Acar travels 30 km north in 25 min. and 40 km east in 35 min. what is the total time in hours? be careful to carry over the proper number of significant figures when you convert to hours.

t = 1.0 hours

Explanation:

as we know that all the data is given here in 2 significant figures

so here we need to find the total time of the motion

that time must be in two significant figures

here we know that

so here total time is given as

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

reserve is the answer