3952時,y=280.006x3952=28-23.712=4.288, 所以玉山主峰山頂的溫度約為攝氏4度。 ◆隨堂練習 已知「標準體重(公斤)=[身高(公分)-70]×60%」是世界衛生組 織計算女性標準體重的公式。設某女性的身高為x公分、標準體重 為y公斤,則: (1) 列出 x與y的關係式,並判斷,是否為x的函數。 (2)若小妍的身高為160公分,則他的標準體重是多少公斤?
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