Question

Amaya is asked to find the side lengths of the triangle shown below. What is her error?

Answer 1

Answer:

Her error was that she equated 2x to 6 instead of equating 2x to 3x-5

Step-by-step explanation:

Find the diagram of the question attached.

According to the triangle given, you can see that the base angles are equal. This shows that the triangle is an isosceles triangle. If the base angles are the same, this means that the length of the slant sides are also equal i.e

2x = 3x-5

Get x first;

2x = 3x-5

2x - 3x = -5

-x = -5

x = 5

Get the side length

For side length 2x, the length is 2(5) = 10

For side length 3x-5, the length is 3(5) - 5 = 10.

Hence the length of the sides is 10

Amaya is wrong because she equated the wrong sides. She equated 2x to 6 instead of equating 2x to 3x-5 as shown in the calculation above.