Which is closest to the number of gallons of water that was required - ProProfs Discuss
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Which is closest to the number of gallons of water that was required if 24 ships passed through the canal, moving from the Atlantic Ocean to the Pacific Ocean?
Each ship that passes through the Panama Canal requires about 52 million gallons of water to move the ship through the canal from the Atlantic Ocean to the Pacific Ocean.



A. 1.2 x 10^8 gallons
B. 1.2 x 10^9 gallons
C. 8.8 x 10^8 gallons
D. 8.8 x 10^9 gallons

This question is part of Algebra 1 Semester Exam
Asked by Dinkinsk, Last updated: Jun 20, 2018

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3 Answers

John Adney

John Adney

Answered on Jan 15, 2017

The answer is 1.2 x 10^8.
​When you calculate 52,000,000 by 24, you get 1,248,000,000 and because ofthe rule of scientific notation, you get 1.2 x 10^#. Now, if you count from the right, there are six 0's and the digits 2, 4, and 8. So you can count 9 digits from the right before you can get to where the decimal point is. Therefore it is 1.2 x 10^8.

​ The rule of scientific notation: you can only have a one digit number before the decimal point. In this case it is 1 (from 1.2). You can't have 10 or 0 in this spot and are reserved for digits 1-9.
 Reply

eunice.

Eunice.

Answered on Jan 15, 2017

The answer is 1.2 x 10^8.
​When you calculate 52,000,000 by 24, you get 1,248,000,000 and because ofthe rule of scientific notation, you get 1.2 x 10^#. Now, if you count from the right, there are six 0's and the digits 2, 4, and 8. So you can count 9 digits from the right before you can get to where the decimal point is. Therefore it is 1.2 x 10^8.

​ The rule of scientific notation: you can only have a one digit number before the decimal point. In this case it is 1 (from 1.2). You can't have 10 or 0 in this spot and are reserved for digits 1-9.
 Reply

John Smith

John Smith

Answered on Dec 10, 2016

1.2 x 10^9 gallons

^ indicates an exponent ie. 3^2 is three squared or three to the second power.
 Reply

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