on a standardized test, a score of 86 falls exactly 1.5 standard deviations below the mean. if the standard deviation for the test is 2, what is the mean score for this test?

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.

How do i do this activity, is appreciated

Give me the equations of two lines that have the same slope but are not parallel.