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A pigeon was sitting 5 meters from the base of a telephone pole and flew 13 meters to reach the top of the pole. How tall is the telephone pole?

12 meters

Step-by-step explanation: We can use the Pythagorean Theorem again, but this time we are solving for B!

A² + B² = C²

5² + B² = 13²

25 + B² = 169

169 - 25 = B²

144  = B²

= B

12 = b

Hope this helps :)

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.