Question

.In the diagram below, DE || BC. Which equation can be used to find x?

Answer 1

The figure given contains a Big triangle ABC with a line ED parallel to BC drawn in between the triangle.

This implies that we have similar triangles because

Hence, because of this, the sides of the triangles are proportional.

This proportion is given below:

`(AE)/(AD)=(AB)/(AC)`

AE= 8

AD = 10

AB = AE + EB = 8 + 18 = 26

AC = AD + DC = 10 + x

Hence, we can write the right expression as: