Why is a right equilateral triangle impossible?

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?

What point is the projection of q on a) r b) s c) t

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.