"The cars' keys are there."
Translation:Las llaves de los coches están allí.
"las" llaves and "los" coches threw me off. Why do llaves and coches have different articles when their endings are the same?
JimHazlitt Estar is used when you are specifying a location. I use P.L.A.C.E (Position - Location - Action - Condition (this is what people mean by temporary) - Emotion).
Too idomatic for this application using terms that have not been presented. That is a poor teaching protocol.
The exercise says "The cars' keys" so it is a plural possessive. Multiple keys belonging to multiple cars.