If m∠8 = 4x + 9 and m∠2 = 8x + 12, what is the m∠4?

(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 ?

Select the sequences that are geometric.

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days