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# Recent problems solved by 'MCAT'

MCAT answered: 6 problems
 Square-cubic-other-roots/394734: How do I cube (3 minus square root of 7)?1 solutions Answer 280060 by MCAT(6)   on 2011-01-14 12:08:59 (Show Source): You can put this solution on YOUR website!√7=2.65, 2.65-3=-0.35, -0.35^3=-0.04
 Permutations/394730: There are 5 groups (A,B,C,D,E)and in each group there are 4 teams. Each team in a group will play against the other team only once. how many games will each group play? How many games are played total?1 solutions Answer 280058 by MCAT(6)   on 2011-01-14 11:55:40 (Show Source): You can put this solution on YOUR website!In each group there are 4 teams; team 1,2,3 and 4. Group no 1: 1 vs. 2 1 vs. 3 1 vs. 4 2 vs. 3 2 vs. 4 3 vs. 4 As you can see 6 games will be played per group. 6(the amount of games played in each group)x5(the amount of groups)=30(the amount of games played in total) Therefore, each group will play 6 games and there will be 30 games played in total.
 Travel_Word_Problems/388842: two helicopters take off at the same time from the same airport and travel in opposite directions. The northbound aircraft travels at 350 km/h and the southbound aircraft is 25 km/h slower. In how many hours will the two helicopters be 2025 km apart?1 solutions Answer 275244 by MCAT(6)   on 2010-12-26 15:09:51 (Show Source): You can put this solution on YOUR website! Time Northbound Helicopeter Southbound Helicopter Total Distance apart (distance from the airport):(distance from the airport): (from each other) Hour 1:------350km----------------------------325km-----------------675km Hour 2:------700km-----------------------------650km----------------1350km Hour 3:------1050km----------------------------975km----------------2025km Therefore, they will be 2025km apart in three hours! Note: Ignore the dashes, they're supposed to be blank spances, without them, this wouldn't look like a chart.
 Pythagorean-theorem/388314: Find height of tree using pie pan and ruler?1 solutions Answer 274868 by MCAT(6)   on 2010-12-22 17:02:56 (Show Source): You can put this solution on YOUR website!Measure the pan's diameter, find out the height of the tree (by measuring) in pans (the amount of pans the height of the tree is equivilant to). Then convert this into inches, feet, yards, whatever your ruler used as a measurement knowing the diameter of the pan.
 Length-and-distance/198306: Can somebody help me please? The problem states that a company had sales of \$500,000 in 1996 and sales of \$720,000 in 1998. Use the midpoint formula to find the company's sales in 1997. I will appreciate if you can help me.1 solutions Answer 274864 by MCAT(6)   on 2010-12-22 16:51:23 (Show Source): You can put this solution on YOUR website! The question is asking you to basically find the mean of the data: Mean=(Data 1+ Data 2)/(divided)Number of data Our data here are \$500,000 and \$720,000, so here is the equation: Company's sales in 1997(mean)=(\$500,000+\$720,000)/2 =\$1,220,000/2 =\$610,000 Therefore, the company's sales in 1997 were worth \$610,000 (estimation)
 Rational-functions/388418: A company had sales of \$500,000 in 1996 and sales of \$720,000 in 1998. Use the midpoint formula to find the company's sales in 1997. 1 solutions Answer 274863 by MCAT(6)   on 2010-12-22 16:49:53 (Show Source): You can put this solution on YOUR website! The question is asking you to basically find the mean of the data: Mean=(Data 1+ Data 2)/(divided)Number of data Our data here are \$500,000 and \$720,000, so here is the equation: Company's sales in 1997(mean)=(\$500,000+\$720,000)/2 =\$1,220,000/2 =\$610,000 Therefore, the company's sales in 1997 were worth \$610,000 (estimation)