Lines m and n are parallel when x=

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

If the value of cos330°is√3/2 then find cos 165°.

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!