Use an algebraic expression to represent the answer.
1.What is the square of 3x？
2.The speed of a train is y km/h.It takes 2 hours to travel from town A to B.
Find the distance between the two towns.
我的maths問題............我系中一
2008-10-19 1:33 am
回答 (3)
2008-10-19 1:38 am
1.What is the square of 3x？
=(3x)^2
=9x^2
2.The speed of a train is y km/h.It takes 2 hours to travel from town A to B.
=y km/hX2
=2y km
=(3x)^2
=9x^2
2.The speed of a train is y km/h.It takes 2 hours to travel from town A to B.
=y km/hX2
=2y km
參考: 我
2008-10-19 1:36 am
1.9x square
2.don't know
2.don't know
2008-10-19 1:36 am
1. ANS=9 x^2
2. ANS=2 y
2. ANS=2 y
收錄日期: 2021-04-13 18:18:06
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