Answer:
The radius of the circle is 
Step-by-step explanation:
we know that
The circumference of a circle is equal to

In this problem we have


substitute and solve for r


Answer:
4200
Step-by-step explanation:
4280=(?)+80
So the answer is 4200
Answer:
wow
Step-by-step explanation:
Answer:
(4, 9) and (-10, -8)
Step-by-step explanation:
The first digit may be 1 or 8.
The second digit may be 1, 2, 4, 8.
The third digit may be 1, 3, 5, 7, 9.
There are 
The probability that this is the correct code is 