机智多谋的小伙伴们，求这道题的详细做法，多谢了！ 题意：借物喻人的小练笔 要求：不少于300字
\u673a\u667a\u7684\u5c0f\u4f19\u4f34\u4eec\uff0c\u6c42\u6559\u8fd9\u9053\u9898\u7684\u8be6\u7ec6\u505a\u6cd5\uff0c\u591a\u8c22\u5566(1)A\u5730\u4f4d\u7f6e\u5982\u56fe\u2460\u6240\u793a (2)\u7531\u9898\u610f\uff0c\u4e59\u7684\u901f\u5ea6\u4e3a
150
75(km/h)\u3002 2
90
1.2(h)\uff0c\u2234M(1.2\uff0c0)\uff0c 75
\u6240\u4ee5\u70b9M\u8868\u793a\u4e59\u8f661.2\u5c0f\u65f6\u5230\u8fbeA\u5730\u3002 (3)\u7531\u9898\u610f\uff0c\u7532\u7684\u901f\u5ea6\u4e3a
\u7532\u8f66\u7531B\u5730\u5230C\u5730\u7684\u65f6\u95f4\u4e3a
60
60(km/h) 1
6090
2.5(h) 60
\u7532\u8f66\u7684\u51fd\u6570\u56fe\u8c61\u5982\u56fe\u2461\u6240\u793a\u3002 \u5f530\u2264x\u22641\u65f6\uff0c\u7531\u9898\u610f\u8bbey=kx+60 \u2235\u70b9\uff081\uff0c0\uff09\u5728\u5176\u4e0a\uff0c\u2234k+60=0\u3002\u2234k=\uff0d60. \u2234y1=\uff0d60x+60
\u5f531<x\u22642.5\u65f6\uff0c\u8bbey1=kx+b\u3002 \u2235\u70b91\uff081\uff0c0\uff09\u3001(2.5\uff0c90)\u5728\u5176\u4e0a\uff0c \u2234
kb0k60
\u89e3\u5f97
2.5kb90b60
\u2234y1=60x\uff0d60
\u7efc\u4e0a\u6240\u8ff0\uff0c\u5f530\u2264x\u22641\u65f6\uff0cy1= \uff0d60x+60\uff1b
\u5f531<x\u22642.5\u65f6\uff0cy1=60x\uff0d60. (4)\u7531\u9898\u610f
6060x
\u7231\u8f85\u5bfc
\u89e3\uff1a\uff081\uff09\u7531\u9898\u610f\u5f97\uff0c\u7532\u65c5\u884c\u793e\u7684\u8d39\u7528=2000\u00d70.75a=1500a\uff1b \u4e59\u65c5\u884c\u793e\u7684\u8d39\u7528=2000\u00d70.8\uff08a\ufe631\uff09=1600a\ufe631600\uff1b \uff082\uff09\u5c06a=20\u4ee3\u5165\u5f97\uff0c\u7532\u65c5\u884c\u793e\u7684\u8d39\u7528=1500\u00d720=30000\uff08\u5143\uff09\uff1b \u4e59\u65c5\u884c\u793e\u7684\u8d39\u7528=1600\u00d720\ufe631600=30400\uff08\u5143\uff09 \u223530000\uff1c30400\u5143 \u2234\u7532\u65c5\u884c\u793e\u66f4\u4f18\u60e0\uff1b \uff083\uff09\u8bbe\u6700\u4e2d\u95f4\u4e00\u5929\u7684\u65e5\u671f\u4e3aa\uff0c \u5219\u8fd9\u4e03\u5929\u5206\u522b\u4e3a\uff1aa\ufe633\uff0ca\ufe632\uff0ca\ufe631\uff0ca\uff0ca+1\uff0ca+2\uff0ca+3 \u2234\u8fd9\u4e03\u5929\u7684\u65e5\u671f\u4e4b\u548c=\uff08a\ufe633\uff09+\uff08a\ufe632\uff09+\uff08a\ufe631\uff09+a+\uff08a+1\uff09+\uff08a+2\uff09+\uff08a+3\uff09=7a \u2460\u8bbe\u8fd9\u4e03\u5929\u7684\u65e5\u671f\u548c\u662f63\uff0c\u52197a=63\uff0ca=9\uff0c\u6240\u4ee5a\ufe633=6\uff0c\u53736\u53f7\u51fa\u53d1\uff1b \u2461\u8bbe\u8fd9\u4e03\u5929\u7684\u65e5\u671f\u548c\u662f63\u76842\u500d\uff0c\u5373126\uff0c\u52197a=126\uff0ca=18\uff0c\u6240\u4ee5a\ufe633=15\uff0c\u537315\u53f7\u51fa\u53d1\uff1b \u2462\u8bbe\u8fd9\u4e03\u5929\u7684\u65e5\u671f\u548c\u662f63\u76843\u500d\uff0c\u5373189\uff0c\u52197a=189\uff0ca=27\uff0c\u6240\u4ee5a\ufe633=24\uff0c\u537324\u53f7\u51fa\u53d1\uff1b \u6240\u4ee5\u4ed6\u4eec\u53ef\u80fd\u4e8e\u4e94\u67086\u53f7\u621615\u53f7\u621624\u53f7\u51fa\u53d1\uff0e
抄百度
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