If triangle feg is an isosceles triangle, which of the following statements is not true?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?