КР Неравенства -  май 2020, 7 клас

КР Неравенства - май 2020, 7 клас

7th Grade

11 Qs

quiz-placeholder

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КР Неравенства -  май 2020, 7 клас

КР Неравенства - май 2020, 7 клас

Assessment

Quiz

Mathematics

7th Grade

Medium

Created by

Юлия Генова

Used 3+ times

FREE Resource

11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

НЕВЯРНО е неравенството:

(15)3 <(13)3\left(-\frac{1}{5}\right)^{3\ \ }<\left(-\frac{1}{3}\right)^3

(1)3 >(2)3\left(-1\right)^{3\ }>\left(-2\right)^3

(13)2>(15)2\left(-\frac{1}{3}\right)^2>\left(\frac{1}{5}\right)^2

(5)2<5-\left(-5\right)^2<-\left|-5\right|

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Числото (− 1)3 е решение на неравенството:

x<2xx<2x

x2xx\ge2x

x<x2x<x-2

3x<x3-x<x

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Неравенството 3x − 3 < 1,5(2x − 1) е еквивалентно на неравенството:

x<0\left|x\right|<0

(x1)20\left(x-1\right)^2\ge0

x+1<xx+1<x

x1>0x-1>0

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Интервалът [−1; ∞) е решение на неравенството:

x(x1)+12x+x2x\left(x-1\right)+1\le2x+x^2

x(x1)12x+x2x\left(x-1\right)-1\ge-2x+x^2

x(x1)+12x+x2x\left(x-1\right)+1\ge-2x+x^2

x(x1)12x+x2x\left(x-1\right)-1\le2x+x^2

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

За a =  2-2   решението на неравенството ax > a е интервалът:

 (0;+)\left(0;+\infty\right)  

 (;1)\left(-\infty;1\right)  

 (1;+)\left(1;+\infty\right)  

 (;0]\left(-\infty;0\right]  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Ако ∆ABC е равнобедрен (AB = AC) и MBC, то вярно е, че:

AM > AB

AM < AB

AMAC

AM > AC

7.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Дължините на две от страните на равнобедрен триъгълник са 2 cm и 4 cm. Намерете периметъра на триъгълника в сантиметри.

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