The radio station kork is a conducting a telephone survey. the survey is conducted by selecting 4 pages at random from the telephone book and then interviewing every person on each of the selected pages. this is an example of which of the following sampling techniques?

Which statement justifies why angle ebc measures 90?

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap

Last week jason walked 3 1/4 miles each day for 3 days and 4 5/8 miles each day for 4 days. about how many miles did jason walk last week?