Arias has a hot air balloon. When full the balloon is a sphere with a radius of 9 meters, she fills it with hot air whose density is 0.9 kilometers per cubic meter. Since this is less dense than the sit in the atmosphere, the balloon is carried upwards. How much air does Ariah need to fill the balloon?

Nine more than four times a number is the same as one less than twice the number. find the number?

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.

Ineed your ! i was to turn this into pond first thing i gotta do is outline the inside with this plastic how big should i cut the plastic the height: 10 1/2” the length: 40” the width: 12” me !