Divide 12.936 by 3.2 using the correct number of significant digits.

Jack lives on a farm and has a large backyard. the area of his rectangular backyard is of a square mile. if the width of the yard is of a mile, what fraction of a mile is the length of the rectangular backyard?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab