A communication company is planning to launch a new satellite into orbit to improve their network. The range of communication for their satellite is 4,500 miles. They know that the approximate radius of the earth is 3,960 miles. The company is trying to determine what height to put the satellite at so that it has maximum coverage of the earth. Determine at what height about the surface of the earth the satellite needs to be placed.
To the nearest mile, the satellite needs to be placed at a height of
miles above the earth.

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.

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168

10 - 75

step-by-step explanation:

there's nothing attached so it's most likely anything in that range.