jake perchased a new computer for $10,000. It loses 20% of its value every year. the first year it will be worth $2000 less, the second year $1,600 less and so on. How many years will it take for the computer system to be worth $10 please help asap thanks!

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Alogical argument that is presented in graphical form using boxes and arrows is called?