Find the solution of the system of equations . - 5x + 9y = 11 x - 3y = - 7how do i solve this

Answers

Answer 1
Answer:

Answer:

Solution: x=5, y=4

Step-by-step explanation:

System of Equations

We need to solve:

- 5x + 9y = 11

x - 3y = - 7

There are several ways to solve a system of linear equations. We'll take advantage of the second equation since it has the x with coefficient 1 and solve it for x:

x = - 7 + 3y

Now replace it into the first equation:

- 5(- 7 + 3y) + 9y = 11

Operate:

35 - 15y + 9y = 11

Simplify:

35 - 6y = 11

Rearrange:

- 6y = 11 - 35 = -24

Solve:

y = -24 / -6

y = 4

Finally, since

x = - 7 + 3y

x = - 7 + 3*4

x = - 7 + 12

x = 5

Solution: x=5, y=4


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C. Cone
D. Polygon

Answers

A polyhedron is three dimensional solid that only has flat faces. It contains vertices and straight edges. From the choices, the solids that would be considered as polyhedron are prism and pyramid. A cone cannot be considered as such since it containsa round surface. A polygon is a two dimensional shape thus it does not satisfy the condition of a polyhedron.

The Prism and Pyramid is a typical example of polyhedron. That is optionA and B.

The polyhedron

A polyhedron is any solid that has a three dimensional shape with all its sides flat. It is made up of different polygons that join together.

These polyhedron are made up of three parts:

  • The face: They are the flat surfaces

  • The edge: The region where two flat surfaces meet

  • The vertex: The point of intersection of the edges of the polyhedron.

Examples of polyhedron are the Prism and Pyramid. The prisms have flat faces and is made up of rectangles while the pyramids is made up of triangles and different polygons.

Therefore, the Prism and Pyramid is a typical example of polyhedron.

Learn more about polyhedron here:

brainly.com/question/24324783

The LCD for 4/8 and 5/12 is _____.

Answers

Answer:

22/24

Step-by-step explanation:

Below is a table showing the investment and the investment period of ​

Answers

Answer:

hey. pls complete your question.

Which of the following correctly describes the graph of this function?

Answers

Answer: The graph of the function is symmetric about the y-axis.

Explanation:

Symmetric about the y-axis means that the graph can be reflected over, in this case the y-axis, without altering it. Your function is able to do this! I’ve attached a picture of the function so that you can visualize what I wrote.

Select all that justify the following statement.2•1/2=1
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inverse - addition
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Answers

Answer:

G: Inverse multiplication

Step-by-step explanation:

Statement is 2•1/2=1

Now, what this means is that when we multiply a number by it's inverse form, the result will be 1.

This means that this statement denotes an inverse multiplication.

Thus, the last option is the correct answer

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Answers

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