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MArishka [77]
4 years ago
7

Solve this using elimination

Mathematics
1 answer:
Leya [2.2K]4 years ago
3 0
Multiply the second equation by -1 to make it x+y=4
Now you have to add the together
   -x- 4y=14
+  x+  y=  4
The x's cancel out leaving you with
-3y=18
Divide -3 on both sides
y=-6
Now plug in y to one of the equations
-x-4(-6)=14
-x+24=14
subtract 24 on both sides
-x=-10
Divide by -1 on both sides to make x positive
x=10
(10,-6)
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Place the following steps in order to describe how to solve the following equation:​​ 2(2x+3)-2=52(2x+3)−2=5
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Answer:

frist parentheses then subtract

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which of the ordered pairs is a solution of the given system? y=3x-2 y=-x A.(2,9)B.(1,4)C.(1/2,-1/2)
lesantik [10]

Step-by-step explanation:


7 0
3 years ago
Given the data set (18,14, 12, 14, 11, 11, 19, 20, 16, 11), which statements are correct?
Anuta_ua [19.1K]

The correct statement is that the <u>range of the data is 9</u>

<h3>Range of a data</h3>

The formula for calculating the range of data is expressed as:

Range = Highest value - Lowest value

From the given data

  • Highest value = 20
  • Lowest value = 11

Substituting into the formula

Range = 20 - 11

Range = 9

Hence the correct statement is that the <u>range of the data is 9</u>

Learn more on range here: brainly.com/question/2264373

6 0
3 years ago
Explain how to find the inequality that represents the graph.
Aloiza [94]

The inequality that represents the given graph is y < x/5 -2 OR 5y < x - 10

<h3>Graph of Inequality</h3>

From the question, we are to determine the inequality that represents the graph

First, we will assume the inequality is a straight line and we will determine the equation of the line

From the graph, we have two points on the line

(0, -2) and (5, -1)

Using the formula for the equation of a line with two given point

(y - y₁)/(x -x₁) = (y₂ - y₁)/ (x₂ - x₁)

x₁ = 0

y₁ = -2

x₂ = 5

y₂ = -1

Thus,

(y - -2)/(x - 0) = (-1 - -2)/ (5 - 0)

(y +2)/(x - 0) = (-1 + 2)/ (5 - 0)

(y +2)/(x ) = 1/ 5

5(y + 2) =1(x)

5y + 10 = x

5y = x - 10

y = 1/5(x) - 2

y = x/5 - 2

Now,

Since the solution is below the line and the line is dotted

The inequality becomes

y < x/5 -2

OR

5y < x - 10

Hence, the inequality that represents the given graph is y < x/5 -2 OR 5y < x - 10

Learn more on Graph of Inequality here: brainly.com/question/17106134

#SPJ1

5 0
2 years ago
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