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Svet_ta [14]
2 years ago
9

Please help, this is due today:

Mathematics
1 answer:
Marina86 [1]2 years ago
8 0

Answer:

x = 17

Step-by-step explanation:

∠ DCE = ∠ ACE ( vertically opposite angles )

The sum of the 3 angles in a triangle = 180° , then

∠ DCE = 180° - (100 +x) = 180 - 100 - x = 80 - x

∠ ACE = 180 - (49 + 4x) = 180 - 49 - 4x = 131 - 4x

Equating the 2 angles

80 - x = 131 - 4x ( add 4x to both sides )

80 + 3x = 131 ( subtract 80 from both sides )

3x = 51 ( divide both sides by 3 )

x = 17

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Answer:

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Step-by-step explanation:

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Now use algebra to have the 30c be on one side and the rest on the other:

36p + 30c = 142.80 | -36p

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Go back to one of the "30c" equations and plug in the value for p:

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30c = 42 | /30

c = 42/30

c = 1.4

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3 years ago
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