Assuming it’s a regular polygon :225
The answer would be y = 3.1
19.9 + 8 = 9y
27.9 = 9y
27.9/9 = y
3.1 = y
y = 3.1.
Answer:

Step-by-step explanation:
Let us apply the distributive property to find an equivalent expression for:

For all real numbers a, b, and c, the distributive property says that:

We apply this property to get:


We simplify the RHS to get:

Answer:
280
Step-by-step explanation:
each individual line is a +20, therefore one line before 300 would be 300-20=280
Answer: B
Step-by-step explanation: