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Ivenika [448]
2 years ago
10

Solve the system of equations by elimination 3x+4y=31 2x-4y=-6

Mathematics
2 answers:
ANEK [815]2 years ago
5 0
3x + 4y = 31
2x - 4y = -6

*The +4 and -4 in the center of the equation cancel out because 4-4 = 0*

3x = 31
2x = -6
------------

*add like terms*

3x + 2x = 5x

31 - 6 = 25

So now you should have this written on your paper ... > 5x = 25

*Divide by 5 on each side*

5x = 25
_      _
5      5

x = 5
Kobotan [32]2 years ago
5 0

Answer:

x = 5 and y = 4

Step-by-step explanation:

In elimination method we solve a system of two variable equations by eliminating one variable by operating the equations.

Given system of equations,

3x + 4y = 31  ------(1)

2x - 4y = -6 --------(2),

Equation (1) + equation (2),

3x + 2x = 31 - 6

5x = 25

x = 5

From equation (1),

3(5) + 4y = 31

15 + 4y = 31

4y = 16

y = 4

Hence, the solution of the given equations is, x = 5, y = 4

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Answer:

12

Step-by-step explanation

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then i multiplied to 4 x 3 to get the missing side length which equals 12

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Step-by-step explanation:

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18<br> What is the value of y?<br> 10<br> 2y + 4<br> 10 + 2x<br> 5
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5 0
3 years ago
A) Find the lowest common multiple (LCM) of 36 and 48
dezoksy [38]
144 is the lowest hoped this helped
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Find X and QT. The shape is a Rhombus
kompoz [17]

Answer:

See below ~

Step-by-step explanation:

Sides of a rhombus are equal.

⇒ QT = TS

⇒ x² - 4x - 10 = 6x + 14

⇒ x² - 10x - 24 = 0

⇒ x² + 2x - 12x - 24 = 0

⇒ x (x + 2) - 12 (x + 2) = 0

⇒ (x + 2)(x - 12) = 0

⇒ x = -2 or x = 12

Substitute both values and see which gives a positive value for QT :

<u>When x = -2</u> :

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<u>When x = 12</u> :

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The 2 possible answers are :

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8 0
1 year ago
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