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# Recent problems solved by 'jim_thompson5910'

 Numbers_Word_Problems/555322: I need a word probelm for 75 + 108 - 62 1 solutions Answer 361735 by jim_thompson5910(33401)   on 2012-01-10 17:51:28 (Show Source): You can put this solution on YOUR website! You received a paycheck for $75 and you win$108 by playing the local lotto. You decide to play for some more money, but you end up losing \$62 trying to do so. In the end, how much money do you have left?
 Average/555317: If i got 12 out of 18 questions correct on my quiz, what was my score? 1 solutions Answer 361732 by jim_thompson5910(33401)   on 2012-01-10 17:38:37 (Show Source): You can put this solution on YOUR website! (12/18)*100 = (2/3)*100 = (0.6667)*100 = 66.67% So your score is roughly 66.67%
 Equations/555297: It is estimated that t years from now the population of a particular city will be.... P = t^2 - 24t + 96,000 How many years from now will the population be 95,865? Thanks in advance, I appreciate it! 1 solutions Answer 361729 by jim_thompson5910(33401)   on 2012-01-10 17:21:04 (Show Source): You can put this solution on YOUR website! P = t^2 - 24t + 96000 95865 = t^2 - 24t + 96000 0 = t^2 - 24t + 96000 - 95865 0 = t^2 - 24t + 135 Now use the quadratic formula to solve for t: t = (-b+-sqrt(b^2-4ac))/(2a) t = (-(-24)+-sqrt((-24)^2-4(1)(135)))/(2(1)) t = (24+-sqrt(576-(540)))/(2) t = (24+-sqrt(36))/2 t = (24+sqrt(36))/2 or t = (24-sqrt(36))/2 t = (24+6)/2 or t = (24-6)/2 t = 30/2 or t = 18/2 t = 15 or t = 9 So this means that in 15 or 9 years the population will be 95,865 Note: the population will reach 95,865 in 9 years first, dip below 95865 and then climb back up to 95,865 when t = 15 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Expressions-with-variables/555294: 6(6x-(3-4y+4x)+4y) 1 solutions Answer 361728 by jim_thompson5910(33401)   on 2012-01-10 17:14:33 (Show Source): You can put this solution on YOUR website! 6(6x-(3-4y+4x)+4y) 6(6x-3+4y-4x+4y) 36x-18+24y-24x+24y 12x+48y-18 So 6(6x-(3-4y+4x)+4y) simplifies to 12x+48y-18 In other words, 6(6x-(3-4y+4x)+4y) = 12x+48y-18 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Volume/555292: an aquarium has the dimensions 36 inches by 15 inches by 16 inches find its volumein cubic inches use the formula v=lxwh where lis the lenght w is the width and h is the height of the aquarium 1 solutions Answer 361725 by jim_thompson5910(33401)   on 2012-01-10 17:08:06 (Show Source): You can put this solution on YOUR website! V = LWH V = 36*15*16 V = 8640 So the volume of the aquarium is 8,640 cubic inches. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Circles/555290: what is the circumfrence of a 12-inch pizza 1 solutions Answer 361723 by jim_thompson5910(33401)   on 2012-01-10 17:05:36 (Show Source): You can put this solution on YOUR website! C = pi*d C = (3.14159)*(12) C = 37.69908 So the circumference is roughly 37.69908 inches. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Reduction-of-unit-multipliers/555286: How do you use a unit multiplier to convert 3.5 centimeters to meters? 1 solutions Answer 361722 by jim_thompson5910(33401)   on 2012-01-10 17:03:53 (Show Source): You can put this solution on YOUR website! Method #1: Multiply 3.5 cm by (1 m/100 cm) to get (3.5 cm)*(1 m/100 cm) = 3.5/100 m = 0.035 m ------------------------------------------------------- Method #2: 100 cm = 1 m 1 cm = 1/100 m 1 cm = 0.01 m 3.5*1 cm = 3.5*0.01 m 3.5 cm = 0.035 m which is the same answer. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Distributive-associative-commutative-properties/555283: (3x-2y)^2 1 solutions Answer 361721 by jim_thompson5910(33401)   on 2012-01-10 16:58:42 (Show Source): You can put this solution on YOUR website! Start with the given expression. Expand. Remember something like . Now let's FOIL the expression. Remember, when you FOIL an expression, you follow this procedure: Multiply the First terms:. Multiply the Outer terms:. Multiply the Inner terms:. Multiply the Last terms:. --------------------------------------------------- So we have the terms: , , , Now add every term listed above to make a single expression. Now combine like terms. So FOILs to . In other words, . If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Travel_Word_Problems/555279: If you go 150 km in 2 hours, what is your average speed? 1 solutions Answer 361719 by jim_thompson5910(33401)   on 2012-01-10 16:55:38 (Show Source): You can put this solution on YOUR website! Start with the distance-rate-time formula. Plug in and . Divide both sides by 2 to isolate 'r'. Divide to get . Rearrange the equation. So the average speed is 75 kilometers per hour. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Probability-and-statistics/555278: I have exams this week and there are some things I am not sure what to do for my algebra class I have never been good at probability for example Eight cards are marked from 1 through 8. What is the Probability of drawing 2 or an odd number? 1 solutions Answer 361718 by jim_thompson5910(33401)   on 2012-01-10 16:54:27 (Show Source): You can put this solution on YOUR website! P(drawing 2) = 1/8 P(drawing an odd number) = (# of odd numbers)/(# of total numbers) = 4/8 = 1/2 ------------------------ P(drawing 2 or drawing odd number) = P(drawing 2) + P(drawing an odd number) P(drawing 2 or drawing odd number) = 1/8 + 1/2 P(drawing 2 or drawing odd number) = 1/8 + 4/8 P(drawing 2 or drawing odd number) = 5/8 So the answer is 5/8 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Finite-and-infinite-sets/555263: 26th term: 3,8,13,18 1 solutions Answer 361713 by jim_thompson5910(33401)   on 2012-01-10 16:47:12 (Show Source): You can put this solution on YOUR website! Hint: 8 - 3 = 5, 13-8 = 5, 18-13 = 5. So you're adding 5 to each term.
 test/555276: I just started algebra 1 at my local community college I'm 20 years old and haven't had an algebra class in 3 or 4 years I remember I used to love it I scored a 24 in the math section on the act I just need someone to help me with the first 4 sections to get back in the groove of things I think if I get a little help it'll start coming back to me any help as soon as possible would help. 1 solutions Answer 361712 by jim_thompson5910(33401)   on 2012-01-10 16:46:04 (Show Source): You can put this solution on YOUR website! Post any questions you have on this site or email me any questions you have. You can email me at jim_thompson5910@hotmail.com
 expressions/555275: simplify -5^2 1 solutions Answer 361711 by jim_thompson5910(33401)   on 2012-01-10 16:44:37 (Show Source): You can put this solution on YOUR website! -5^2 = -1*5^2 = -1*5*5 = -1*25 = -25 So -5^2 = -25 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Equations/555271: -x+7=2x-5 1 solutions Answer 361710 by jim_thompson5910(33401)   on 2012-01-10 16:41:24 (Show Source): You can put this solution on YOUR website! Start with the given equation. Subtract from both sides. Subtract from both sides. Combine like terms on the left side. Combine like terms on the right side. Divide both sides by to isolate . Reduce. ---------------------------------------------------------------------- Answer: So the solution is If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Evaluation_Word_Problems/555266: Please help solv. A digital photgraph is 30 pixel longer than it is wide and has a total area of 4000 pixels. Find the dimensions of this photograph. 1 solutions Answer 361709 by jim_thompson5910(33401)   on 2012-01-10 16:40:46 (Show Source): You can put this solution on YOUR website! x(x+30)=4000 x^2+30x=4000 x^2+30x-4000=0 Now use the quadratic formula to solve: x = (-b+-sqrt(b^2-4ac))/(2a) x = (-(30)+-sqrt((30)^2-4(1)(-4000)))/(2(1)) x = (-30+-sqrt(900-(-16000)))/(2) x = (-30+-sqrt(16900))/2 x = (-30+sqrt(16900))/2 or x = (-30-sqrt(16900))/2 x = (-30+130)/2 or x = (-30-130)/2 x = 100/2 or x = -160/2 x = 50 or x = -80 Ignore the negative solution. So the dimensions are 50 by 80 pixels. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Travel_Word_Problems/555252: How many hours would it take to travel 700 kilometers if you are driving at a speed of 120 kilometers per hour? 1 solutions Answer 361700 by jim_thompson5910(33401)   on 2012-01-10 16:06:33 (Show Source): You can put this solution on YOUR website! Start with the distance-rate-time formula. Plug in and . Divide both sides by 120 to isolate 't'. Divide to get . Rearrange the equation. So it will take hours to go km traveling at kph. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Trigonometry-basics/555246: 16^(2x+3)=64^(x+2) Can you show me how to do the problem, not just the answer? 1 solutions Answer 361698 by jim_thompson5910(33401)   on 2012-01-10 16:02:12 (Show Source): You can put this solution on YOUR website! 16^(2x+3)=64^(x+2) (4^2)^(2x+3)=(4^3)^(x+2) 4^(2(2x+3))=4^(3(x+2)) Since the bases are equal, the exponents are equal. 2(2x+3)=3(x+2) 4x+6=3x+6 4x=3x+6-6 4x-3x=6-6 x=6-6 x=0 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Equations/555243: simplify: 256/(-16)/4 1 solutions Answer 361697 by jim_thompson5910(33401)   on 2012-01-10 15:57:46 (Show Source): You can put this solution on YOUR website! 256/(-16)/4 -16/4 -4 So 256/(-16)/4 = -4 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Travel_Word_Problems/555236: rowena rides 4 miles across town.How many feet does she ride? 1 solutions Answer 361696 by jim_thompson5910(33401)   on 2012-01-10 15:54:42 (Show Source): You can put this solution on YOUR website! 1 mile = 5280 ft 4*1 mile = 4*5280 ft 4 miles = 21120 ft So she rode 21,120 ft If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Permutations/555238: how many ways to arrange 7 books on a shelf when there are only 5 places on it? 1 solutions Answer 361695 by jim_thompson5910(33401)   on 2012-01-10 15:52:21 (Show Source): You can put this solution on YOUR website! P(n,r) = (n!)/((n-r)!) P(7,5) = (7!)/((7-5)!) P(7,5) = (7!)/(2!) P(7,5) = (7*6*5*4*3*2!)/(2!) P(7,5) = 7*6*5*4*3 P(7,5) = 2520 So there are 2,520 ways. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Equations/555229: x+negative 15=3 1 solutions Answer 361693 by jim_thompson5910(33401)   on 2012-01-10 15:49:41 (Show Source): You can put this solution on YOUR website! x+(-15) = 3 x-15 = 3 x-15+15 = 3+15 x = 18 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Numeric_Fractions/555223: what is the answer to this fraction problem please. what is 1/3 of 9 1 solutions Answer 361692 by jim_thompson5910(33401)   on 2012-01-10 15:43:08 (Show Source): You can put this solution on YOUR website! 1/3 of 9 = (1/3)*(9) = (1*9)/3 = 9/3 = 3 So 1/3 of 9 is 3. If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Inequalities/555226: help on x+6<3x-10 1 solutions Answer 361691 by jim_thompson5910(33401)   on 2012-01-10 15:41:30 (Show Source): You can put this solution on YOUR website! Start with the given inequality. Subtract from both sides. Subtract from both sides. Combine like terms on the left side. Combine like terms on the right side. Divide both sides by to isolate . note: Remember, the inequality sign flips when we divide both sides by a negative number. Reduce. ---------------------------------------------------------------------- Answer: So the solution is If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Average/555225: find average of 7,9,13,18,4,2,1,6,8,12,15,24,36,81 1 solutions Answer 361690 by jim_thompson5910(33401)   on 2012-01-10 15:40:56 (Show Source): You can put this solution on YOUR website! Mean = (Sum of the values)/(Number of values) Mean = (7+9+13+18+4+2+1+6+8+12+15+24+36+81)/14 Mean = 236/14 Mean = 16.8571428571429 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Word_Problems_With_Coins/555217: I have 46cents. I have 7 coins. Which coins do I have? 1 solutions Answer 361687 by jim_thompson5910(33401)   on 2012-01-10 15:23:46 (Show Source): You can put this solution on YOUR website! You at least have one penny (since it's the smallest denomination to get that 6 in the units digit) So 6 coins must add to 46-1 = 45 cents It turns out that 3 nickels and 3 dimes (3+3 = 6 coins) do the trick nicely. You can find this by trial and error. So you have 1 penny, 3 nickels, and 3 dimes If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Inequalities/555215: n+8 < -7 1 solutions Answer 361684 by jim_thompson5910(33401)   on 2012-01-10 15:15:00 (Show Source): You can put this solution on YOUR website! Start with the given inequality. Subtract from both sides. Combine like terms on the right side. ---------------------------------------------------------------------- Answer: So the solution is If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim
 Equations/555173: How do I solve this problem? 3(x-5) +1 = 1/4(2x -8) 1 solutions Answer 361682 by jim_thompson5910(33401)   on 2012-01-10 15:11:38 (Show Source): You can put this solution on YOUR website! 3(x-5) +1 = 1/4(2x -8) 12(x-5) +4 = 1(2x -8) 12x-60+4=2x-8 12x-56=2x-8 12x=2x-8+56 12x-2x=-8+56 10x=-8+56 10x=48 x=48/10 x=24/5 If you need more help, email me at jim_thompson5910@hotmail.com Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you Jim