In dry air, the temperature decreases by about 0.65 °c for each 100-m increase in altitude.

a) the temperature in red deer, alberta is 10 degrees celsius on a dry day. what is the temperature outside an aircraft 2.8km above the city?

b) the temperature outside an aircraft is 1600 meters above red deer is -8.5 degrees celsius what is the temperature in this city?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265

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!