Testul nr 17 PROPORȚII

30 bonus points

0 successes

English

Pregătirea Evaluării Naționale 2020- MATEMATICĂ- Lecția 9

The Crazy Squirrel invented a huge vacuum cleaner for the kids brains that are not so mentally strong. It vacuums all the learnings. Can you resist?

If you want to save your points and appear in the Kidibot charts, you must be logged in. Create here an acount or login.

Question 1 of 10

1. Question
1 points
$\frac{2 x - 4}{14} = \frac{5}{7}$ . Atunci x este egal cu
- 7
- 2
- 4
- 5
Correct

Incorrect
Question 2 of 10

2. Question
1 points
Câte numere de forma $a b$ există, știind că $\frac{2}{a} = \frac{3}{b}$ ?
- Nu există
- 4
- 2
- O infinitate
Correct

Incorrect
Question 3 of 10

3. Question
1 points
$\frac{a}{3 b} = \frac{5}{9}$ . Atunci $\frac{3 a}{b}$ este egal cu
- $\frac{5}{3}$
- 5
- $\frac{9}{5}$
- 15
Correct

Incorrect
Question 4 of 10

4. Question
1 points
$\frac{a}{b} = \frac{1}{2}, \frac{b}{c} = \frac{2}{3}$ . Atunci $\frac{a}{c}$ are valoarea
- 0,(3)
- $\frac{3}{5}$
- 1
- Nu se poate calcula
Correct

Incorrect
Question 5 of 10

5. Question
1 points
$\frac{x}{2} = \frac{2}{y}$ . Calculați $\frac{x y}{2}$
- Alt răspuns
- 4
- 8
- 2
Correct

Incorrect
Question 6 of 10

6. Question
1 points
$\frac{3 a}{b} = \frac{b}{3}$ . Atunci $2 b^{2} - 18 a + 16$ este egal cu
- 32
- Nu se poate calcula
- 0
- 16
Correct

Incorrect
Question 7 of 10

7. Question
1 points
$\frac{x}{y} = \frac{4}{5}$ . Atunci 10x-8y+5 are valoarea
- 7
- 5
- 8
- 10
Correct

Incorrect
Question 8 of 10

8. Question
1 points
Dacă $\frac{x - 10}{15} = \frac{3}{5}$ . Atunci 2x-5 are valoarea
- 19
- 33
- 25
- 14
Correct

Incorrect
Question 9 of 10

9. Question
1 points
Aflați numărul de forma $a b$ știind că $\frac{a - b}{a + b} = 0, 1 (6)$
- 57
- 12
- 75
- Nu există
Correct

Incorrect
Question 10 of 10

10. Question
1 points
$\frac{2 a}{5 b} = \frac{5 b}{2 a}$ . Atunci $\frac{a^{4}}{b^{4}}$ este egal cu
- $\frac{25}{4}$
- $\frac{625}{16}$
- $\frac{5}{2}$
- $\frac{2}{5}$
Correct

Incorrect

Examples of questions from "Testul nr 17 PROPORȚII"

$\frac{a}{b} = \frac{1}{2}, \frac{b}{c} = \frac{2}{3}$ . Atunci $\frac{a}{c}$ are valoarea
$\frac{2 a}{5 b} = \frac{5 b}{2 a}$ . Atunci $\frac{a^{4}}{b^{4}}$ este egal cu
$\frac{3 a}{b} = \frac{b}{3}$ . Atunci $2 b^{2} - 18 a + 16$ este egal cu