Try to do
1.(-2)-(-4)+(-3)-5
2.(-2)^2(-3)
(-32(-9)
3. ----------------
(-36)
(-3)^2(+4)^2
4.--------------------
(-6)^2
5.In Beijing,the temperayure in moring is 5^oC.In the afternoon, the temperature rises
by 2^oC.At night,the temperature falls down to -10^oC.Find the different between temperature in the afternoon and at night
問暑期功課
2007-08-10 6:28 pm
回答 (2)
2007-08-10 8:11 pm
✔ 最佳答案
1)(-2) - (-4) + (-3) - 5
= -2 + 4 - 3 - 5
= -6
2)
(-2)^2(-3)
= (4)(-3)
= -12
3)
[(-32)(-9)] / (-36)
= (-32) / 4
= -8
4)
[(-3)^2(+4)^2] / (-6)^2
= [(-3)^2(+2)^2(+2)^2] / [(+2)^2(-3)^2] >>> 4^2 = (2^2)(2^2); -6^2 = (2^2)(-3^2)
= 2^2
= 4
5)
afternoon temperature = morning temperature + 2 = 5 + 2 = 7^oC
different temperature = night temperature - afternoon temperature
= (-10) - (+7)
= -17^oC
2007-08-10 8:05 pm
1.(-2)-(-4)+(-3)-5=-2+4-3-5=-6
2.(-2)^2(-3)=4*(-3)=-12//
3.(-32(-9))/(-36)=-8//
4.(-3)^2(+4)^2/(-6)^2=9(16)/36=4//
2.(-2)^2(-3)=4*(-3)=-12//
3.(-32(-9))/(-36)=-8//
4.(-3)^2(+4)^2/(-6)^2=9(16)/36=4//
收錄日期: 2021-04-13 14:02:48
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070810000051KK01216