Marguerite is building a box from strips of wood. she needs 78 pieces of wood that are each 29 centimeters long. the wood comes in boards that are 6 meters long. how many boards will she need ?

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expressions 4s +9s represents the total number of items that will be displayed on s shelves. simplify this expression

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?