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答案好的话30悬赏y varies inversely as the square of x and directly

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答案好的话30悬赏
y varies inversely as the square of x and directly as the cube z and the variables are connect by the equation y=kz³/x.Where k is constant.
Given that
x 1 2 b
y 10 20 40
z a 8 32
(a)Find the value of k
(b)Hence find the values of a
(c)Hence find the values of b
先翻译后给出答案
答案好的话30悬赏y varies inversely as the square of x and directly
y的平方成反比x和z多维数据集和变量是直接连接的方程y = kz& # 179;/ x.k是恒定的.
假定
x 1 2 b
y 10 20 40
z 8 32
(一)发现k的价值
(b)因此找到的值
(c)因此找到b的值
先翻译后给出答案 再答: 只能帮你到这咯