Total # Posts: 5
a closed rectangular box whose base is twice as long as it is wide has a volume of 36000 cm^3.the material for the top cost 10 centavo per sq cm,that for the sides and bottom cost 5 centavos per sq cm.find the dimensions that will make the cost of making the box a minimum
January 31, 2016
fractions and division
Several friends are taking turns flying a kite. Each friend flies the kite for the same amount of time. They spend six hours flying the kite altogether. Explain what information you need to find how long each friend flew the kite.
April 18, 2012
I have a triangle in a coordinate system(not native english) i have these three points. A: 4,-2 B:-2,-1 C: 4,3 How do i get the height of it in relation BC? And, how do i calculate the total area of the triangle? Made this atm: AB: ((-2)-4)/((-1)-2) = 2; y-2=2(x-1) y = 2*x; BC...
November 23, 2011