x= -2 , y= 5 , = -4
(-8y) ÷ x ÷ 2z
=?
(-20z)÷2y÷(2x)
=?
正負數一小問
2007-10-01 9:50 pm
回答 (9)
2007-10-01 9:58 pm
✔ 最佳答案
(-8y) ÷ x ÷ 2z=(-8(5))÷(-2)÷2(-4)
= -2.5
(-20z)÷2y÷(2x)
=(-20(-4))÷2(5)÷(2(-2))
= -2
參考: ME
2007-10-01 11:21 pm
(-8y) ÷ x ÷ 2z
=-2.5
(-20z)÷2y÷(2x)
=-2
=-2.5
(-20z)÷2y÷(2x)
=-2
2007-10-01 10:26 pm
X = -2 , y = 5 , z = -4
( -8 y) ÷ x ÷ 2z
= ( -8 × 5) ÷ -2 ÷2 × -4
=( -40)÷ -2 ÷2 × -4
= +20 ÷2 × -4
= +10× -4
= -40
( -20z)÷2y÷(2x)
= (-20×-4)÷2×5÷(2×-2)
= +80÷2×5÷(2×-2)
= 40×5÷(2×-2)
= 200÷(-1)
= -200
( -8 y) ÷ x ÷ 2z
= ( -8 × 5) ÷ -2 ÷2 × -4
=( -40)÷ -2 ÷2 × -4
= +20 ÷2 × -4
= +10× -4
= -40
( -20z)÷2y÷(2x)
= (-20×-4)÷2×5÷(2×-2)
= +80÷2×5÷(2×-2)
= 40×5÷(2×-2)
= 200÷(-1)
= -200
2007-10-01 10:05 pm
you mean z=-4?
ifx= -2 , y= 5 , z= -4
1)(-8y)÷x ÷ 2z
=(-8X5)÷(-2)÷2(-4)
=(-40)÷(-2)÷(-8)
=(20)÷(-8)
=-5/4
2)(-20z)÷2y÷(2x)
=(-20)(-4)÷(2X5)÷(2)(-2)
=80÷10÷(-4)
=-2
ifx= -2 , y= 5 , z= -4
1)(-8y)÷x ÷ 2z
=(-8X5)÷(-2)÷2(-4)
=(-40)÷(-2)÷(-8)
=(20)÷(-8)
=-5/4
2)(-20z)÷2y÷(2x)
=(-20)(-4)÷(2X5)÷(2)(-2)
=80÷10÷(-4)
=-2
2007-10-01 10:03 pm
x= -2 , y= 5 , z= -4
(-8y) ÷ x ÷ 2z
=(-40)÷(-2)÷(-8)
=20÷-8
=-(5/2)
(-20z)÷2y÷(2x)
=80÷10÷(-4)
=8÷(-4)
=-2
(-8y) ÷ x ÷ 2z
=(-40)÷(-2)÷(-8)
=20÷-8
=-(5/2)
(-20z)÷2y÷(2x)
=80÷10÷(-4)
=8÷(-4)
=-2
參考: me
2007-10-01 10:00 pm
1
(-8y) ÷ x ÷ 2z
=(-8×5)÷(-2)÷(2×-4)
=(-40)÷(-2)÷(-8)
=20÷(-8)
=負2.5
2
(-20z)÷2y÷(2x)
=(-20×-4)÷(2×5)÷(2×-2)
=(80)÷(10)÷(-4)
=8÷(-4)
=負2
(-8y) ÷ x ÷ 2z
=(-8×5)÷(-2)÷(2×-4)
=(-40)÷(-2)÷(-8)
=20÷(-8)
=負2.5
2
(-20z)÷2y÷(2x)
=(-20×-4)÷(2×5)÷(2×-2)
=(80)÷(10)÷(-4)
=8÷(-4)
=負2
2007-10-01 9:58 pm
1) (-8y) ÷ x ÷ 2z
= (-8)(5)÷-2÷(2)(-4)
=-40÷2÷-8
=-20÷8
=-2.5
2)(-20z)÷2y÷(2x)
=(-20)(-4)÷(2)(5)÷(2)(-2)
=80÷10÷-4
=8÷-4
=-2
2007-10-01 14:00:06 補充：
其實 z=-4?
= (-8)(5)÷-2÷(2)(-4)
=-40÷2÷-8
=-20÷8
=-2.5
2)(-20z)÷2y÷(2x)
=(-20)(-4)÷(2)(5)÷(2)(-2)
=80÷10÷-4
=8÷-4
=-2
2007-10-01 14:00:06 補充：
其實 z=-4?
2007-10-01 9:57 pm
(-8y) ÷ x ÷ 2z
= -40
(-20z)÷2y÷(2x)
= -200
５知岩5岩Ｎeee??"..XD
= -40
(-20z)÷2y÷(2x)
= -200
５知岩5岩Ｎeee??"..XD
2007-10-01 9:55 pm
1
-2
2007-10-01 13:58:44 補充：
錯了錯了 應該係:-2.5-2
-2
2007-10-01 13:58:44 補充：
錯了錯了 應該係:-2.5-2
收錄日期: 2021-04-13 13:41:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071001000051KK02311