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4 years ago

5 CR

Mathematics

1 answer:

algol134 years ago

6 0

Answer:

3x - y = 1

Step-by-step explanation:

The system:

$\left \{ {{y = 3x -1} \atop {y = 3x + 2}} \right.$

There is no solution to this system of equations.

The system:

$\left \{ {{y = 3x -1} \atop {3x - y = 2}} \right.$

$\left \{ {{y = 3x -1} \atop { y = 3x-2}} \right.$

The is one solution to this system.

The system:

$\left \{ {{y = 3x -1} \atop {3x - y = 1}} \right.$

$\left \{ {{y = 3x -1} \atop { y = 3x-1}} \right.$

There are infinity solutions to the system.

The system:

$\left \{ {{y = 3x -1} \atop {3x + y = 1} \right.$

$\left \{ {{y = 3x -1} \atop { y = 1-3x}} \right.$

The is one solution to this system.

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Solve the following equation 1) 2c + c + 12 = 78

Annette [7]

Step-by-step explanation:

(2c+c) + 12 =78

3c + 12 = 78

78 - 12 = 66

66 ÷ 3 = 22

22 + 22 + 22 + 12 = 78

{ C = 22 }

4 0

4 years ago

Line BC is represented by 3x + 2y = 8. Line AD is represented by –3x – 2y = 6. What is the relationship of line BC to line AD? E

igomit [66]

Sample Response: Line BC is parallel to line AD. The system of equations has the sum 0 = 14. Since this is a false equation, the system has no solution, which means the lines will never intersect.

3 0

3 years ago

Read 2 more answers

A shipment To a warehouse consists of 4500 MP3 players the manager chooses a random sample of 50 MP3 players and finds that 7 ar

riadik2000 [5.3K]

Answer:

630 MP3 players are likely to be defective.

Step-by-step explanation:

Given:

A shipment to a warehouse consists of 4500 MP3 players the manager chooses a random sample of 50 MP3 players and finds that 7 are defective.

Now, to find the MP3 players which are likely to be defective.

Let the defective MP3 players be $x.$

Total MP3 players = 4500.

In sample of 50 MP3 players 7 are defective.

Now, setting the proportion:

If, 50 is equivalent to 7.

Then, 4500 is equivalent to $x.$

Now, to solve using cross multiplication method:

$\frac{50}{7} =\frac{4500}{x}$

By cross multiplying we get:

$50x=31500$

Dividing both sides by 50 we get:

$x=630.$

Therefore, 630 MP3 players are likely to be defective.

5 0

3 years ago

Which of the following are solutions to the equation below?

Luden [163]

Answer:

c) -4/5

d) 4/5

Step-by-step explanation:

The given equation is 25x^2 -16 = 0

Adding 16 on both sides, we get

25x^2 = 16

Dividing both sides by 25, we get

x^2 = 16/25

Taking square root on both sides, we get

x = √(16/25)

x = ±4/5

Therefore, x = 4/5 and x = -4/5

Answers: C) and D)

Hope this will helpful to understand the concept.

Thank you.

4 0

3 years ago

- 18°

Trava [24]

Answer:

use mathwsy

Step-by-step explanation:

6 0

3 years ago