f.3 math 好急!!!!!!!!!!!!!!!!!

2009-09-02 1:10 am

it is given that the distance between A(3, -5) and B(h,1) is h.
Find the value of h.
Solution: ????

要有steps丫...thx~!!

更新1:

to vincentyu1996 : 佢條題目得咁多咋喎.... 冇話有a. b. 2題.......

回答 (2)

2009-09-02 1:55 am

✔ 最佳答案

Distance AB = h

sqrt[(h - 3)2 + [1 - (-5)]2] = h

sqrt(h2 - 6h + 45) = h

Squaring both sides yields:

h2 - 6h + 45 = h2

6h = 45

h = 15/2

參考: Physics king

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2009-09-02 1:15 am

請出示那條數o既equation,如果唔係就答唔到你個solution!

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