It takes an average of 40 seconds to download a certain file, with a standard deviation of
5 seconds. the actual distribution of the download time is unknown. using chebyshev’s
inequality, what can be said about the probability of spending more than 1 minute for this
download?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

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

Ashley spent half of her lunch money on a turkey sandwich. then she spent two-thirds of the money she had left on a bottle of juice and the rest of the money on a cookie. if the cookie cost $.75, how much lunch money did ashley have to start with?