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masya89 [10]
3 years ago
14

I need to know how to do the systems of equation

Mathematics
1 answer:
belka [17]3 years ago
4 0
Answer: x = 3
              y = -1

There are many ways to do the systems of equations. To solve this, I used the substitution method.

Isolate y or x (whichever is easier) in the first equation IF NECESSARY.
y = x - 4 --> it's already given

Substitute in (x - 4) for y in the second equation.
2x + (x - 4) = 5                 Distributive Property
2x + x - 4 = 5                   Combine like terms
3x - 4 = 5                         Add 4 to both sides
3x = 9                              Divide by 3 to both sides
x = 3                                Answer!

Substitute in (3) for x in the first equation.
y = (3) - 4                        Simplify
y = -1                               Answer!
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<span><u><em>The correct answers are: </em></u>
1) A;
2) A;
4) D 
3 cannot be done because the graph is not shown.

<u><em>Explanation:</em></u><span><u><em> </em></u>
1) Shifting a graph to the left, we would normally think of subtracting 1 from the function. However, horizontal translations are the opposite; left means adding 1 to x, while right means subtracting 1 from x.

2) A reflection in the x-axis means the y-coordinate will be negated (the opposite sign). This means that g(x)=-f(x)=-(x^2+5=-x^2-5.

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3 0
3 years ago
Read 2 more answers
Two students compared the scores on their math tests. Their results on 9 tests are shown in the box plots below.
Pani-rosa [81]

The statements which are true regarding the students whose results on 9 tests are as shown are; The median of Nadia's data is equal to the median of Ben's data.

Nadia had the highest score on a test.

<h3>Which statements are true regarding the scores on the tests?</h3>

According to the task content, it follows that the results of the students in discuss are indicated by means of a box plot as in the attached image.

Consequently, it follows from observation that the median of Nadia and Ben as indicated in the attached box plot is 92 in both cases as indicated by the vertical line in both boxes.

Additionally, the highest score by Nadia is 100 while that for Ben is; 99.

Hence, Nadia had the highest score on a test.

Read more on median in box plots;

brainly.com/question/14277132

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4 0
2 years ago
I'm very confused on how to even figure out the question and what I'm supposed to do
Tasya [4]

Answer:

To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect. The two lines intersect in (-3, -4) which is the solution to this system of equations. I hope this helped!

5 0
3 years ago
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Leto [7]

Answer:

X4

Step-by-step explanation:

3 0
3 years ago
Use the probability model listing all 6 possible outcomes
kakasveta [241]

Answer:

C) 1/3

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But you only have a 2/6 chance of landing on 5 or greater.

2/6 is also equal to 1/3

7 0
3 years ago
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