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Linearne jednadžbe i nejednadžbe

Authored by Mirela Rastija

Mathematics

9th Grade

Used 13+ times

Linearne jednadžbe i nejednadžbe
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8 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

8x + 3 = 5x - 2. Koliki je x?

x = - 2

x = 2

x = 3

x = -3

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

7(3x - 2) = 28. Koliki je x?

x = - 2

x = 2

x = 21

x = -21

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Opseg pravokutnika je 80m. Njegova je dulja stranica tri puta dulja od kraće. Kolika je površina pravokutnika?

P = 300m2

P = 200m2

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Zbroj dvaju brojeva je 30, razlika njihovih kvadrata je 120. Koji su to brojevi?

10, 15

8, 7

13, 17

13, 15

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Riješi sustav dviju jednadžbi

x + 3y = 8

x + 2y = 14

Rješenja sustava su:

x = 26, y = -6

x=13, y = -3

x = 5, y = 19

x = 15, y = 13

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 x2\frac{x}{2}  + 3 = 72\frac{7}{2}  - 5x
Koliki je x?

x = 7

x =  12\frac{1}{2}  

x =  111\frac{1}{11}  

x = 11

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Riješi nejednadžbu
-3x + 5 < 32\frac{3}{2}  .
Skup rješenja je

< -  \infty  ,  76\frac{7}{6}  >

< 76\frac{7}{6}  , + \infty  >

[ 76\frac{7}{6}  , + \infty  ]

< - \infty  ,  76\frac{7}{6}  ]

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