Answer:
2
Step-by-step explanation:

Answer:

Step-by-step explanation:




<h3>Hope it is helpful...</h3>
Answer:
10 units
Step-by-step 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


Substitute the value of x=-9
Then , we get BC=
units
Answer: BC=10 units