100 POINTS PLZ HELP
I NEED THE REST EXEPT 2 I FINISHED THAT ONE

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?