Which statement can you use to conclude that quadrilateral XYZW is a parallelogram? The image is of a regular parallelogram XYZW with base WZ and diagonals intersecting each other at point N. A. WZ¯¯¯¯¯¯¯≅ZY¯¯¯¯¯¯ and XW¯¯¯¯¯¯¯≅YZ¯¯¯¯¯¯ B. WN¯¯¯¯¯¯¯=NZ¯¯¯¯¯¯ and YN¯¯¯¯¯¯=NX¯¯¯¯¯¯¯ C. WZ¯¯¯¯¯¯¯≅XY¯¯¯¯¯¯ and XW¯¯¯¯¯¯¯≅WZ¯¯¯¯¯¯¯ D. WZ¯¯¯¯¯¯¯≅XY¯¯¯¯¯¯ and XW¯¯¯¯¯¯¯≅YZ¯¯¯¯¯¯

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.

step-by-step explanation:

cats

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363