You deposit $2700 in an account earning 4% interest compounded semiannually. How long will it take this investment to double? Round your answer to two decimal places. Use this compound
interest formula:
nt
A = P(1+ r/n)

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

The surface area of the triangular prism is .

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?