Mark has, in his kitchen, the ingredients needed to prepare 78 different recipes with two ingredients each. Of those 78 different recipes, there are no two recipes that share the exact same two ingredients.
How many ingredients does he have?

What is the quotient of -3/8and-1/3?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

We have enough material to build a fence around a station that has a perimeter of 180 feet the width of the rectangular space must be 3 1/4 feet what must the length be