已知等腰梯形OABC的四个顶点时O(0,0)A(3/2,1)B(s,t)C(7/2,0)...已知:等腰梯形OABC的四个顶点是O(0,0),A(3/2 ,1),B(s,t),C(7/ ,0),直线y=x+b与梯形的上底相交.(1)求s与t的值,并在直角坐标系中画出等腰梯形OABC;
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![已知等腰梯形OABC的四个顶点时O(0,0)A(3/2,1)B(s,t)C(7/2,0)...已知:等腰梯形OABC的四个顶点是O(0,0),A(3/2 ,1),B(s,t),C(7/ ,0),直线y=x+b与梯形的上底相交.(1)求s与t的值,并在直角坐标系中画出等腰梯形OABC;](/uploads/image/z/5934922-34-2.jpg?t=%E5%B7%B2%E7%9F%A5%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2OABC%E7%9A%84%E5%9B%9B%E4%B8%AA%E9%A1%B6%E7%82%B9%E6%97%B6O%280%2C0%29A%283%2F2%2C1%29B%28s%2Ct%29C%287%2F2%2C0%29...%E5%B7%B2%E7%9F%A5%EF%BC%9A%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2OABC%E7%9A%84%E5%9B%9B%E4%B8%AA%E9%A1%B6%E7%82%B9%E6%98%AFO%280%2C0%29%2CA%283%2F2+%2C1%29%2CB%28s%2Ct%29%2CC%287%2F+%2C0%29%2C%E7%9B%B4%E7%BA%BFy%3Dx%2Bb%E4%B8%8E%E6%A2%AF%E5%BD%A2%E7%9A%84%E4%B8%8A%E5%BA%95%E7%9B%B8%E4%BA%A4.%281%29%E6%B1%82s%E4%B8%8Et%E7%9A%84%E5%80%BC%2C%E5%B9%B6%E5%9C%A8%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%E7%94%BB%E5%87%BA%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2OABC%EF%BC%9B)
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