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?
D. cannot be determined
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The legs are congruent if is an isoceles triangle.
So you set it equal to each other to find x.
After you did that, plug the x into the base length 3x-3
@Shalante I'm confused.. Can you explain more? I don't really understand Geometry that well..
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@RoseDryer can you help with this question?
Do you know what congruent means?
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.
How do I solve for x? @Shalante
Set them equal to each other x+1=-x+7.
It is from Algebra 1
Yes, but I barely remember it. What number do I subtract from each side? @Shalante
make the x into one side, so you add x to the left side and the right side.
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..