Multimea numerelor reale

Multimea numerelor reale

7th Grade

7 Qs

quiz-placeholder

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Multimea numerelor reale

Multimea numerelor reale

Assessment

Quiz

Mathematics

7th Grade

Hard

Created by

Daniela Dîrnu

Used 5+ times

FREE Resource

7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Valoarea lui x pentru care ecustia 5-x=7 are solutie este..?

x=2

x=-1

x=2

2.

MULTIPLE SELECT QUESTION

20 sec • 1 pt

Carei multimi apartine 0,25?

Q\Z

N

Z

3.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Ce este un numara irational?

4.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

Rezolva in multimea numerelor naturale ecuatia : 4x+6=0

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Prin ce metode se poate rezolva un sistem de doua ecuatii liniare cu doua necunoscute?

Metoda substitutiei

Metoda reducerii

Metoda factorului comun

6.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

 Rezultatul calculului 3(127+5) este...?Rezultatul\ calculului\ 3\left(12\sqrt{7}+5\right)\ este...?  



 51751\sqrt{7}  

 367+1536\sqrt{7}+15  

 127+1512\sqrt{7}+15  

 367+536\sqrt{7}+5  

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

 Media ponderata a numerelor a1,a2,...,an Media\ ponderata\ a\ numerelor\ a_1,a_2,...,a_n\   
 cu ponderile p1,p2,...,pncu\ ponderile\ p_1,p_2,...,p_n  (numere pozitive) este ?

 mp=a1+a2+...+app1+p2+...+pnm_p=\frac{a_1+a_2+...+a_p}{p_1+p_2+...+p_n}  

 mp=a1p1+a2p2+...+appnp1×p2×...×pnm_p=\frac{a_1p_1+a_2p_2+...+a_pp_n}{p_1\times p_2\times...\times p_n}  

 mp=a1p1+a2p2+...+appnp1+p2+...+pnm_p=\frac{a_1p_1+a_2p_2+...+a_pp_n}{p_1+p_2+...+p_n}