Which set of measurements determines a unique triangle? a 13ft, 17ft, 20ft

b 4in, 7in, 20in

c 30 degree, 70 degree, 80 degree

d 90 degree, 70 degree, 40 degree

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?

Which inequality has a dashed boundary line when graphed ?

Which expression is rational? 6. , square root two, square root 14, square root 49