Answer:
its 68mm
Step-by-step explanation:
Assuming T, B and N are all on the same line, then we can say
BT + TN = BN
which is the segment addition postulate.
Subtract TN from both sides to get
BT + TN = BN
BT + TN - TN = BN - TN
BT = BN - TN
BN - TN = BT
Which is what choice C is saying. Therefore the answer is choice C.
30 The answer is 30. Hope this helps you!
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50)1650
-165
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00
-0
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00
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