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Juliette [100K]
3 years ago
8

3x-4y=1 and x=2y+1 using substitution

Mathematics
1 answer:
Aleksandr [31]3 years ago
3 0

Answer:

x =-1

y =-1

Step-by-step explanation:

to solve this system of equation, using substiution method

3x-4y=1 ........................ equation 1

x=2y+1 ............................  equation 2

subbstitute for x into equation 1

3x-4y=1 ........................ equation 1

3(2y + 1) - 4y = 1

6y + 3 -4y = 1

2y + 3 = 1

collect the like terms

2y = 1- 3

2y= -2

divide both sides by  the coefficient of y which is y

2y/2 = -2/2

y = -1

put the value of y =-1 into equation 2

x=2y+1 ............................  equation 2

x = 2(-1) + 1

x = -2 + 1

x = -1

therefore x =-1 y = -1

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Please find the answer and show your work so I can learn thanks!!
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Answer:

22.34 {km}^{2}

Step-by-step explanation:

The area of a circle:

A = πr^{2}

The problem gives the diameter of a circle, which is equal to 2*r.

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Plugging this into the area equation,

A = π*{{8/3}}^{2}

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8 0
3 years ago
26 out of the 65 magazines at the bookstore are women's magazines. What percentage of the magazines at the bookstore are women's
egoroff_w [7]

The fraction \frac{26}{64} represents the number of women's magazines out of all the other magazines at the book store.

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IMAGE PROVIDED.

7 0
3 years ago
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VikaD [51]

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3 years ago
What does X equal? geometry
Otrada [13]

Answer:

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Step-by-step explanation:

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Let's use this info to find the degree at the top.

58+58= 116

There are 180 degrees in a triangle, so subtract 116 degrees we have so far to find the last angle.

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180-26= 154 degrees.

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3 years ago
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ASHA 777 [7]

Answer:

the answer is a octagon that has rotation of 45degrees

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3 years ago
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