Answer:
Definition: The enclosing boundary of a curved geometric figure, especially a circle.
Step-by-step explanation:
Answer:
a = 
Step-by-step explanation:


(now you can multiply the whole equation by 6 to remove the fractions
4a - 1 = 2
4a = 2+1
4a = 3
a = 
Answer:
a
Step-by-step explanation:
368
Answer:
D
Step-by-step explanation:
Passes through the x-axis at r and k
257.80÷5=49.56 ≈50
50÷5=10