Mario sold concessions during the hockey tournament at the high school. he sold bottled water for $2.50 each and hamburgers for $5.50 each. by the end of the tournament, mario’s sold 350 items for a total of $1,325. which statements about the concession sales are true? check all that apply.

suppose he sold w numbers of bottled water and h numbers of hamburger.

mario's sold 350 items which means sum of w and h must be equal to 350. so,

w+h=350.

each bottled water cost $2.50. so, w bottled water cost 2.50w.

similarly each hamburgers cost $5.50. so, h hamburgers cost 5.50h.

mario sold total of 1,325. so, sum of 2.50w and 5.50h must be equal to 1,325.hence,

2.50w+5.50h=1325.

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.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.