A sweatshirt at the store is being offered at a 20% discount. if the original price of the sweatshirt is x, which answer choice shows an expression that represents the discounted price of the sweatshirt.

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

Does the point (1, sqrt 7) lie on circle shown.

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.