Act 3 of the 2003 Leonid meteor shower was expected to last 24 hours. The margin of error for this prediction was 0.7 days. Set up and solve an absolute value equation to find the limits of the range for the length of time that Act 3 could last.​

The perimeter of ? cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.