ENVIII-Matematică-2020-Simulare 2018- Subiectul I
Quiz
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Other, Other
•
8th Grade
•
Medium

Boldea Daniela
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6 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Rezultatul calculului 18 - 6 : (1+2) este egal cu....
4
16
2.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Numerele reale a şi b sunt nenule şi .
Numărul 4a-b este egal cu....
b = 4a ⇒ 4a-b = b - b = 0
a =4b ⇒ 4a-b = 16b-b = 15b.
3.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Scrisă sub formă de interval, mulţimea A = {x∊R | 2x-1≥3 } este egală cu...
x ≥ 2 ⇒ A = [ 2, + ∞)
x ≥ 2 ⇒ A = ( - ∞, 2]
4.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Perimetrul unui romb este egal cu 24 cm. Dacă unul dintre unghiurile rombului are măsura de 30°, atunci aria acestui romb este egală cu....
⇒ l = 6 cm
⇒
⇒ l = 6 cm
5.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
În figura alăturată este reprezentat un cub ABCDA'B'C'D'. Măsura unghiului determinat de dreptele AB' şi CC' este egală cu....°.
m∢ (AB' , CC') = m∢ (AB' , AA')= 90°
m∢ (AB' , CC') = m∢ (AB' , BB')= 45°
6.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
În diagrama alăturată este prezentată situaţia statistică a notelor obţinute de elevii unei clase a VIII-a la teza de matematică pe semestrul I . Conform diagramei, media notelor obţinute de elevii clasei a VIII -a la teza de matematică pe semestrul I este egală cu....
M.a.= (4·1 + 5·3 + 6·4 + 7·11 + 8·7 + 9·3 + 10·1) : (1+3+4+11+7+3+1) = 7,1
M.a.= (4·1 + 5·3 + 6·4 + 7·11 + 8·7 + 9·3 + 10·1) : (1+3+4+11+7+3+1) = 7,3
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