Answer:
Help with what....??
Step-by-step explanation:
A hypothesis is only tentative: to make sure it's valid, you have to test it.
Answer:

Step-by-step explanation:
The distributive law states that

The expression 3+21a+15b consists of three terms:
- 3=3·1;
- 21a=3·7a;
- 15b=3·5b.
You can see that 3 is the common factor of these three terms, thus

A pentagon has 5 sides.
Hope this helped :)
Answer:
51.90
Step-by-step explanation:
the answer is 51.90
hope this helped!!!