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jim_thompson5910 answered: 28586 problems
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Surface-area/628498: Use a formula to find the area. (THE TOPIC IS ABOUT AREA) 1. Mr. Cruz will build a house with a floor area of 92 square meters. If his lot is 32 meters by 25 meters, how much space will be left for his garden and backyard? Please answer immediately. Thanks in advance! 1 solutions Answer 395665 by jim_thompson5910(28598)   on 2012-07-14 22:30:07 (Show Source): You can put this solution on YOUR website! The area of the lot is 32*25 = 800 square meters His house will sit on 92 square meters of that total area. So there will be 800 - 92 = 708 square meters left for his garden and backyard. -------------------------------------------------------------------------------------------------------------- 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 --------------------------------------------------------------------------------------------------------------

Radicals/628473: This is very confusing to me and I need help, Please. Find the following. 20sqrt-2^20 1 solutions Answer 395651 by jim_thompson5910(28598)   on 2012-07-14 20:00:24 (Show Source): You can put this solution on YOUR website! Hint: where n is an even integer (ie even whole number) Ex:

Trigonometry-basics/628468: Without graphing, determine whether the function y = 7(0.28)^x represents exponential growth or exponential decay. 1 solutions Answer 395648 by jim_thompson5910(28598)   on 2012-07-14 19:41:36 (Show Source): You can put this solution on YOUR website! In general, for , if , then this represents exponential decay. Also, for , if , then this represents exponential growth. Since , this means that is true (since is true) So this function represents exponential decay. -------------------------------------------------------------------------------------------------------------- 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 --------------------------------------------------------------------------------------------------------------

Rectangles/628466: A quality control inspector found 6 defective video cassettes in a shipment of 4000 cassettes. At this rate, how many cassettes would be expected to be defective in a shipment of 10,000 cassettes? 1 solutions Answer 395647 by jim_thompson5910(28598)   on 2012-07-14 19:30:43 (Show Source): You can put this solution on YOUR website! Mean: mu = np mu = 10000*(6/4000) mu = 15 So there are 15 defective cassettes expected in the shipment.

Probability-and-statistics/628465: If boys and girls are equally likely and groups of 400 births are randomly selected. Find the standard deviation of the numbers of girls in such groups of 400. 1 solutions Answer 395645 by jim_thompson5910(28598)   on 2012-07-14 19:26:21 (Show Source): You can put this solution on YOUR website! This sounds like a binomial distribution problem. Standard deviation: sigma = sqrt(n*p*(1-p)) sigma = sqrt(400*0.5*(1-0.5)) sigma = 10 So the standard deviation is 10.

Linear_Equations_And_Systems_Word_Problems/628464: Here is my question....How would I know, in a linear story problem, that I would need to use X and Y variables or I could use only X variable? I cannot seem to grasp the relationships in the problems that would tell me to only use X or to use X and Y. And my instructor was not able to explain it either. Thank you for your help. 1 solutions Answer 395641 by jim_thompson5910(28598)   on 2012-07-14 19:07:55 (Show Source): You can put this solution on YOUR website! If you have two unknown quantities, then you would use two variables to represent them (eg: length and width). If you have one unknown quantity, then you would use one variable (eg: time) Without the actual specific problem, there's not much more I can say about it.

Distributive-associative-commutative-properties/628463: If 18 = x and x = y, then 18 = y is an example of which algebraic property? 1 solutions Answer 395639 by jim_thompson5910(28598)   on 2012-07-14 18:59:09 (Show Source): You can put this solution on YOUR website! This is an example of the transitive property.

logarithm/628462: Write logbx – logby as a single logarithm. 1 solutions Answer 395637 by jim_thompson5910(28598)   on 2012-07-14 18:51:17 (Show Source): You can put this solution on YOUR website! -------------------------------------------------------------------------------------------------------------- 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/628461: lim x --> 0 fourth root (4-2x) 1 solutions Answer 395636 by jim_thompson5910(28598)   on 2012-07-14 18:49:24 (Show Source): You can put this solution on YOUR website! Hint: Plug in x = 0 and simplify as much as you can

percentage/628460: 20% of 50 1 solutions Answer 395635 by jim_thompson5910(28598)   on 2012-07-14 18:47:28 (Show Source): You can put this solution on YOUR website! 20% of 50 = 0.20*50 = 10

Linear-equations/628457: write the slope-intercept equation for the line that passes through (-5, 10) and (-4, 3). Please show all of your work. 1 solutions Answer 395631 by jim_thompson5910(28598)   on 2012-07-14 18:28:02 (Show Source): You can put this solution on YOUR website! First let's find the slope of the line through the points and Note: is the first point . So this means that and . Also, is the second point . So this means that and . Start with the slope formula. Plug in , , , and Subtract from to get Subtract from to get Reduce So the slope of the line that goes through the points and is Now let's use the point slope formula: Start with the point slope formula Plug in , , and Rewrite as Distribute Multiply Add 10 to both sides. Combine like terms. So the equation that goes through the points and 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 --------------------------------------------------------------------------------------------------------------

Linear-equations/628454: Graph x = 4 1 solutions Answer 395629 by jim_thompson5910(28598)   on 2012-07-14 18:25:16 (Show Source): You can put this solution on YOUR website! This is the vertical line that cuts through 4 on the x-axis

Linear-equations/628456: find the slope and y-intercept of the line in the given equation. y=-1/5x-6 1 solutions Answer 395628 by jim_thompson5910(28598)   on 2012-07-14 18:24:46 (Show Source): You can put this solution on YOUR website! is in the form y = mx+b where and So the slope is and the y-intercept is (0,-6) -------------------------------------------------------------------------------------------------------------- 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/628387: simplify xy-y^2-(3xy+2y^2+y) 1 solutions Answer 395592 by jim_thompson5910(28598)   on 2012-07-14 13:52:48 (Show Source): You can put this solution on YOUR website! You already posted this question... So the answer 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 --------------------------------------------------------------------------------------------------------------

expressions/628388: Simplify xy-y^2-(3xy+2y^2+y) 1 solutions Answer 395591 by jim_thompson5910(28598)   on 2012-07-14 13:52:10 (Show Source): You can put this solution on YOUR website! So the answer 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 --------------------------------------------------------------------------------------------------------------

expressions/628385: simplify 12-1/9 / 4/3+(1/2)^2 1 solutions Answer 395590 by jim_thompson5910(28598)   on 2012-07-14 13:51:12 (Show Source): You can put this solution on YOUR website! So -------------------------------------------------------------------------------------------------------------- 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/628384: 2^(3x+5)=8^2 1 solutions Answer 395589 by jim_thompson5910(28598)   on 2012-07-14 13:45:03 (Show Source): You can put this solution on YOUR website! Since the bases are equal (to 2), the exponents are equal. So... 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/628383: What are the steps to answering this linear equation and what is the answer to 2x+14=6-4x 1 solutions Answer 395588 by jim_thompson5910(28598)   on 2012-07-14 13:44:31 (Show Source): You can put this solution on YOUR website! Start with the given equation. Subtract from both sides. Add to 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 --------------------------------------------------------------------------------------------------------------

Travel_Word_Problems/628324: at 85 mph how long would it take to travel 13 miles. 1 solutions Answer 395586 by jim_thompson5910(28598)   on 2012-07-14 13:39:02 (Show Source): You can put this solution on YOUR website! d = rt 13 = 85t 13/85 = t t = 13/85 t = 0.1529 So it will take roughly 0.1529 hours or roughly 0.1529*60 = 9.174 minutes -------------------------------------------------------------------------------------------------------------- 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/628382: 2x-3=7 1 solutions Answer 395584 by jim_thompson5910(28598)   on 2012-07-14 13:33:12 (Show Source): You can put this solution on YOUR website! Start with the given equation. Add to both sides. 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 --------------------------------------------------------------------------------------------------------------

Inequalities/628356: q+12-2(q-22)>0 1 solutions Answer 395583 by jim_thompson5910(28598)   on 2012-07-14 13:29:53 (Show Source): You can put this solution on YOUR website! Start with the given inequality. Distribute. Combine like terms on the left side. Subtract from both sides. 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 --------------------------------------------------------------------------------------------------------------

test/628374: v^2 - 4 is the product of witch two binomials 1 solutions Answer 395582 by jim_thompson5910(28598)   on 2012-07-14 13:28:32 (Show Source): You can put this solution on YOUR website! Hint: Rewrite 4 as . Then use the property that factors to

Equations/628350: 8-9(2x+4)<=-2x+13 1 solutions Answer 395581 by jim_thompson5910(28598)   on 2012-07-14 13:27:31 (Show Source): You can put this solution on YOUR website! Start with the given inequality. Distribute. Combine like terms on the left side. Add to both sides. Add to 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 --------------------------------------------------------------------------------------------------------------

Equations/628274: solve the equation -5d-24=-4(d+6)-d answers a:-5 b c:all numbers d:-24 1 solutions Answer 395522 by jim_thompson5910(28598)   on 2012-07-13 21:54:56 (Show Source): You can put this solution on YOUR website! Start with the given equation. Distribute. Combine like terms on the right side. Add to both sides. Add to both sides. Combine like terms on the left side. Combine like terms on the right side. Simplify. Since this equation is always true for any d value, this means d can equal any number. So there are an infinite number of solutions. -------------------------------------------------------------------------------------------------------------- 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 --------------------------------------------------------------------------------------------------------------

Linear-equations/628257: Write the slope - intercept equation for the line that passes through (-1,-3) and (-2,5) 1 solutions Answer 395495 by jim_thompson5910(28598)   on 2012-07-13 18:52:23 (Show Source): You can put this solution on YOUR website! First let's find the slope of the line through the points and Note: is the first point . So this means that and . Also, is the second point . So this means that and . Start with the slope formula. Plug in , , , and Subtract from to get Subtract from to get Reduce So the slope of the line that goes through the points and is Now let's use the point slope formula: Start with the point slope formula Plug in , , and Rewrite as Rewrite as Distribute Multiply Subtract 3 from both sides. Combine like terms. So the equation that goes through the points and 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/628248: Solve: -11 - (x+30) = -41 - 2(5x - 18) 1 solutions Answer 395494 by jim_thompson5910(28598)   on 2012-07-13 18:41:14 (Show Source): You can put this solution on YOUR website! Start with the given equation. Distribute. Combine like terms on the left side. Combine like terms on the right side. Add to both sides. Add to 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 --------------------------------------------------------------------------------------------------------------

Mixture_Word_Problems/628242: If the directions say to use 1/2 oz for 100 gallons, how much would you use for 1 gallon? 1 solutions Answer 395489 by jim_thompson5910(28598)   on 2012-07-13 18:20:51 (Show Source): You can put this solution on YOUR website! 1/2 oz: 100 gallons (1/2)/100 oz: 100/100 gallons (1/2)/(100/1) oz: 1 gallon (1/2)*(1/100) oz: 1 gallon 1/(2*100) oz: 1 gallon 1/200 oz: 1 gallon 1 gallon: 1/200 oz -------------------------------------------------------------------------------------------------------------- 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 --------------------------------------------------------------------------------------------------------------

Linear_Algebra/628239: solve 3-2x>15 1 solutions Answer 395485 by jim_thompson5910(28598)   on 2012-07-13 18:06:24 (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. 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 --------------------------------------------------------------------------------------------------------------

percentage/628236: Out of 420 students who took a statistics test, 310 passed. What percentage of the students passed the test. 1 solutions Answer 395484 by jim_thompson5910(28598)   on 2012-07-13 17:46:22 (Show Source): You can put this solution on YOUR website! (310/420)*100 = 73.81% of the students passed

Proportions/628233: Solve the proportion. Enter your answer in the following format: x=4.5 8/x =5/12 I need help with this can anyone help me by explaining the steps to me Please. 1 solutions Answer 395480 by jim_thompson5910(28598)   on 2012-07-13 17:26:08 (Show Source): You can put this solution on YOUR website! Start with the given equation Cross multiply Multiply Divide both sides by 5. Flip the equation. Divide. So the answer 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/628231: p-1= 5p+3-8 1 solutions Answer 395476 by jim_thompson5910(28598)   on 2012-07-13 17:01:49 (Show Source): You can put this solution on YOUR website! Start with the given equation. Combine like terms on the right side. Add to 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 --------------------------------------------------------------------------------------------------------------