Evaluate the expression. use scientific notation to express your answer 4.8x10-8/3x10-3

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

If the value of cos330°is√3/2 then find cos 165°.

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n