启东数学作业本个题答案
\u542f\u4e1c\u4f5c\u4e1a\u672c\u6570\u5b66\u516b\u4e0a\u7b54\u6848\u3002\u6025\u6025\u6025\u6025\u3002\u6025\u4ec0\u4e48\u6025 \u4e0d\u505a\u4f5c\u4e1a\u4e0d\u4f1a\u6b7b \u7279\u522b\u662f\u6691\u5047\u4f5c\u4e1a \u8001\u5e08\u57fa\u672c\u4e0d\u4f1a\u770b\u7684 \u4f60\u4e0d\u4ea4\u4ed6\u4e5f\u4e0d\u80fd\u600e\u4e48\u6837 \u518d\u8bf4\u4e86 \u4f60\u6709\u540c\u5b66\u4e0d\uff1f\u4e0d\u4f1a\u4e92\u76f8\u4ea4\u6d41\uff1f
1\u3001\u8bbeA\u3001B\u4e24\u7ad9\u95f4\u7684\u8ddd\u79bb\u4e3axkm,\u5219
(2x-34)/70=(x+34)/52
\u89e3\u5f97x=122
2\u3001\u8bbe\u4e59\u7684\u901f\u5ea6\u4e3axkm/h,\u5219\u7532\u7684\u901f\u5ea6\u4e3a(3x+1)km/h
3x+(3-45/60)(3x+1)=25.2*2
\u89e3\u5f97x=321/65
列方程：X/4=X/8+X/40+27/60
解得：X＝4.5公里
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绛旓細灏忛鐨勫摝~浣滀笟44锛欳BBCD 6.浠庨《瑙掑嚭鍙戞妸杩欎釜瑙掑垎鎴愪袱涓浉绛夌殑瑙掔殑灏勭嚎 7. 3 2 涓夊垎涔嬩簩 涓夊垎涔嬩竴 8.15掳 30掳 9. 5 10.36掳108掳144掳 浣滀笟45锛欳ACDB 6.30 1:5 7.38掳37鈥 8.= 鍚岃鐨勪綑瑙掔浉绛 = 绛夎鐨勮ˉ瑙掔浉绛 9. 120 30 10.150掳11.45掳 16.315掳 45掳...
绛旓細=锛1/1+1/2+鈥︹+1/9锛-锛2/1+2/2+鈥︹2/8锛+鈥︹+锛7/1+7/2+7/3锛-锛8/1+8/2锛+7/1 =45-18+鈥︹+7/6-8/3+7/1 =27+鈥︹+7/6-8/3+7/1 =54/1787
