A man at the top of a watchtower knows that his eye is 86 ft. above the ground. On the level plateau supporting the tower, there is a rock known to be 500 ft. from the base of the tower. Find the measure of the angle of depression of the rock from the top of the tower.

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.