Jim's music library on his phone holds $1,900 songs. The songs have an average time of 3.5 minutes. You scientific notation to find the total number of seconds to playlist will play Express the answer to the exact decimal place.
A. 3.99 * 10 ^ 5 seconds
B. 3.99 * 10 ^ 4 seconds
C. 0.399 * 10 ^ 6 seconds
D. 3.99 * 10 ^ 3 seconds
To find the total number of seconds the playlist will play, we need to multiply the number of songs by the average time per song.
Number of songs = 1,900
Average time per song = 3.5 minutes = 3.5 * 60 seconds = 210 seconds
Total number of seconds = 1,900 * 210 = 399,000 seconds
399,000 can be written in scientific notation as 3.99 * 10^5 seconds.
Therefore, the answer is A. 3.99 * 10^5 seconds.
and government class Nadia computer the amount of debt of the Federal government after a third of it was paid in 1995. The calculator displayed the number 3.28E12. what is the number in scientific notation?
A. 12 * 10 to the 3.28 power
B. 3.28 + 10 to the 12th power
C. 3.28 * 10 to the 12th power
D. 3.28 * 10 to the negative 12th power
The number 3.28E12 is already in scientific notation. The "E" represents "times ten to the power of." In this case, E12 means the number should be multiplied by 10 to the power of 12.
Therefore, the number in scientific notation is C. 3.28 * 10 to the 12th power.
To find the total number of seconds the playlist will play, we need to multiply the number of songs by the average time of each song.
Number of songs: 1,900
Average time per song: 3.5 minutes
First, convert the average time per song to seconds:
3.5 minutes * 60 seconds/minute = 210 seconds
Next, multiply the number of songs by the average time per song:
1,900 songs * 210 seconds/song = 399,000 seconds
Finally, express the answer in scientific notation:
399,000 seconds = 3.99 * 10^5 seconds
Therefore, the answer is A. 3.99 * 10^5 seconds.
To find the total number of seconds Jim's music playlist will play, we need to multiply the number of songs by the average time of each song in minutes and then convert the result to seconds.
First, we multiply the number of songs by the average time:
1,900 songs * 3.5 minutes/song = 6,650 minutes
Then we convert the minutes to seconds by multiplying by 60:
6,650 minutes * 60 seconds/minute = 399,000 seconds
Next, we need to express the answer in scientific notation. To do this, we move the decimal point to the right until we have a number between 1 and 10. In this case, we can write 399,000 as 3.99 * 10^5.
Therefore, the answer is A. 3.99 * 10^5 seconds.