7th grade math help !!!?
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1.  If it costs 10 c/min to call within the area code, and he made a 1 hr call in the area code, it cost (60 min)*(10 c/min) = 600 c = $6.  That means he has $25 - $6 = $19 left on the card.  Long distance calls cost 20 c/min.  With $19, he can call long distance for (1900 c) / (20 c/min) = 95 min.  That's 1 hr, 35 min.\n\n2.  The total cost of the calls would be (60 min)*(10 c/min) + (120 min)*(20 c/min) = 600 c + 2400 c = 3000 c = $30.
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several classes (100 students)of 6th graders went on a field trip to the zoo. 1/5 of them went to c the monkeys. 1/2 of them visited the penguins. 1/4 went 2 c the bats. and the rest went to the snack bar. how many students went to the snack bar? if u hav a heart. u will help \n\nwell...i got 5 students went to the snack bar...\n1/5 of 100=20\n1/2 of 100=50\n1/4 of 100=25\nso \n  20+50+25=95\n  100-95=5 students\n~Brendon
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Here are some sites that might help:\n\nhttp://www.math.com/index.aspx\n\nThis one has lots of other links:\nhttp://www.sosmath.com/wwwsites.html
429835
ok, u have to use distance formula\n\nsqrt[(-4-(-7))^2+(c-7)^2]=5   \nsquare both sides\n[(-4-(-7))^2+(c-7)^2]=25      \nadd the stuff in the parentesies\n[(-3)^2+(c-7)^2]=25           \nexponents\n9+(c-7)^2=25                  \nsubtract from both sides\n(c-7)^2=16                    \nsquare root both sides\nc-7= +/-4                     \nadd to both sides\nc=11 or c=3
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goto purple math.com it will hopefully help you
1127430
try this one http://www.algebrahelp.com/
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http://www.aaamath.com/ There you go!! Hope that helps.
859713
You should go to www.AAAMath.com  good luck
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(4)/(x+7) + (x+3)/(x+7)\n=(4 + (x+3))/(x+7)\n=(4 + x + 3)/(x+7)\n=( x +7)/(x+7)\n=1
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x=3y+7\nx=3(0)+7\nx=7\nHope this helps! ^^\nalso the y intercept is like this:\nx=3y+7\n0=3y+7\n-7=3y\n-2.23333...=y
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all you need to do is go to www.webmath.com, it'll help u there!\n\nI always do my math problems to that site if ever i get stuck on something! It's helpful!
932643
4x + 7 = -7\n4x = 14\nx = 14/4\nx = 7/2
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(2x)/7 = (x-1)/3  Multiply both sides by 21\n\n6x = 7x –7 (-7x from both sides)\n\n-x = -7\n\nx = 7
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do the math moron!!!!!!
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Relax\n\n1)) (5x + 7) + (x - 2) = 5x + 7 + x - 2 = 5x + x + 7 - 2 = 6x + 5\n\n2)) 2 X length + 2 X height = perimeter\n\n  (2 X x) + (2 X (x - 3)) = per = 2x + (2x - 6) = cir = 2x + 2x - 6\n\n  perimeter = 4x - 6,   or 2 ( 2x - 3)\n\n3)) same as # 2;\n\n  2 X (t + 5) + 2 X 2t = 2t + 10 + 4t = 2t + 4t + 10 = 6t + 10 = per\n\n4)) (t - 5) - (3t - 1) = t - 5 - 3t + 1 = t - 3t - 5 + 1 = -2t -4\n\n  or -2 (t + 2)
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by any chance is this a question from your maths homework? lol :D\n\nI cant work it out myself because to put it simple, im crap at maths.
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Add them... 8+7+7+5+3+2+2= 34 and divided by 7\nYyou have 34/7=\nYou know 4x7= 28 so you need 6 more to reach 34\nso you have 4 and 6/7