这是一道英语数学题,请大家快来帮帮忙吧! 谢谢!
Inaclassof42students,themeanheightis1.62m.Ifthemeanheightof18studentsis1.54m,themeanh...
In a class of 42 students, the mean height is 1.62 m. If the mean height of 18students is 1.54 m, the mean height of the rest is______ m.
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