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南一國中數學1下ch4-2

Authored by 數學 南一

Mathematics

7th Grade

Used 5+ times

南一國中數學1下ch4-2
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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abc三數,其中c<0,則下列何者錯誤

ab,則acbc

ab,則-3ac<-3bc

ab,則ac2bc2

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ab都是0.2x-1>0的解,則下列何者錯誤

ab>10

ab<10

2ab>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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