Write the number in scientific notation.
21,700
a. 0.217 x 105
b. 21.7 x 103
c.
2.17 x 104

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

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