The access code for a car's security system consists of four digits. the first digit cannot be zero or one and the last digit must be even. how many different codes are available?

(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 ?

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?