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alisha [4.7K]
3 years ago
15

Triangle DEF is rotated 180 degrees about the origin to form triangle D'E'F'.What are the coordinates of the vertices of triangl

e D'E'F'?
D' (–1, –4); E'(–2, –1); F'(–1, –5)

D' (4, 1); E'(1, 2); F'(5, 1)

D' (1, –4); E'(2, –1); F'(5, –1)

D' (4, –1); E'(1, –2); F'(1, –5)

Mathematics
1 answer:
kvv77 [185]3 years ago
8 0

Answer:

D

Step-by-step explanation:

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ludmilkaskok [199]

Answer:a = - 2

b = - 3

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Step-by-step explanation:

a + 5b - c = - 20 - - - - - - - - - 1

4a - 5b + 4c = 19 - - - - - - - - - 2

-a - 5b - 5c = 2 - - - - - - - - - - - 3

Adding equation 1 and equation 2, it becomes

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Multiplying equation 2 by 1 and equation 3 by 4, it becomes

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Adding both equations, it becomes

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Substituting b = - 3 and c = 3 into equation 1, it becomes

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3 years ago
What is 6-2p=p+9 ?Because I don't know it​
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Hey there!

  • Firstly, you have to \bold{simplify} each of the sides of your equation
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  • \rightarrow\bold{-2p+6=p+9}
  • Now that you have that  portion out of the way, we could  move on to our second step... which is to \bold{subtract} by the value of  \bold{p} on each of your sides
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  • Thirdly, you have to \bold{subtract} by the number \bold{6} on each of your sides
  • \bold{-3p+6-6=9-6\downarrow}
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Good luck on your assignment and enjoy your day!

~\frak{LoveYourselfFirst:)}

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Answer:

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Step-by-step explanation:

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