Jims music library on his phone holds 1900 songs. the song have an average time of 3.5 minutes. use scientific notation to find the total number of seconds the playlist will play express the answer to the exact decimal place.
To find the total number of seconds the playlist will play, we need to multiply the number of songs by the average duration of each song.
Total number of seconds = 1900 songs * 3.5 minutes/song * 60 seconds/minute
To express this answer in scientific notation, we divide the number by 10^2.
Total number of seconds = (1900 * 3.5 * 60) / (10^2)
Total number of seconds = 399000 / 100
Total number of seconds = 3990
Therefore, the total number of seconds the playlist will play is 3990 seconds.
Sorry for not being clear on the answer choices you have 4 options:
A 3.99 x 10^3 seconds
B 3.99 x 10^4 seconds
C 0.399 x 10^6 seconds
D 3.99 x 10^5 seconds
To express the answer in scientific notation, we need to move the decimal point to have one digit before it.
The total number of seconds is 3990 seconds, which can be written as 3.99 x 10^3 seconds.
Therefore, the correct answer is option A: 3.99 x 10^3 seconds.
In chemistry class, carlos calculated the number of molecules in 100 moles. the calculator displayed the number 6.02e25. what is the number of molecules in 100 moles in scientific notation?
A 6.02+10^25
B6.02x25
C 25x 10^6.02
D 6.02 x 10^25
The number of molecules in 100 moles is given by 6.02 x 10^25.
Therefore, the correct answer is option D: 6.02 x 10^25.
In government class, nadia computed the amount of debt of the federal government after a third of it was paid in 1995. the calculator displayed the number 3.28312 what is this number in scientific notation?
A 3.28+10^12
B3.28x10^-12
C3.28x10^12
D 12x10^3.28
To express the number 3.28312 in scientific notation, we need to move the decimal point to have one digit before it.
Therefore, the number 3.28312 can be written as 3.28 x 10^0.
Therefore, the correct answer is option A: 3.28 x 10^0.
Answer A is 3.28+10^12 not 3.28 +10^0
Apologies for the confusion. You are correct.
To express the number 3.28312 in scientific notation, we need to move the decimal point to have one digit before it.
Therefore, the number 3.28312 can be written as 3.28312 x 10^0.
Therefore, the correct answer is option B: 3.28312 x 10^0.