Qual è l'intervallo risolutivo per la seguente disequazione: x2-4x-5>0 ?
disequazioni secondo grado e retta classe 4OB

Quiz
•
Mathematics
•
3rd Grade
•
Medium
Giuliana Colombo
Used 9+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
x<-1 V x>5
x<-5 V x>1
-1<x<5
-5<x<1
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
- 10x2 + 5x < 0
0<x<1/2
x<1/2
x<0 V x>1/2
-1/2<x<0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Risolvere il seguente sistema di disequazioni di II grado, esprimendo l’insieme soluzione con gli intervalli di R:
non ammette soluzioni
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Risolvere la seguente disequazione fratta, esprimendo l’insieme soluzione con gli intervalli di R:
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. le seguenti rette y=½x+5 y=½x-1 sono tra di loro
perpendicolari
parallele
sghembe
si incontrano in un punto
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se 1/3 è il coefficiente angolare di una retta r, quanto vale il coefficiente angolare di una retta perpendicolare a r?
1
-3
2
3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nell'equazione y = mx + q, m rappresenta:
Un numero qualsiasi
La pendenza
coefficiente angolare
L'ordinata all'origine, cioè il punto in cui la retta interseca l'asse y
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