Eva is jumping on a trampoline. Her height is h at time t can be modeled by the equation h=-16t^2+20t+6. Would Eva reach a height of 14 feet?

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.