Answer:
2010.
Step-by-step explanation:
We have been given an exponential growth formula
, which represents number of passengers traveling by airplane since 1990.
To find the year in which 900 million passengers will travel by airline, we will equate the given formula by 900 and solve for t as:



Take natural log of both sides:

Using property
, we will get:




This means that in the 20th year since 1990, 900 million passengers would travel by airline.

Therefore, 900 million passengers would travel by airline in 2010.
7
−
3
1
=
−
3
4
k
k
7
−
31
=
−
34
7kk−31=−34
2
7
−
3
1
=
−
3
4
I think that’s the right answer
Answer:
The area of the bases must be the same.
Step-by-step explanation:
Volume=LxWxH
Length and width create the base so another formula would be V=B•h, and if they have the same height they would need the same base. Hope this helps, sorry if I’m incorrect.
1800 divided by 25 is 72. He types 72 words per minute.
Answer:
percent- 40%
decimal- 0.4
percent- 2/5
Step-by-step explanation:
you divide 30 by 12 because he practices piano 12/30 days of the month