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各位知識朋友 , 入黎幫我手 ar !!! ( 數學 F.1 ) (53)
發問:
各位知識朋友 , 入黎幫我手 ar !!!我有幾條數學問題唔識 , 幫手解答 ar( 數學 F.1 )!!!!!!!!!!!!!!!1.Adding which two consecutive trigular numbers will result in each of thefollowing square numbers?(a)９(b)３６(c)８１2.Jojo is now 12 years old. 5 years later , Jojo will be 1∕3 as old as hismother. Find the age of his mother now . (only want... 顯示更多 各位知識朋友 , 入黎幫我手 ar !!! 我有幾條數學問題唔識 , 幫手解答 ar( 數學 F.1 )!!!!!!!!!!!!!!! 1.Adding which two consecutive trigular numbers will result in each of the following square numbers? (a)９ (b)３６ (c)８１ 2.Jojo is now 12 years old. 5 years later , Jojo will be 1∕3 as old as his mother. Find the age of his mother now . (only want the formula)
最佳解答:
1.b 2.x + 5= (12+5)x3 x+5=17x3 x+5-5=51-5 x=46 so,his mother now is 46 years old.
其他解答:
x + 5= (12+5)x3 x+5=17x3 x+5-5=51-5 x=46 2007-12-27 13:31:18 補充： 1的三次方十2的三次方等於91的三次方十2的三次方 3的三次方等於36
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