Which of the following is a prime number?
A.35
B.49
C.53
D.87
Simplify the following algebraic expression.(要過程)
A. 3r + 4s - 2r+7s
b. a+2b+3c+4a-6b-2c
C. 2xy+3x-2y+4x-6y+5xy
math HELP!!
2008-08-14 11:55 pm
回答 (3)
2008-08-15 12:22 am
✔ 最佳答案
Which of the following is a prime number?A.35 =7*5
B.49 =7*7
C.53
D.87 =29*3
Answer : C
Simplify the following algebraic expression.(要過程)
A. 3r + 4s - 2r+7s
=3r-2r+4s+7s
=r+11s
b. a+2b+3c+4a-6b-2c
=a+4a+2b-6b+3c-2c
=5a-4b+c
C. 2xy+3x-2y+4x-6y+5xy
=2xy+5xy+3x+4x-2y-6y
=7xy+7x-8y
2008-08-17 12:07 am
吾系啊嘛 -.-
但系個d我未教個啵;;
但系我又吾會去補習,,,,
但系個d我未教個啵;;
但系我又吾會去補習,,,,
2008-08-14 11:56 pm
求做作業會俾人話違規嫁!
小心d牙!
你都係自己做啦!
或者你問補習老師仲好啦!
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我都係咁問,不過我琴日岩岩問就俾人話我求做作業,違規!
仲扣左我好多分!
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小心d牙!
你都係自己做啦!
或者你問補習老師仲好啦!
問補習老師就唔會俾人話違規!
我都係咁問,不過我琴日岩岩問就俾人話我求做作業,違規!
仲扣左我好多分!
(我係要唱衰yahoo,yahoo你中意洛,你咪del晒我回d野囉!不過我會係第2度再唱你咁姐~)
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