Math help! Please show work!?

0 ⤊

Math help! Please show work!?

If there are 6*10^9 people on the Earth and there is enough freshwater to provide each person with 8.79 * 10^5 L, how much freshwater is on Earth?

2007-09-01 05:40:38 · 2 answers · asked by earthgirl 2 in Science & Mathematics ➔ Mathematics

2 answers

Multiply the two numbers to get:

(6*10^9 PERSONS) *(8.79 * 10^5 L/PERSON) = 52.74 * 10^(9+5) L

52.74 * 10^14 L
Now, since the numbers were given in scientific notation (1 whole number, a decimal then a power of 10) then it is good practise to maintain the same format. So your answer becomes:

5.274 * 10^15

By moving the decimal point one position to the left one position and incrementing the power of ten by one to compensate.

2007-09-01 06:01:31 · answer #1 · answered by 037 G 6 · 0⤊ 0⤋

6*10^9 * 8.79 * 10^5 = 5.274*10^15L

2007-09-01 12:54:47 · answer #2 · answered by Rajkiran 3 · 0⤊ 1⤋