some 7th grade math questions>Ex:How many laps must a person run around a quarter-mile track to run 91/2 mi.
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a) 9 1/2 divided by 1/4 = 38 laps\n\nb) A three digit number is composed of "x" in the hundreds column, "y" in the tens, and "z" in the ones...i.e. x,y,z.  To maximize this number, we need "x" to be a "9".  Then, 9 needs to equal the sum of the other two.  So, 5/4, 6/3, 8/1 etc.  So, an 8 needs to be in the tens, and 1 in the ones.\n\n981 is the largest balanced number.\n\nc) a * b * c * d = 270.  We know that c is greater than d.  We know that a + b + c + d = 21.\n\nNone of the digits can be 0 since that would make the product 0\nWe know the first two digits are "1" and "9"\n\nTherefore:\n\n1 * 9 * c * d = 270\nc * d = 30\n\nWhat two numbers will make thirty?  6 / 5 \nTens is larger, so 1965.\n\nCheck: 1 + 9 + 6 + 5 = 21\n1 x 9 x 6 x 5 = 270\n\nd) Greatest common factor of 19 and 27.  Factors of 19 are 19 and 1. Factors of 27 are 1,3,9, and 27.  \n\n(There are 9 supreme court justices, so did you mean GCF of *18* and 27???)\n\ne) I answered this first since it was your subject line...answer a.\n\n\nf) Area = 32 sq inches / 8 surfaces = 4 square inches per face.
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15 year old girl (freshmen)\n5:41, but i'm a sprinter that was forced to run it lol so i'm hoping to improve it next year when i switch to distance
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Two miles?! I would think it would be good enough. Geez! Maybe you should talk to your P.E. teacher or princable because 10:35 is GREAT!!
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To all those who answered 90 mph - BE MORE CAREFUL!\n\nMath Teacher
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12 miles per hour\n\nIf you run 1 mile in 5 minutes means you have to run .2 miles per minute.   (.2 miles per min X 5 min = 1 mile)\n\nIf you run .2 miles per minute for 60 minutes you would have run 12 miles. (.2 mpm X 60 minutes = 12mph)
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x = total hits\ndoubles = 1/7 of x, or x/7\nhome runs = 12.5% of x or 0.125x\nsingles = 82\n\nx = x/7 + 0.125x + 82\nmultiply both sides by 7\n7x = x + 0.875x + 574\nsubtract x from both sides\n6x = 0.875x + 574\nsubtract 0.875x from both sides\n5.125x = 574\ndivide both sides by 5.125\nx = 112\n\nthe kid had 112 hits
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0.189 miles which comes out to 189/1000ths of a mile\n\nOr about 2 tenths.\n\nYou see a mile consists of 5280 feet so to find your answer you divide the given 1000 feet by 5280 (because feet divided by feet per mile gives the unit of mile) to get the answer.
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This type of problem is solved by finding the fraction of the job each, then both, can do in an hour.  If t = the hours for the faster person, she can do 1/t of the job in an hour, the slower can do 1/(t+2) of the job, and together they do 1/5 of the job in an hour.\n\nSo 1/t + 1/(t+2) = 1/5
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Without really going into formulae and calculations one can say that the answer for the first question is - a little less than one minute. For the second question - a little less than 60miles an hour.
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You have everything you need to answer your own questions except for maybe a middle school level knowledge of math.  Plug in the number for c!
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There's no such thing as "track field," per se, but I imagine that you are talking about a standard track which encircles a football field.  Those are usually 1/4 mile per lap, so you would've run 1 1/4 miles.
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1) 337/13.7 = 24.6 miles per gallon\n\n2) x=7\n\n3) (-8)(10)=-80\n\n4) 4-2x-9+3x = x-5\n\n5) 3n+4=-11\n     n=-5
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35.8 mi/hr * (1hr/60min) * (1min/60sec) * (5280ft/1mi) * (12in/1ft) * (2.54cm/1in) * (1m/100cm) = your answer\n\nnotice in each fraction... the top is actually equal to the bottom, but in different units... so you can put whichever one you need on the top or bottom, either way it equals 1... so you just manipulate them based on what you start with and what you need.  i started by converted the hour to seconds, then followed by converting the miles to meters.\n\nI don't remember the other conversions, but you should have them in your text cover and just follow the same method.  Hope this helped.
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Here is how I remember this. I used to run track and one event is called the 440. That is a quarter mile and it is 440 yards in a qaurter mile. Multiply that by 4 and you get how many yards in a mile, 1760. Multiply the 1760 by 3 (because there are 3 feet in a yard) and you get how many feet in a mile, 5280.
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becareful. I knew a girl that ran 2:15 in the 6th grade... Never got any faster... don't burn her out
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The distance travel is going to be 1/2 mile.   How far away are you are from the beginining of the first 1/4 mile could vary depending on how straight of a line you traveled and which angle you turned once you stopped but the maxium distance can not be greater than 1/2 mile (perfectly striaght line).  So C and D can not be correct.  A and B can be correct.  Being a perfectly straight road is not very possible then A is correct.  But if this is for your math class then most likely B is what the teacher is looking for.
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If the one acre lot is square, it is about 208 feet on each side. So one lap would cover 832 feet. There are 5280 feet in one mile, so if you did 6.34 laps you would have covered about one mile. If you walk a few feet on the inside of the lot lines, and you cut off a few feet at each corner, then call it 7 laps to make a full mile! What are you waiting for, you have no excuse now, so get going :)