An adult takes 400 mg of ibuprofen. Each hour the body removes 30% of the medicine. How much ibuprofen is left after 6 hours

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.

Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.