1silt definition of supplementary angles. 2. < 5 and 27 are supplementary. 3. m25+ m27 = 180° given exterior sides in opposite rays. if lines are il, corresponding angles are equal. substitution 4. m 1 = m_5 5. m21+ m27 = 180°

you never say the total so we cant find the percentage used for petrol

step-by-step explanation:

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.