Midwest Distribution Company wants to compare the relationship between employee monthly sales and the number of years the employee has spent with the company. The data for a random sample of 12 sales representatives are listed below: Monthly Sales (Y) Years (X)
4873
4455
2722
6418
1872
4406
3467
2381
3124
2692
6559
5636
Test at the 5% significance level if the slope of the regression line is positive. Interpret the results.

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?

Angles 1 and 2 are complimentary angles. angle 1 = 52 degrees. what is the measure of angle 2?