Aballon rises 340 ft into the air, then it descends 130 ft

This is written as 340 - 130 or 340 + (-130); I don't know if you need the answer or not but it is equal to 210!

210 is your answer

Step-by-step explanation:

340-130 or 340+(-130) which is how I did it both gives you an answer which is 210.

Hope this helps you a lot!

it happens during combustion and impacts the environment because the plants and trees take in that and it can cause them to die.

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all