
TEST SCIENTIFICI DEL 21 MARZO
Authored by MARCO GIAMPETRUZZI
Mathematics
University

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23 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Risolvere la seguente disequazione irrazionale:
√(x2+ 2x + 2) ≤ 2/5– 3/5x
A) –23/8 ≤ x ≤ –1
B) x ≤ –23/8
C)x ≤ 1/3
D) x ≥ –1/3
E) x ≥ –23/8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Domenica sera Cecilia ha letto un quarto delle pagine di un libro. Lunedì sera ne ha lette due quinti e martedì un sesto. mercoledì ha letto le ultime 55 pagine. Quante pagine ha il libro?
A) 360
B) 330
C) 300
D) 3.300
E) 630
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Il numero √(40.000)3 equivale a:
A) 40.000
A) 8 · 106
C) 6,4 · 109
D) 8 · 103
E) 2003/2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Risolvendo il sistema di equazioni mostrato in figura, quale valore numerico si assegna all’incognita b?
A) 4
B) 6
C) 8
D) 10
E) 9
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quanti numeri di tre cifre si possono formare con 2, 3, 4, 5, 6?
A) 20
B) 250
C) 375
D) 125
E) 120
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dati i punti A (–1; –1), B (1; 3) e C (3; k), calcolare il valore di k tale che i tre punti risultino allineati.
A) 6
B) 5
C) -7
D) 4
E) 7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale delle seguenti parabole ha per asse la retta di equazione 2x = –3?
A) y = –x2+ 5x + 4
B) y = –x2– 3x + 4
C) y = –x2– 4x – 4
D) y = –x2+ 5x – 4
E) y = –x2+ 6
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