Jamie says the value of the expression 1.43 × (− 21 41 ) is close to −0.75. Does Jamie's estimate seem reasonable? Explain. Jamie's estimate reasonable. The product of the expression is and about half of .

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

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

How can you find the mean absolute deviation (mad) for this set of data?