One pipe can fill a tank in 4 hours and another pipe can fill the tank in 6 hours. how long will it take if both pipes are used?

What is the quotient of 42/3 divided by 4 1/5

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

Asap i need it now choose all the answers that apply. sex-linked disorders affect males more than females affect females more than males can be carried by females, without being expressed are always expressed in males are caused by genes carried on the x and y chromosomes