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Monica [59]
3 years ago
15

PLZ HELP!!!

Mathematics
2 answers:
Goshia [24]3 years ago
6 0
The first and last choices are the only ones whose angles total 180 degrees, so they're the only possible triangles.
vagabundo [1.1K]3 years ago
3 0
30+60+90=180
55+35+80=180
25+65+90+180
The others are not possible as they do not have 180 degrees
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Answer:

(-4, -1)

Step-by-step explanation:

x = 4y

-4x - y = 17

Plug in 4y for x in the second equation:

-4(4y) - y = 17

Simplify. Remember to follow PEMDAS. Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other.

First, multiply 4y with -4:

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Isolate the variable, y. Divide -17 from both sides:

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x = -4, y = -1

Answer: (-4, -1)

~

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Step-by-step explanation:

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