Answer:
88.796
Step-by-step explanation:
you multiply them...
The letter x has two lines of symmetry.
Answer:
This is an improper fraction so we need to make it a mix fraction.
Step-by-step explanation:
21/10 = 10/10+10/10+1/10
10/10=1
So your final answer will be 
You use the formula C=2(3.14)r r is the radius and in this situation 2 so the answer will be 12.56
Find common factor, in this case the common factor is 10x
So the answer would be 10x(x^6 - y^10)