15/8 is less than or equal to 5/2 times s

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.

Yasmin purchased 6 heads of cabbage that each weighed 2 3/8 pounds how much did the cabbage way all together

Hello everyone i need someone me with a explanation i need to get a a