
Rovnice a soustavy
Authored by Ludmila Čoupková
Mathematics
9th Grade
Used 5+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Dosaď číslo za ⊙, aby platila rovnost.
3 x 8 + 4 = 24 : ⊙ + 20
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dosaď číslo za ⊙, aby platila rovnost.
9 x (8 - 6) = ⊙ x 5 + 3 - 20
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Čím je potřeba vynásobit uvedenou rovnici, abychom u neznámé x získali číslo 8?
2x - 5y = 6
4
-4
2
-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Máme rovnici:
x - 9y = 27
Jaký tvar bude mít rovnice, když za neznámou y dosadíme číslo 5?
x - 95 = 27
x - 5 = 27
x - 9 . 5 = 27
5 - 9 = 27
5.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Do uvedené rovncie dosaď za neznámou x číslo 6 a vypočítej, jaké hodnotě se rovná neznámá y.
-3x + 5y = 27
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jakou rovnici získáme, když sečteme uvedené rovnice?
-10x + 4y = 15
10x - 2y = -10
4y - 2y = 15 - 10
4y = 15
6y = 15
4y - (-2y) = 15 + 10
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Vyřeš soustavu rovnic:
x + y = 1
2x - 3y = 12
x = 3
y = -2
x = 2
y = -4
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