4. Si el lunes Juan ha recorrido 4/5 del perímetro del estadio ¿Cuántos metros le falta para recorrer todo el perímetro? * 1 punto
500 m
89 m
128 m
460 m

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

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.