1. if x० and 70० makes an angle of complement, find the value of x. 2.if 120० and x० makes an angle of supplement ,find the value of 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?

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?

Find the values of the variables and the lengths of the sides of this kite.