Yes it is equivalent.Good luck
1. If AB is tangent to the circle, then

We have


so AB is indeed tangent to the circle.
2. The unlabeled leg is another radius of the circle so it has length 8. Then if AB is tangent to the circle,

but we have


so that cannot be a right triangle and AB is not tangent to the circle.
Answer:
80
Step-by-step explanation:
The trend is multiplying by 2. 5x2=10 10x2=20 20x2=40 40x2=80
For this case we must factor the following expression:

We take common factor 5:

We have two groups within the parentheses:
Group 1: 
Group 2: 
We factor each group:
Group 1: 
Group 2: 
Rewriting we have:

Answer:
