
南一國中數學1下ch4-2
Authored by 數學 南一
Mathematics
7th Grade
Used 5+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列各選項中,哪一個數不是不等式8 ( x+3 )-2 ( 3x-6 )>4 ( x+1 )的解?
16
14
12
10
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小明買了5元及10元的郵票若干張,且總價錢不超過40元。若此兩種郵票都有買,則共有幾種買法?
9
10
11
12
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知a、b、c三數,其中c<0,則下列何者錯誤?
若a>b,則a-c>b-c
若a>b,則-3ac<-3bc
若a>b,則ac2>bc2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
不等式-1.4 ( 5-x )≤0.8-( x+3 )的正整數解共有多少個?
5
4
3
2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如果a與b都是0.2x-1>0的解,則下列何者錯誤?
a+b>10
a+b<10
2a+b>15
a+2b>15
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
亨亨三次段考的數學成績分別為77分、82分、x分,且三次的平均分數不小於78分,則下列哪一個數不可能是x的值?
91
82.5
75
70
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
南一眼鏡行週年慶,推出限量100支鏡框全面依定價x元再打五折的優惠方案。已知鏡框1支的成本是300元,而且賣出至少70支時,才可回收100支鏡框的成本,則鏡框的定價可為下列何者?
830元
840元
850元
860元
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