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Sever21 [200]
3 years ago
15

Can someone help me please

Mathematics
1 answer:
Schach [20]3 years ago
7 0

Answer:

Step-by-step explanation:

The system of equations is expressed as

y=-2x+7 - - - - - - - - 1

y=5x-7 - - - - - - - - -2

We would equate equation 1 and equation 2. It becomes

- 2x + 7 = 5x - 7

We would add 2x to the left hand side and the right hand side of the equation. Also add 7 to the left hand side and the right hand side of the equation. It becomes

- 2x + 2x + 7 + 7 = 5x + 2x - 7 + 7

14 = 7x

Dividing the left hand side and the right hand side of the equation by 7, it becomes

7x/7 = 14/2

x = 2

y= -2 × 2 + 7

y = - 4 + 7

y = 3

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-9=k-6
Shkiper50 [21]

Answer:

k = -3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

-9 = k - 6

<u>Step 2: Solve for </u><em><u>k</u></em>

  1. Add 6 to both sides:                    -3 = k
  2. Rewrite:                                         k = -3
3 0
3 years ago
What is 1 - 27/44 = in its simplest form?
zloy xaker [14]
1 - \frac{27 }{44}=\frac{44}{44}-\frac{27 }{44}=\frac{17 }{44}


8 0
3 years ago
Read 2 more answers
The type of data that contains results from other people that are of similar age and gender is known as
yuradex [85]

The type of data that contains results from other people that are of similar age and gender is known as normative data.

<h3>What is normative data?</h3>

Normative data is a type of data that is observed that contains information about the characteristics of a population of interest. For example, normative data about students in a class would contain information such as age, gender, height.

To learn more about data, please check: brainly.com/question/20841086

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4 0
2 years ago
How can I solve a multi step equation ex. 4x-9=7x+12
harkovskaia [24]
First you bring the x to one side so u subtract 4x from 7x and you get the new equation as -9=3x+12 then you just solve and you get x is equal to -7
4 0
3 years ago
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What is a correct congruence statement for the triangles shown? Enter your answer in the box. ​ △QDJ≅△ ​ A triangle Q D J. The b
almond37 [142]

Answer: The correct congruence statement is \triangle QDJ\cong \triangle MCW.

Explanation:

It is given that A triangle Q D J. The base D J is horizontal and side Q D is vertical. Another triangle M C W is made. The base C W and side M C are neither horizontal nor vertical. Triangle M C W is to the right of triangle Q D J.

The sides Q D and M C are labeled with a single tick mark. The sides D J and C W are labeled with a double tick mark. The sides Q J and M W are labeled with a triple tick mark.

Draw two triangles according to the given information.

From the figure it is noticed that

QD\cong MC

DJ\cong CW

QJ\cong MW

So by SSS rule of congruence we can say that \triangle QDJ\cong \triangle MCW.

4 0
3 years ago
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