What is 0.2 rounded to 2 decimal places

How many zeros does the function f(x)=4x3-x2+1 have

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

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart