Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

TestTakingLifesaver Group Title

Which expression represents the area of the triangle? base=2x+12, height x+7 A) 3x + 19 B) 3x2 + 84 C) x2 + 13x + 42 D) 2x2 + 26x + 84

  • one year ago
  • one year ago

  • This Question is Closed
  1. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    A = bh/2 So, you would multiply the 2 expression for "b" and "h" (that are in "x") and divide by "2". Hint: It's easier to divide the "base" (or b) expression first by "2" and then simply multiply that by the expression for "h".

    • one year ago
  2. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So, what is the expression for for the base divided by "2"?

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

    1x+6

    • one year ago
  4. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Very good. So, now, all you have to do is multiply your answer by "x + 7" (x + 6)(x + 7) = ?

    • one year ago
  5. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Are you stuck?

    • one year ago
  6. TestTakingLifesaver Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    46

    • one year ago
  7. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    When you have an expression like: (x + a)(x + b) It is: x(x + b) + a(x + b) = x^2 + bx + ax + ab = x^2 + (a + b)x + ab So, just substitute a = 6 and b = 7 in that last equation

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

    thank you this is so confusing

    • one year ago
  9. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Math can be, but if you take it step by step, it won't trick you. IMath is like a friend that speaks a foreign language.

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

    i'll practice and see if i can learn the langage

    • one year ago
  11. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    That's a great attitude! You'll succeed if you stick with it. And you might want to go over that equality expansion a couple of times because it could clear things up for you.

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

    ok thanks so much

    • one year ago
  13. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    You're very welcome and nice working with you!

    • one year ago
  14. tcarroll010 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    And thx for the recognition! @TestTakingLifesaver Good luck in all of your studies.

    • one year ago
    • Attachments:

See more questions >>>

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.