on the album ¨1989¨ by taylor swift blank space is 12 seconds longer than shake it off if the combined time of the two songs is 7 minutes and 30 seconds how long is shake it off give your answer in minutes and seconds

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?