What is the best estimate of the weight of the carbon-14 sample after 19,000 years ?

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.