Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

LifeIsADangerousGame

  • one year ago

Could someone help me with this Geometry question please?

  • This Question is Closed
  1. LifeIsADangerousGame
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    m<PJK = m<DJB bec of vertical angles. Substitute the expressions with x and solve for x. Then use x to get the measure of angle PJK Then m<PJK + m<KJD = 180

  3. LifeIsADangerousGame
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Could you explain it a little more? I don't really understand..

  4. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1359930331078:dw|

  5. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    The two angles I marked are called vertical angles. Vertical angles are congruent. That means they have the same measure. |dw:1359930401555:dw|

  6. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Since the measure of one angle is 3x - 40 and the other one is 2x - 10, and the measures are equal, that means 3x - 40 = 2x - 10 If you solve this equation, you get the value of x.

  7. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Do you follow so far?

  8. LifeIsADangerousGame
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes, so it's 3x - 40 = 2x - 10 +40 +40 3x = 2x + 30 -2x -2x x = 30 Is that right?

  9. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Good. Now since the measures of one angle is 3x - 40, and x = 30, what is the measure of the angle?

  10. LifeIsADangerousGame
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No wait, sorry it's 3(30) - 40

  11. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1359930857941:dw|

  12. LifeIsADangerousGame
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so that's 50 degrees?

  13. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    right

  14. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1359930986373:dw|

  15. LifeIsADangerousGame
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y would equal 130 degrees

  16. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Correct, and that's what you are looking for.

  17. LifeIsADangerousGame
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Awesome! Thank you so much :D It looked so complicated o.o

  18. mathstudent55
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    If you break down the problem into simple steps, it's not that complicated. You're welcome.

  19. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.