Answer:

Step-by-step explanation:
From the question we are told that:
Sample size 
Standard deviation 
Confidence level 
Degree of Freedom 
Therefore
Test T from table is given

Generally the equation for Confidence interval CI is mathematically given by



I think it means "side-side-side", meaning that two triangles are congruent if their side lengths are the same.
The answer is 50
32 + 1.8(10) = 50
(1.8*10=18)
I think they will meet in 4 minutes.
Explanation
10+15+15+15+15=70
150-20-20-20-20=70
Every minute the first balloon goes up 15 meters and the second balloon goes down 20 meters.