Derrick and Sam need 10 pounds of colored gravel for the bottom of their new fish tank. Derrick has 2 pounds of purple gravel and 4 pounds of blue gravel. How much yellow gravel does Sam need to buy?

Math question what is the difference of 92 and 98

What the distance between - 45 and - 98

You can mow your lawn in 2 hours. Your friend can mow your lawn in 3 hours. How long will it take to mow your lawn if the two of you work together?

In a town, there are 170 teenagers that own portable media players. This at least 2/3 of all teenagers in the town. What is the maximum teenagers who live in the town?

the price of a guiter was decreased by 15% and sold for 275.99. what was the orignal price of the guiter in dollers?

Parse the regular hexagon, and tell how much regular unit triangle do you find, if the length of one side of the regular hexagon is n unit (s) :

What is the number rounded to the nearest tenth of 15.839

What is not equivalent to 36/72

What is the percent of change in $60 to $80

Express answer in exact form. Show all work for full credit. Find the area of one segment formed by a square with sides of 6" inscribed in a circle. (Hint: use the ratio of 1:1: squared 2 to find the radius of the circle.)