Answer:
56.55
Step-by-step explanation:
C=2πr=2·π·9≈56.54867
Answer:
k = 3
Step-by-step explanation:
Given that y and x are directly related then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 81 when x = 27
k = = = 3
These are vertical angles so they are equal so
6a + 11 = 2a + 83
now solve for a
Answer:
3
*if you ever need to do more math like this, I suggest using desmos :)