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11
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????w=7260000(?)
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23. ?: (1) ???A???? x ?????B ????(20?x )?1?
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?x=9 ??y???????y= 51( ?? ) 7?
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(3)?(2)????????????25??? ?5?125?5?25a?6??2036=120.
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5?k
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y?xx??2
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2
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22
?2??x=3??y=-0.1x+0.6x+0.9 ? y=-0.133+0.633+0.9=1.8 ???????1.8?? ?3?1?t?5?
19????0??5???????????? ???AB?y=kx+b ?AB??0?3???1?1.8?
?b?3?b?3?? ?? ?y= ?1.2x+3?2??
1.8?k?bk??1.2??
?X=5??y= ?3 ????5????-3?.?1?? ?2???1??B?5?-3??1?? ?????y??x?mx?n????B?5?-3??C?8?6?
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发表于 2019-9-13 23:46:11