2. 外语
  3. If W = XYZ, then which of the following is an expression for Z in terms of W, X, and Y?

If W = XYZ, then which of the following is an expression for Z in terms of W, X, and Y?

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问题 If W = XYZ, then which of the following is an expression for Z in terms of W, X, and Y?
选项 A、XY/W
B、W/XY
C、WXY
D、W-XY
E、W+XY
答案B
解析 The correct answer is B. Don’t let the fact that there are no numbers in this math problem confuse you! Simply remember that W, X, Y, and Z each represent some number, and perform the correct mathematical operations to isolate Z on one side of the equation, as follows:
W=XYZ
W/XY=Z
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