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U is jointly proportional to V and W.Let k be the constant p

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U is jointly proportional to V and W.Let k be the constant proportionality.
= 不大明白他在说什么 球翻译!
咩贴全 If U = 2 when V = 5 and W = 4,find the value of k.
U is jointly proportional to V and W.Let k be the constant p
呃 不太会用中文解释 大概就是 U= K(VxW)
U 是 跟V W有关的 K是常数比例 反正就是公式那样的
然后就是2=4x5xk=20k 所以k=0.1