Answer: x=9
Step-by-step explanation:
I made an equation by putting both shapes equal each other since they have the same perimeter and I simplified the equation to end up with 9 as the value of x.
20 * b(squared) would be the simplification of b5 * b4
You are just multiplying the two number together. You just have to remember that b4 is just b * 4... So b * 4 * b * 5 would equal 20 * b squared
You might want to double check... bit rusty here.
There isnt one because 13 and 39 are prime. Hope this helps! :)
