河南周口地区洪山乡某学校2022-2023学年数学九上期末综合测试试题含解析

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2022-2023
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᪷├ÑᑭÞ=-×ÏÐḄᑭÞX├ÑᦪÝᑡ:;<§(2)ßn×ÏÐØÒxÊᐗ
᪷n×ḄàᑭX├ÑḄ×ᦪ=90Êᐗ
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ÕᙳnᕜḄ├ÑÝ@25-22,----------X1+8=14,0.5ᑣêÔ
ÕᙳnᕜḄ├ÑᑭÞ@(22-15)X14=98(Êᐗ)§(2)ßn×ÏÐØÒxÊᐗ
᪷⚪çå@(25-X-15)(8+2x)=90,åxi=LX2=5,Ìx=lÔ
├ÑᦪÝ!8+2X1=10(×)§Ìx=5Ô
├ÑᦪÝ!8+2X5=18(×)
!Mëìíîïð
ᑣx=5,êÔn×ÏÐḄÑÒ!25-5=20(Êᐗ)
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