馬虎與粗心兩位同學(xué)解方程組時(shí),馬虎看錯(cuò)了m解方程組得;粗心看錯(cuò)了n解方程組得;

試求:(1)常數(shù)m、n的值;(2)原方程組的解.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:初中數(shù)學(xué) 來(lái)源: 題型:


已知:等邊△ABC

(1)如圖1,P為等邊△ABC外一點(diǎn),且∠BPC=120°.試猜想線段BP、PC、AP之間的數(shù)量關(guān)系,并證明你的猜想;
(2)如圖2,P為等邊△ABC內(nèi)一點(diǎn),且∠APD=120°.求證:PA+PD+PC>BD.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 


查看答案和解析>>

科目:初中數(shù)學(xué) 來(lái)源: 題型:


計(jì)算:

查看答案和解析>>

科目:初中數(shù)學(xué) 來(lái)源: 題型:


如果方程組的解是的一個(gè)解,則m的值為(  )。

   A  1     B  2     C  3    D  4

查看答案和解析>>

科目:初中數(shù)學(xué) 來(lái)源: 題型:


今年三八婦女節(jié)這天原陽(yáng)縣各大小商家紛紛采取促銷活動(dòng),某服裝店老板將一款單件進(jìn)價(jià)為200元的衣服先提價(jià)200%;再打5折出銷,則出銷這款衣服每件所獲利潤(rùn)是  ___元。

查看答案和解析>>

科目:初中數(shù)學(xué) 來(lái)源: 題型:


不等式組的正整數(shù)解有( 。﹤(gè).

A.4    B. 3         C. 2         D.1

查看答案和解析>>

科目:初中數(shù)學(xué) 來(lái)源: 題型:


在等腰直角三角形ABC中,,斜邊AB上的中線與一腰的垂直平分線相交于點(diǎn)E,則點(diǎn)E到三角形三個(gè)頂點(diǎn)的距離是   ___________      .

查看答案和解析>>

科目:初中數(shù)學(xué) 來(lái)源: 題型:


三角形中,若一個(gè)角等于其他兩個(gè)角的差,則這個(gè)三角形是    (    )

A.鈍角三角形    B.直角三角形    C.銳角三角形    D.等腰三角形

查看答案和解析>>

科目:初中數(shù)學(xué) 來(lái)源: 題型:


x+-(-y)

查看答案和解析>>

同步練習(xí)冊(cè)答案