Intervale și inecuații

Intervale și inecuații

8th - 9th Grade

12 Qs

quiz-placeholder

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Intervale și inecuații

Intervale și inecuații

Assessment

Quiz

Mathematics

8th - 9th Grade

Hard

Created by

Irina Stratan

Used 4+ times

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12 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Cel mai mic număr întreg din intervalul [  33, 2-3\sqrt{3},\ 2  ] este...

 33-3\sqrt{3}  

 3-3  

 4-4  

 5-5  

2.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Suma numerelor întregi din intervalul (-2, 3] este ...

33

55

11

00

3.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

 [6, 5)(2, 8) = ...\left[-6,\ 5\right)\cup\left(-2,\ 8\right)\ =\ ...  

 (5, 8)\left(5,\ 8\right)  

 [6, 2)\left[-6,\ -2\right)  

 (2, 5)\left(-2,\ 5\right)  

 [6, 8)\left[-6,\ 8\right)  

4.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Intersecția intervalelor (2, 7] și [-1, 4] este ...

[-1, 2)

(2, 4]

[-1, 4]

(2, 7]

5.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

Soluțiile naturale ale ecuației  2x<262x<\sqrt{26}  sunt ...

 {0, 1}\left\{0,\ 1\right\}  

 {0, 1, 2, 3}\left\{0,\ 1,\ 2,\ 3\right\}  

 {1, 2}\left\{1,\ 2\right\}  

 {0, 1, 2}\left\{0,\ 1,\ 2\right\}  

6.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Mulțimea soluțiilor reale ale inecuației 


 6x 4(3x+5)46x\ -4\left(3x+5\right)\le4  este ...

 [4, )\left[-4,\ \infty\right)  

 (, 4]\left(-\infty,\ -4\right]  

 (0, )\left(0,\ \infty\right)  

 (, 6)\left(-\infty,\ -6\right)  

7.

MULTIPLE SELECT QUESTION

3 mins • 1 pt

 2x53\left|2x-5\right|\le3  

Mulțimea soluțiilor reale ale inecuației de mai sus este ...

 (1, 2)\left(1,\ 2\right)  

 [2, 4]\left[-2,\ 4\right]  

 [1, 4]\left[1,\ 4\right]  

 [2, 5]\left[2,\ 5\right]  

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