Question

Find BC if BD = X + 29, AD = x = 39, AC = 20, and BC = x + 19

Answer 1

10 units

Explanation:

We are given that

BD=x+29

AD=x+39

AC=20

BC=x+19

AC=AB+BC

20=AB+x+19

AB=20-x-19=1-x

AD=AB+BD

`x+39=1-x+x+29`

`x=30-39=-9`

Substitute the value of x=-9

Then , we get BC=
`-9+19=10` units

Answer: BC=10 units