Explain how you know which coins could be used to show 0.77 of a dollar

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?

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.