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two bullet trains leave a station at the same time. One train is travelling north at 20 miles faster then one headed south. In 5 hours the two trains will be 2013 miles apart. How fast are they going...

A math teacher announces that grades will be calculated by adding 65% of a student's homework score, 15% of a student's quiz score, and 20% of the student's final exam score.

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If you expect 600 people to buy tickets to a hip hop concert.The box office opens 30 minutes before the show.  How many ticket sellers do you need in order to sell all 600 tickets in 30 minutes...

I've been trying to find this out for awhile and just keep messing up somewhere. Any help, please? She is alloted the \$80, by the way. I had too many character to have it in.

a school system is buying new computers. They buy desktop computers costing \$1000 per unit, and notebook computers costing \$1200 per unit. the total cost of the computers cannot exceed \$80,000. write...

i have 15 pounds of organic almonds, which cost \$13.50 per pound, i want to mix the almonds with organic cashews, which cost \$10.50 per pound, to create a mixture worth \$12.50 per pound. how many...

What is the radius of a rhodium atom in angstroms (A)? Express answering using two significant figures.   What is the radius of a rhodium atom in meters (m)? Express you answer...