dillonhowardp6z57k dillonhowardp6z57k
  • 23-09-2019
  • Mathematics
contestada

If ∠C and ∠D are vertical angles and m ∠ C = x + 5 and m ∠ D = –2x + 80, what is m ∠ C?

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calculista
calculista calculista
  • 07-10-2019

Answer:

m∠C=30°

Step-by-step explanation:

we know that

Vertical Angles are the angles opposite each other when two lines cross. They are always equal

so

m∠C=m∠D

substitute the given values

[tex](x+5)\°=(-2x+80)\°[/tex]

Solve for x

[tex]x+2x=80-5\\3x=75\\x=25[/tex]

Find the measure of angle C

m∠C=(x+5)°

substitute the value of x

m∠C=(25+5)=30°

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