Line segment YZ is a tangent to circle X , and X is the center of the circle. What is the length of the radius of the circle?
A.12.8
B.12
C.6
D.4

C. 6

Step-by-step explanation:

8^2+r^2=10^2

64+r^2=100

r^2=36

Therefore, r=6

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

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step-by-step explanation:

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