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docker41 [41]
2 years ago
13

Solve the system by substitution.

Mathematics
2 answers:
mezya [45]2 years ago
8 0

Answer:

(2, 6)

Step-by-step explanation:

if you meant for both of the y to be the same then this should be right

Roman55 [17]2 years ago
8 0

Answer:

(2,6)

Step-by-step explanation:

*this is actually elimination*

1st- Turn both of them into standard form.

y=9x-12 ---> 9x-y=12

y=3x -->  3x-y=0

--

Multiply 9x-y=12 by -1

-9x+y=-12

3x-y=0

-6x=-12

divide by 6

x=2

--

Plug 2 into the first equation

9(2)-y=12

18-y=12

Cancel out 18 by subtracting -18 to both sides

-y=-6

divide by -1

y= 6

Answer: (2,6)

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GarryVolchara [31]

Answer:

\displaystyle{f(x+1)=|x-6|-4}

Step-by-step explanation:

To evaluate \displaystyle{f(x+1)}, substitute \displaystyle{x} to \displaystyle{x+1} so we should have:

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Simplify. (-7y^2+4y+9)+(6y^2-5y+9)-(2y^2-9y-2)
Natali5045456 [20]

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7 0
2 years ago
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lys-0071 [83]

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Step-by-step explanation:

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In making a keychain,Sara uses a pattern of beads 3 times. After the key chain is complete, what fraction of the beads in the ke
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4 0
3 years ago
What is the volume of this rectangular prism?
Fynjy0 [20]

Answer: V≈5.21 cm³

Step-by-step explanation:

To find the volume of a rectangular prism, you multiply the length, width and height.

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Since we were given the length, width and height, we can directly multiply them together.

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