Assume that when adults with smartphones are randomly selected, 51%use them in meetings or classes. If 7 adults smartphone users are randomly selected, find the probability that exactly 2 of them use their smartphones in meetings or classes.

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

(1,4)

step-by-step explanation: