15
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1-) isolate the radical symbol on one side of the equation
2-) square both sides of the equation to eliminate the radical symbol
57. ON Monday Jordan biked 2 ¾ miles
=> On Wednesday he biked twice as many miles as he did on Monday
=> 2 (2 3/4)
On Friday he biked 8 ¼ miles.
Now, let’s find out the difference of miles did Jordan biked on Wednesday and Friday.
=> 2 ¾ convert to decimals = 2.75
=> twice as 2.75 = 2(2.75)
=> he biked 5.5 miles or 5 and ½ miles on Wednesday
=> 8 and ¼ or 8.25 – 5.5 = 2.75
Thus, he biked more than 2.75 miles on Friday compare to Wednesday.
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.
Answer: Your input has more than one equals sign.
Step-by-step explanation:
