Mathematics High School

A system of equations is shown below.
y = 2x - 3
y = 5x + 6
What is the value of x + y?
A. -12
B. -9
C. 9
D. 12
Please help me!!!!

A System Of Equations Is Shown Below.y = 2x - 3y = 5x + 6What Is The Value Of X + Y?A. -12B. -9C. 9D.

Answers

Answer 1

Answer:

-12

Step-by-step explanation:

Step1: Add 3 to both sides of the equation

2x -3 = 5x +6

    +3         +3 = 9

Step2: subtract 5x from both sides of the equation

2x = 5x +9

-5    -5

Step3: divide both sides of the equation by the same term

-3x(/ -3) = 9(/-3)    

X=-3

Step4: multiply -3 with 2

-3x2= -6

Step4: subtract -6 with 3

-6 - 3= -9

Y=-9

Step5: add the -9 to -3

-9 + -3 = -12

ANSWER: -12

Related Questions

What is the product of 3 x 5? Is the answer positive or negative?

Answers

Answer:

The product is 15. The answer is positive.

Step-by-step explanation:

The product of two numbers is the two numbers multiplied together. When two positive numbers are multiplied, the answer would be positive.

3 × 5 = 15

Given g(x)=30-6x, find g(-4)=____?

Answers

Answer:

g(-4)=54

Step-by-step explanation:

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Answers

Depending on how big the center is, I would say 15.
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Answers

the answer would be 55%
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Answers

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Step-by-step explanation:

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Answers

Answer:

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Answers

Answer: Laundry = $2

Dishes= $1

Step-by-step explanation:

Let the amount paid for doing laundry be x

Let the amount paid for doing dishes be y.

Based on the information in the question, this can be formed in an equation as:

5x + 8y = 18 ..... i

4x + 6y = 14 ...... ii

Multiply equation i by 4

Multiply equation ii by 5

20x + 32y = 72 ...... iii

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Subtract iv from iii

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y = 2/2 = 1

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Answers

Answer:

D

Step-by-step explanation:

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Answers

Answer:

Step-by-step explanation:

12/4 = 3

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6
In Rectangle MNOP, MN=7, NO = 3. OP=7, and MP=3
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Answers

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Step-by-step explanation:

Apartment buildings are required to have a fire extinguisher (extintor de incendios) every 600 feet. If a building has a total of 13,500 feet, how many fire extinguishers are needed?

Answers

Given:

Apartment buildings are required to have a fire extinguisher every 600 feet.

Height of building = 13,500 feet

To find:

The number of fire extinguishers are needed.

Solution:

Building needs a fire extinguisher every 600 feet.

Height of building = 13,500 feet

So, required number of fire extinguishers is

[tex]n=\dfrac{\text{Total height of building}}{600}[/tex]

[tex]n=\dfrac{13500}{600}[/tex]

[tex]n=\dfrac{135}{6}[/tex]

[tex]n=22.5[/tex]

Number of fire extinguishers cannot be negative.

[tex]n\approx 23[/tex]

Therefore, 23 number of fire extinguishers are needed.

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Answers

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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Step-by-step explanation:

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IZ
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Answers

Answer:

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Answers

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Step-by-step explanation:

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Answers

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Step-by-step explanation:

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Answers

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Step-by-step explanation:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Plzzzzz give me Brainliest!!!!!  

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