第1題:(-2)(-4)(-5)(-6)
答案:-720
第2題:-2-(-2/3+1/2)÷(1/6)
答案:-3
第3題:6-5x/4-x/2=6(方程式)
答案:-2又4/7
第4題:The height of a rectangular container is 80cm.The length and
the width of the base are 60cm and 45cm respectively.If 75.6L of water is poured into th container,find the distance between the
water level and the top of the container.(Hint:1L=1000cm3)
答案:52cm
可不可以幫我解答這幾題數學題(有答案但計唔到同樣ge答案)
2009-07-04 11:12 pm
回答 (1)
2009-07-04 11:52 pm
✔ 最佳答案
第1題: (-2)(-4)(-5)(-6)
=(8)(30)
=240
第2題:
-2-(-2/3+1/2)(1/6)
=-2-(-1/6)(1/6)
=-2+(1/6)(1/6)
=-2+1
=-1
第3題:
6- 5x/4 - x/2=6
24-5x-2x=6
24-7x=6
7x=18
x=18/7
=-2又4/7
第4題:
75.6L=75.6x1000cm3
=75600cm3
the water level=75600/(60x45)
=28cm
the water level and the top of the container=80-28
=52cm
收錄日期: 2021-04-23 20:43:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090704000051KK00980