Triangle abc is similar to triangle def . the length of ac¯¯¯¯¯ is 12 cm. the length of bc¯¯¯¯¯ is 18 cm. the length of df¯¯¯¯¯ is 10 cm. what is the length of ef¯¯¯¯¯? enter your answer in the box.

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

You spin the spinner shown below once. each sector shown has an equal area. what is p(beaver ) p(beaver)? if necessary, round your answer to 2 2 decimal places.

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.