ecuatii si inecuatii

ecuatii si inecuatii

7th Grade

10 Qs

quiz-placeholder

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ecuatii si inecuatii

ecuatii si inecuatii

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

Created by

Efros Elena

Used 70+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Daca forma generala e ecuatiei de gradul I este ax+b=0ax+b=0  . Si avem ecuatia  x+2=0-x+2=0  , atunci a si sunt egale cu ?

 a=1a=1  si  b=0b=0  

 a=1a=-1  si  b=1b=1  

 a=1a=1  si  b=1b=1  

 a=1a=-1  si  b=2b=2  

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 2x4=02x-4=0  

Aflati solutia ecuatie

1

3

2

5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Numarul 5-5   este solutie a carei ecuatii de mai jos?

 3x+7=223x+7=22  

 3x+7=22-3x+7=22  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Solutia ecuatie 6x+5=4x36x+5=4x-3   este?

 x=5x=-5  

 x=3x=3  

 x=2x=-2  

 x=4x=-4  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Daca dublul unui numar de adunat cu 3, se obtine 9.

Atunci matematic sub forma de ecuatie ar fi:

23+x=92\cdot3+x=9

2x+3=92x+3=9

9x=3+x9x=3+x

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Daca x(;3)x\in\left(-\infty;3\right)  . Atunci sub alta forma poate reprezentat ca:

 x3x\le3  

 x3x\ge3  

 x<3x<3  

 x>3x>3  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Daca 3x5-3\le x\le5 , in alt mod poate fi scris ca: 

 [5;3]\left[5;-3\right]  

 [3;5)\left[-3;5\right)  

 (3;5)\left(-3;5\right)  

 [3;5]\left[-3;5\right]  

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