Allen is building birdhouses that require 1/2ft long boards. how many prices that are exactly 1/2 ft long can be made from a board that is 8 1/4 long?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

Mrs.sling bought a pound of green beans for $1.80. how much will mrs.tennison pay for 3 1/2 pounds of green beans?