In the United States, the average public school teacher currently earns an annual salary near $55,202. Reported national average
salaries for the last six decades are listed below. Year National Average
Teachers’ Salary
1960 $4,995
1970 $8,626
1980 $15,970
1990 $31,367
2000 $41,807
2010 $55,202
Determine the average mean salary for the six decades, 1960 – 2010.
For the first part 55,202+41,807+31,367+15,970+8,626+4,995 and that equals 157967$ now you have to divide that amounts by the total number of salaries so 157967 divided by 6 that equals 26327.83$
We use the fact that x2+y2=1 This is the equation of the unit circle. We know that x=-4/5, so plug this in and solve for y x2+y2=1 <span>(−4/5)^2+y2=1</span> 16/25+y2=1 y2=1−16/25 y2=9/25 <span>y=−square root of 9/ 25</span> y = -3/5
