相關(guān)習(xí)題
 0  191185  191193  191199  191203  191209  191211  191215  191221  191223  191229  191235  191239  191241  191245  191251  191253  191259  191263  191265  191269  191271  191275  191277  191279  191280  191281  191283  191284  191285  191287  191289  191293  191295  191299  191301  191305  191311  191313  191319  191323  191325  191329  191335  191341  191343  191349  191353  191355  191361  191365  191371  191379  366461 

科目: 來源:數(shù)學(xué)教研室 題型:013

以下各方程組中,以為解的是····························································· ( 。

A.   B.   C.   D.

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

下列方程變形正確的是···················································································  

   A,得  B,得

   C.,得x=-2          D.,得

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

如果x=0是關(guān)于x的方程的根,則m的值是·································  

   A.      B.     C.2     D.-2

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

解方程,下面幾種解法中較簡捷的是·········································  

   A.方程兩邊同乘以5,得   B.去括號,得

C.方程兩邊同乘以,得    D.括號內(nèi)先通分,得

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

方程的解是·················································································  

   A2    B   C    D-2

 

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

下列各式中,是方程的是················································································  

A.    B.3+2=5      C.x=0    D.3x-12

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

我國股市交易中每買、賣一次需交千分之七點五的各種費(fèi)用,某投資者以每股

10元的價格買入上海某股票1000股,當(dāng)該股票漲到12元時全部賣出,該投資者實際贏得為     ( 。

A.2000元  B.1925元    C.1835元   D.1910元

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

某商店有兩種進(jìn)價不同的計算器都賣64元,其中一種贏利60%,另一種虧本20%,若甲乙兩位同學(xué)各買一種計算器一個,在這次賣賣活動中,這家商店·································································· ( 。

A.不賠不賺   B.賺了8元   C.賠了8元   D.賺了32元

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

下列各題方程的解法中,正確的是

A.解方程:       B.解方程:

解:去分母,得               解:去括號,得

             

移項、合并同類項,得             x=1

C.解方程:     D.解方程:

解:原方程就是              解:去分母,得

            

                         

 

查看答案和解析>>

科目: 來源:數(shù)學(xué)教研室 題型:013

下列方程變形中,移項正確的是············································································ (  )

 

A.從,得       B.從,得

C.從,得  D.從,得

 

查看答案和解析>>

同步練習(xí)冊答案