A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

The height of a triangle is three inches less than the lenght of the base of the triangle. The area of the triangle is 90 in.2. Find the lenght of the triangle.

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    H = B - 3 1st sentence Area of Triangle is 1/2 BH Substitute in for H from the first sentence. 90 = 1/2 B (B - 3) multiply both side by 2 180 = B(B - 3) 180 = B^2 - 3B make it = to 0 0 = B^2 - 3B - 180 Factor 0 = (B - 15)(B + 12) B = 15 or B = -12 You don't use the -12 because that can't be the Base length B = 15 H = 15 - 3 = 12

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.