If two systems of linear equations have the same solution set (in other words, the two systems are equivalent), then they must have the same number of equations. a. True
b. False

Answers

Answer 1

Answer:

Answer:

False.

Step-by-step explanation:

Equivalent systems of equations are those that have the same solutions or roots, although they have different numbers of equations. Equivalent systems of equations must have the same number of unknowns.

In other words, two systems of equations are said to be equivalent when they have the same solutions. Equivalent systems of equations do not have to have the same number of equations, although they do have to have the same number of unknowns.

So, the sentence is false.

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2x+3y=-11, and x=2y+12 solve in substition equations

Answers

The answer would be (2,-5)

Because you know the equation for what x is, you can substitute (2y+12) for x. Your new equation would look like this;

2(2y+12)+3y=-11

Distribute the 2 into 2y+12

4y+24+3y=-11

Add 4y and 3y

7y+24=-11

Subtract 24 from both sides

7y=-35

y=-5

Now, substitute -5 in for y in the 2nd equation.

x= 2(-5)+12
x=-10+12
x=2

x=-5
y=2

Hope this helped! You can reach out to me if you have any more questions!

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Answers

Answer:

d. a reflection across the y-axis

The answer to this it d.

Simplify 8X +7 - 2X -4

Answers

Answer:

6x + 3

Step-by-step explanation:

8x - 2x + 7 -4

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Here is a figure that looks like the letter A, along with several other figures. Which figures are scaled copies of the original A? Explain how you know.Answer here

Answers

The figures that are scaled copies of the original figure A include the following: B. 2 and 4.

What is dilation?

A dilation is a type of transformation that is used for altering the dimensions of a geometric figure, but not its shape.

In Mathematics, the following rules are applied to interpret and understand the dilation of a geometric figure:

A geometric figure is enlarged when the scale factor is greater than 1.
A geometric figure remains the same when the scale factor is equal to 1.
A geometric figure is reduced when the scale factor is less than 1.

In this context, we can logically deduce that the scaled copies of the original figure A are figure 2 and figure 4 because dilation preserves angle measures and the direction that the shape faces.

Read more on dilation here: brainly.com/question/11812796

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Complete Question:

Here is a figure that looks like the letter A, along with several other figures. Which figures are scaled copies of the original A?

2 and 3

2 and 4

1 and 4

1 and 3

Answer:

i think 2 and 4

Step-by-step explanation:

Complete the sentence. 13 is 65% of _____