Which of the following substances would you predict to have the highest δhvap?.

The distance d that a car can travel in a certain amount of time t can be found by multiplying the rate of speed r by the travel time. if a car has already travel 4 miles, the formula for the total distance travel is d= rt + 4. which of the following gives the value of r, in terms of d and t?

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

Land is to arable ; river is a, navigable b, shallow c, presumsor d, water