Kendra finds the dimensions of a sticky note. She uses a meter stick to determine that the dimensions are 1.25×10−8 meters wide by 2.5×10−6 meters long. Use scientific notation to write the dimensions in millimeters. Note: 1 meter is equal to 1,000 millimeters. (1 point)
To convert the width to millimeters, we need to multiply it by 1,000.
1.25 × 10^-8 × 1,000 = 1.25 × 10^-5 millimeters.
To convert the length to millimeters, we also need to multiply it by 1,000.
2.5 × 10^-6 × 1,000 = 2.5 × 10^-3 millimeters.
The dimensions of the sticky note in millimeters are 1.25 × 10^-5 mm wide by 2.5 × 10^-3 mm long.
Jim’s music library on his phone holds 1,900 songs. The songs 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.(1 point)
To find the total number of seconds the playlist will play, we need to multiply the number of songs by the average song length in minutes and then convert the result to seconds.
1,900 songs * 3.5 minutes = 6,650 minutes
To convert minutes to seconds, we need to multiply by 60.
6,650 minutes * 60 seconds = 399,000 seconds
Therefore, the total number of seconds the playlist will play is 399,000 seconds.