3 years ago

What is the exterior angle of 20-gon

Mathematics

1 answer:

I am Lyosha [343]3 years ago

8 0

Hey, bud, my math isnt all tht great, but ill try to help

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How do you do this?<br> -5x+y=-3<br> 3x-8y=24

Katena32 [7]

$-5x+y=-3 \ \ \ |\times 8 \\
3x-8y=24 \\ \\
-40x+8y=-24 \\
\underline{3x-8y=24 \ \ \ \ \ \ \ } \\
-40x+3x=24-24 \\
-37x=0 \ \ \ |\div (-37) \\
x=0 \\ \\
3x-8y=24 \\
3 \times 0 -8y=24 \\
-8y=24 \ \ \ |\div (-8) \\
y=-3 \\ \\
\boxed{(x,y)=(0,-3)}$

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3 years ago

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4 years ago

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Illusion [34]

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Correct choice is A

Step-by-step explanation:

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From the given diagram you can see that the variable x changes from -4 to the 9. So the domain of the function is $-4\le x\le 9.$

Also the variable y takes its values from -4 to 8. Thus, the range is $-4\le y\le 8.$

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