Name the triangle congruent to ΔABC

ΔABC≅Δ

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?