A proof question. help please:)

The tickmarks are visual indicators telling that the segments are the same length.

The single tickmark segments RM and DE are the same length. The double tickmark segments RE and MD are the same length. There isn't enough information to be able to say if RM = MD is true or not.

The third set of sides that are the same length are EM and EM. It is possible to use a segment twice. In reality we can break up the figure to get two triangles. We can say that EM = EM by the reflexive property.

We have three pairs of congruent sides, so we end up using the SSS (side side side) congruence theorem.

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles