The mean of the following numbers is 15. 14,10,18,,21,15,14

(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 ?

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Which number line represents the solution set for the inequality - x 24?