Question

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

Answer 1

The legs of an isosceles triangle are equal in length.
Equate the two legs and solve for x.
Then plug the x value into base 3x-3 and compute the base.

Answer 2

Thanks:)

Answer 3

You are welcome.

Answer 4

I still don't understand it.

Answer 5

"The legs of an isosceles triangle have lengths x + 1 and -x + 7"
We know the legs of the isosceles triangle are equal in length. Therefore,
x + 1 = -x + 7
Solve for x.

Then sub that x in the base which has a length of 3x - 3 and compute the length of the base.

Answer 6

Ok I get it now.