What is 84/1000, 31564/1000, 1176/100, and 876/1000 all as a decimal?

Which statement justifies why angle ebc measures 90?

Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $40.00, how much money is angela saving on the dress? a. $0.80 b. $3.20 c. $32.00 d. $8.00

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab