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Ostrovityanka [42]
3 years ago
11

I need some help solving this. ​

Mathematics
2 answers:
Lelechka [254]3 years ago
6 0

Answer: 343 in.

i wish that helped :)

Ne4ueva [31]3 years ago
3 0

Answer:

3+4+3+4+3+4+3+4=28

Step-by-step explanation:

the permiter is 28in

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First, let's cancel out the x by multiplying 2x + 18y = -9 by -2.

-2 ( 2x + 18y = -9) = -4x -36y = 18

Then, we combine the two equations.

-4x + 4x = 0

18y - 36y = -18y

-27 + 18 = -9

Our new equation is -18y = -9.

Now, divide both sides by -18.

-18y / -18 = y

-9/ -18 = 1/2

y = 1/2

We can plug in a value for y since y = 1/2 now.

Let's use 2x + 18y = -9

Plug in y.

2x + 18(1/2) = -9

2x + 9 = -9

Then, subtract 9 from both sides.

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Divide by 2.

2x/2 = x

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Lastly, we can plug in both x and y values to see it works.

2(-9) + 18(1/2) = -9

-18 + 9 = -9

Therefore, the values of x and y does work.

x = -9

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Step-by-step explanation:

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Step-by-step explanation:

To find the inverse function, we want to switch the y with the x and vice versa. Then we solve for y.

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x-7=\sqrt{y}        [square both sides]

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Now, we know that f⁻¹(x)=(x-7)².

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