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Mandarinka [93]
3 years ago
5

Help with substitution show work please!!!!!!!

Mathematics
2 answers:
yaroslaw [1]3 years ago
6 0

Answer: x=4, y=-2

Step-by-step explanation: 4x+y=14, x-2y=8

4x+y-y=14-y

4x/4=14/4-y/4

x=14-y/4-(2y)(4)/4

4(14-9y)/4=(8)(4)

14-9y-14=32-14

-9y/-9=18/-9

y=-2

(14)-(-2)/4

14+2/4

16/4

4

x=4

x=4, y=-2

zalisa [80]3 years ago
4 0

Answer:

Solution of given system of equations is: x=4, y=-2 or (4,-2)

Step-by-step explanation:

Solve the equation using substitution

4x+y=14

x-2y=8

Substitution method involves placing value of x or y from one equation to other equation.

We have

4x+y=14--eq(1)\\x-2y=8--eq(2)\\

Finding value of x from equation 2

x-2y=8

x=2y+8

Put this value of x in equation 1

4x+y=14Put\:x=2y+8\\4(2y+8)+y=14\\8y+32+y=14\\9y=14-32\\9y=-18\\y=\frac{-18}{9}\\y=-2

We get y=-2

Now, put value of y into equation 2 to find value of x

x-2y=8\\x-2(-2)=8\\x+4=8\\x=8-4\\x=4

We get x = 4

So, solution of given system of equations is: x=4, y=-2 or (4,-2)

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svlad2 [7]

Answer:

24) $495

25) 14%

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Step-by-step explanation:

24) 600 - (600 × 0.25) = 450

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4 0
3 years ago
A data set has a median of 12, an upper quartile of 15, a lower quartile of 10, a minimum of 4, and a maximum of 20. Which state
ololo11 [35]

Given:

A data set has a median of 12, an upper quartile of 15, a lower quartile of 10, a minimum of 4, and a maximum of 20.

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