The temperature is -2°F at 6 AM. during the next three hours the temperature increases 15°F what is the temperature at 9 AM

The temperature at 9 AM was 13°F, If the temperature is -2°F at 6 AM and the next three hours the temperature increases 15°F.

Step-by-step explanation:

The given is,

          Temperature is -2°F at 6 AM

          For the next three hours from 6 AM the temperature increases 15°F

Step:1

           We need to find the temperature at 9 AM,

                    Let, X - Temperature at 6 AM

                            Y - Temperature at 9 AM

Step:2

         Where,

                        X = -2°F

          From the given, Y becomes

         (  during the next three hours the temperature increases 15°F )

                      Y = X + 15

           Substitute the X value,

                          = (-2 + 15)

                      Y = 13°F

Result:

       Thus the temperature at 9 AM was 13°F, If the temperature is -2°F at 6 AM and the next three hours the temperature increases 15°F.

it should be a and d. lmk if i'm wrong xd

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.