X is greater than or equal to 2.
The symbol for "greater than or equal to" is a "greater than" sign over a horizontal dash.
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Least common multiple = 7x X 2 = 14x
2 x 2 x 2 x 3 x 5 = 180
1
Let x be the number of people: P(among x, at least two people have same birthday) = 2/x * 1/(x-1) >0.6 2/[(x)x-1] = 0.6 2 / 0.6> x^2 - x x^2 - x > 10/3 3x^2 - 3x - 10 > 0 x > [3+- (3^2-4*3*(-10))^(1/2)] / 2*3 x > (3 + (9+120)^(1/2)) /6 x > 2.39 Therefore x = 3
i think it is if you simlify it the answer would be x+(-2)>8 your welcome aislinn