Graph and show points for 3x+6yless than or equal to 12, -x+y greater than or equal to 0, x is greater than or equal to 0, y is greater than or equal to 0. show points and shading? im confused bad

Step-by-step explanation:

Given equations are

Now the inequalities intersect at x=

y=

and we have to satisfy this also

Above all conditions is shown in graph

and the shaded  area is the required area

For   put (0,0)

it satisfy the point i.e. (0,0) lie on that side which satisfy the inequality similarly check for

put (4,0) it do not satisfy the inequality therefore it lies on the side which do not satisfy the inequality

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.