anonymous
  • anonymous
The legs of an isosceles triangle have lengths x + 1 and -x + 7. The base has length 3x - 3. What is the length of the base? A. 4 B. 6 C. 3 D. cannot be determined
Geometry
chestercat
  • chestercat
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anonymous
  • anonymous
The legs are congruent if is an isoceles triangle.
anonymous
  • anonymous
So you set it equal to each other to find x. After you did that, plug the x into the base length 3x-3
anonymous
  • anonymous
@Shalante I'm confused.. Can you explain more? I don't really understand Geometry that well..

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anonymous
  • anonymous
@RoseDryer can you help with this question?
anonymous
  • anonymous
Do you know what congruent means?
anonymous
  • anonymous
anonymous
  • anonymous
Whenever an isoceles triangle is congruent, its leg are the same in length. Since the legs have lengths x+1 and -x+7. You must make them equal to each other by solving for x. After you solve for x, plug that x back to the base, since the base relies on the x to figure out its length.
anonymous
  • anonymous
How do I solve for x? @Shalante
anonymous
  • anonymous
Set them equal to each other x+1=-x+7. Know this? It is from Algebra 1
anonymous
  • anonymous
Yes, but I barely remember it. What number do I subtract from each side? @Shalante
anonymous
  • anonymous
make the x into one side, so you add x to the left side and the right side.
anonymous
  • anonymous
But there's already an x on the left and right side? @Shalante and i dont have a lot of time left to finish my exam..
anonymous
  • anonymous
Hello? @Shalante

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