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gulaghasi [49]
4 years ago
10

I need help with "Equation practice with angles Geometry" problem.​

Mathematics
1 answer:
Oksi-84 [34.3K]4 years ago
5 0

Answer:

  • x = 6°
  • ∠B = 126°

Step-by-step explanation:

The identical arc symbols on the two angles indicates the angles are congruent. Also, these are alternate interior angles where a transversal crosses lines marked as parallel, so they are congruent:

  ∠A = ∠B

  8x +78° = 2x +114° . . . . . substitute the given expressions

  6x = 36° . . . . . . . . . . . . . subtract 2x+78° from both sides

  x = 6° . . . . . . divide by 6

  ∠B = 2x +114° = 2·6° +114° . . . . . put the value of x into the expression

  ∠B = 126°

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jok3333 [9.3K]

Answer: x = 27

Step-by-step explanation:

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5x=180-45

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3 years ago
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
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S_A_V [24]

Answer:

Step-by-step explanation:

Using the cosine theorem:

c^{2} =a^{2} +b^{2} -abcos\beta

952^{2} =560^{2} +575^{2} -560*575cos\beta

\beta =cos^{-1} (\frac{560^{2}+575^{2}-952^{2}   }{2*560*575} )

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4 0
3 years ago
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Paul [167]

Answer:

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Answer:

6.5%

Step-by-step explanation:

Percentage error formula =

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Therefore, the percent error = 6.5%

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