Algebra ->  Tutoring on algebra.com -> See tutors' answers!      Log On

 Tutoring Home For Students Tools for Tutors Our Tutors Register Recently Solved
 By Tutor
| By Problem Number |

Tutor:

Recent problems solved by 'nyc_function'

Jump to solutions: 0..29 , 30..59 , 60..89 , 90..119 , 120..149 , 150..179 , 180..209 , 210..239 , 240..269 , 270..299 , 300..329 , 330..359 , 360..389 , 390..419 , 420..449 , 450..479 , 480..509 , 510..539 , 540..569 , 570..599 , 600..629 , 630..659 , 660..689 , 690..719 , 720..749 , 750..779 , 780..809 , 810..839 , 840..869 , 870..899 , 900..929 , 930..959 , 960..989 , 990..1019 , 1020..1049 , 1050..1079 , 1080..1109 , 1110..1139 , 1140..1169 , 1170..1199 , 1200..1229 , 1230..1259 , 1260..1289 , 1290..1319 , 1320..1349 , 1350..1379 , 1380..1409 , 1410..1439 , 1440..1469 , 1470..1499 , 1500..1529 , 1530..1559 , 1560..1589 , 1590..1619 , 1620..1649 , 1650..1679 , 1680..1709 , 1710..1739 , 1740..1769 , 1770..1799 , 1800..1829 , 1830..1859 , 1860..1889 , 1890..1919 , 1920..1949 , 1950..1979 , 1980..2009 , 2010..2039 , 2040..2069 , 2070..2099 , 2100..2129 , 2130..2159 , 2160..2189 , 2190..2219 , 2220..2249 , 2250..2279 , 2280..2309 , 2310..2339 , 2340..2369 , 2370..2399 , 2400..2429 , 2430..2459 , 2460..2489 , 2490..2519 , 2520..2549 , 2550..2579 , 2580..2609 , 2610..2639 , 2640..2669 , 2670..2699 , 2700..2729, >>Next

 percentage/235885: Is 33(1/3)% equal to (1/3) of the value?1 solutions Answer 173665 by nyc_function(2733)   on 2009-11-06 10:40:44 (Show Source): You can put this solution on YOUR website!33_1/3 = 33.33 1/3 = 0.33 Are they the same? You tell me.
 Rational-functions/235883: Solve 4/n - 1/2 = -6/3n.1 solutions Answer 173664 by nyc_function(2733)   on 2009-11-06 10:37:50 (Show Source): You can put this solution on YOUR website!Solve 4/n - 1/2 = -6/3n. Multiply each fraction by 6n. This is done to remove the fractions. After doing the math, we get 24 - 3n = -12. We now solve for n. -3n = -12 - 24 -2n = -36 n = -36/-2 n = 18
 Geometry_proofs/235903: EG=13, ef=31 solutions Answer 173663 by nyc_function(2733)   on 2009-11-06 10:34:03 (Show Source): You can put this solution on YOUR website!This question is incomplete. Where's the rest of the question?
 Exponents/235905: simplify 12a(to the 5th)/6a1 solutions Answer 173662 by nyc_function(2733)   on 2009-11-06 10:33:11 (Show Source): You can put this solution on YOUR website!12a^5/6a Just divide the top by the bottom. 12/6 = 2 a^5/a = a^4 Final answer: 2a^4
 expressions/235896: Multiply as indicated: Please show work so i know how to do more. (2x-3)(3x-2)1 solutions Answer 173661 by nyc_function(2733)   on 2009-11-06 10:30:26 (Show Source): You can put this solution on YOUR website!(2x-3)(3x-2) Just multiply using FOIL. 2x times 3x = 3x^2 2x times -2 = -4x -3 times 3x = -9x -3 times -2 = 6 We now have 3x^2 - 4x - 9x + 6. Combine like terms and you're done. Final answer: 3x^2 - 13x + 6
 Linear-systems/235894: Please can you help me solve x=-2y? I will then need to graph it.1 solutions Answer 173659 by nyc_function(2733)   on 2009-11-06 10:23:24 (Show Source): You can put this solution on YOUR website!x = -2y This is a linear function. All you need is two points to graph it. Linear functions make straight lines. The word linear means line. There are many ways to find points. Let x = 0 0 = -2y 0/-2 = y 0 = y One point to graph is (0,0). This particular point is called the origin. It's where the x and y axis meet. Solving for y, we get the equation y = x/-2. If we let x = 2, y = -1. This makes the point (0, -1). Plot these two points on the xy-plane and connect the points with a straight line going from quadrant 2 down through the origin into quadrant 4.
 Quadratic_Equations/235891: For a quadratic function, how do you find the x-intercept(s)1 solutions Answer 173656 by nyc_function(2733)   on 2009-11-06 10:06:57 (Show Source): You can put this solution on YOUR website!To find the y-intercept, set x = 0 and solve for y. To find the x-intercept, set y = 0 and solve for x. Sample: Given the function f(x) = -2x^2 - 5x + 4, find the intercepts. Let x = 0 and solve for y. f(0) = -2(0)^2 - 5(0) + 4 f(0) = 0 + 0 + 4 f(0) = 4 The y-intercept is the point (0,4). ================================== Now, let y = 0 and solve for x. Keep in mind that y = f(x). So, set f(x) = 0 and solve for x. 0 = -2x^2 - 5x + 4 2x^2 + 5x - 4 = 0 This quadratic only factors using the quadratic formula. After doing the math, I got: x = (-5 ± √57)/4 So, the x-intercepts are the points ((-5 +√57)/4), 0) and ((-5 -√57)/4), 0). The reason I got this odd-looking x value is because the function I selected did not factor other than using the quadratic formula.
 Money_Word_Problems/235795: The audio outlet purchased 60 cassette recorders, gave away three in a contest, and sold the rest of at twice their purchase price. If the store's total profit was \$1188, how much did the store sell each recorder for1 solutions Answer 173649 by nyc_function(2733)   on 2009-11-06 09:46:24 (Show Source): You can put this solution on YOUR website!60 - 3 = 57 1188/57 = \$20.84 If you're looking for the original purchase price, you'd just divide by 2. Each cassette was sold for \$20.84 cents. THE PROVE: 57 cassettes at \$20.84 each = \$1187.88, which can be rounded to the nearest unit to become \$1188 (the profit made by the store).
 Geometry_Word_Problems/235879: could you please help me solve these three problems : 1)Mrs. Gardner went to the market. She purchased some lettuce heads and some tomatoes. There were 12 items purchased. She bought twice as many tomatoes as lettuce heads. 2)The Perimeter of a rectangle is 600. The length of the rectangle is 2 more than 3 times the width. 3)3 times the first of three consecutive numbers is 4 more than 2 times the second. please and thank you :) 1 solutions Answer 173643 by nyc_function(2733)   on 2009-11-06 09:27:26 (Show Source): You can put this solution on YOUR website!BIG TIP: Post one question at a time or else your questions will be ignored by the tutors. First of all, question 1 is incomplete. Where is the question? Understand? 2)The Perimeter of a rectangle is 600. The length of the rectangle is 2 more than 3 times the width. Question 2 is also imcomplete. Where is the question? 3)3 times the first of three consecutive numbers is 4 more than 2 times the second. The third question is also incomplete. Where is the question? What are we solving for per question?
 Functions/235766: given the function g(v)=3v+4, find g(5), g(-7), and g(6.7). find the slope of (5,3) and (8,-6) what is the domain of g(x)=10 --- 3-7x find the indicated outputs for f(x)=5x 2squared -5x f(0)= f(-1)= f(2)=1 solutions Answer 173597 by nyc_function(2733)   on 2009-11-05 22:50:23 (Show Source): You can put this solution on YOUR website!BIG TIP: Post one question at a time or else no one will reply. I will do: Given the function g(v) = 3v+4, find g(5), g(-7), and g(6.7). Replace v with each given value simplify individually. Let v = 5 g(5) = 3(5) + 4 g(5) = 15 + 4 g(5) = 19 =============== Let v = -7 g(-7) = 3(-7) + 4 g(-7) = -21 + 4 g(-7) = -17 =============== Let v = 6.7 g(6.7) = 3(6.7) + 4 g(6.7) = 20.1 + 4 g(6.7) = 24.1
 Inequalities/235774: Is there an equation for 5 is not less than 3 1 solutions Answer 173596 by nyc_function(2733)   on 2009-11-05 22:44:37 (Show Source): You can put this solution on YOUR website!No such equation for your expression. However, x ≠ y means that x and y do not represent the same value. If we let x = 5 and y = 3, we can then say that 5 ≠ 3.
 Evaluation_Word_Problems/235783: From start to finish, Ellen took 15 2/3 days to write a research paper for her literature class. This was 9/10 the time it took Rebecca to write her paper. How long did it take Rebecca to write her research paper?1 solutions Answer 173594 by nyc_function(2733)   on 2009-11-05 22:38:41 (Show Source): You can put this solution on YOUR website!It's easier working with improper fractions than with mixed numbers. So, we change 15_2/3 days to 47/3 days. Also, let t = the time is takes Rebecca to write her research paper. Here is your equation: 47/3 = 9t/10 Can you solve for t now?
 Functions/235781: f (x) = x^2 - 4x - 1 1 solutions Answer 173593 by nyc_function(2733)   on 2009-11-05 22:34:22 (Show Source): You can put this solution on YOUR website!What do you want to do with this function?
 Functions/235784: 3x+2y=121 solutions Answer 173592 by nyc_function(2733)   on 2009-11-05 22:33:25 (Show Source): You can put this solution on YOUR website!What do you want to do with your function? What are the directions?
 Permutations/235778: how many ways can a jury of 4 men and 4 women be selected from twelve men and ten women?1 solutions Answer 173591 by nyc_function(2733)   on 2009-11-05 22:32:23 (Show Source): You can put this solution on YOUR website!12P4 + 10P4 = The number of permutations of n objects taken r at a time is: nPr = n!/(n - r)! We each separately and then add the results. 12P4 = 12!/(12 - 4)! 12P4 = 479001600/8! 12P4 = 479001600/40320 12P4 = 11,880 ============================================= 10P4 = 10!/(10 - 4)! 10P4 = 3628800/6! 10P4 = 3628800/720 10P4 = 5040 ============================================= We now add both. 12P4 + 10P4 = 11,880 + 5040 12P4 + 10P4 = 16,920 ways
 Geometry_proofs/235779: I need help on solving a proof 1 solutions Answer 173587 by nyc_function(2733)   on 2009-11-05 22:16:16 (Show Source): You can put this solution on YOUR website!What proof? Where is it?
 Coordinate-system/235775: How do you find m and b for the following problem: 3x-2y=51 solutions Answer 173586 by nyc_function(2733)   on 2009-11-05 22:15:43 (Show Source): You can put this solution on YOUR website! The y-intercept form for an equation is y = mx + b, where m is the slope and b is the y-intercept. We need to change your equation into the form y = mx + b. To do so, we isolate y on the left side of the equation. 3x - 2y = 5 -2y = -3x + 5 y = (-3x + 5)/-2 y = (3/2)(x) - 5/2 From this final equation, we know that m = 3/2 and b = -5/2
 Travel_Word_Problems/235769: A car is traveling at 35 miles per hour. In about how many seconds will it travel 100 feet.1 solutions Answer 173584 by nyc_function(2733)   on 2009-11-05 22:11:15 (Show Source): You can put this solution on YOUR website!In distance word problems, times is measured in miles per hour not minutes. This means we need to convert hours to seconds. We also need to use the formula D = rt, where D = distance, r = rate or speed and t = time in hours and then solve for t. 100 = 35t Solving for t, we get 100/35 = t. We now convert 100/35 hours to seconds. 100/35 in terms of seconds is about 10285.714285714
 Numbers_Word_Problems/235771: twice the lesser of 2 consecutive integers = 12 less than the greater integer 2x = y-121 solutions Answer 173581 by nyc_function(2733)   on 2009-11-05 22:01:58 (Show Source): You can put this solution on YOUR website!What exactly are you trying to do here? Are you trying to solve for a specific variable? Consecutive integers can be more generally represented by x, x +1, x + 2, x + 3, etc where x is any integer. Let x = the lesser number Let x + 1 = the greater number 2x = (x + 1) - 12 Can you solve for x now?
 Equations/234964: 22-42=4(x-1) solve for x1 solutions Answer 173173 by nyc_function(2733)   on 2009-11-04 08:15:23 (Show Source): You can put this solution on YOUR website!22-42=4(x-1) 22 - 42 = 4x - 4 -20 = 4x - 4 -20 + 4 = 4x -16 = 4x -16/4 = x -4 = x THE PROVE: Let x = -4 22 - 42 = 4((-4)-1) -20 = 4(-5) -20 = -20 The answer is x = -4
 Equations/234965: 6(5+c)=5(c-4) solve for c1 solutions Answer 173172 by nyc_function(2733)   on 2009-11-04 08:12:53 (Show Source): You can put this solution on YOUR website!6(5+c)=5(c-4) 30 + 6c = 5c - 20 6c - 5c = -30 - 20 c = -50
 Coordinate-system/234966: The graph of x+2y=-5 conatains which point?1 solutions Answer 173171 by nyc_function(2733)   on 2009-11-04 08:12:05 (Show Source): You can put this solution on YOUR website!Do you have a list of the points to choose from?
 Numbers_Word_Problems/234970: Which of the following could be the product of two even numbers and an odd number each of which is greater than 1?1 solutions Answer 173170 by nyc_function(2733)   on 2009-11-04 08:10:04 (Show Source): You can put this solution on YOUR website!Which of the following? Where is your list?
 Linear-equations/234971: graph 2x - y is greater than or equal to 4 1 solutions Answer 173169 by nyc_function(2733)   on 2009-11-04 08:09:17 (Show Source): You can put this solution on YOUR website!2x - y ≥ 4 Here's a good math site that teaches how to graph inequalities: http://www.purplemath.com/modules/ineqgrph.htm Check it out. If you do not understand the site, write back.
 Expressions-with-variables/234896: p-4 over 5 x= 6q 2y+3x=5 -2x+5y-7=-12 4x+2y= 8x-5 4y-6(x-3) = 28+2x 1 solutions Answer 173162 by nyc_function(2733)   on 2009-11-04 06:13:01 (Show Source): You can put this solution on YOUR website!Which variable are you solving for? Are you solving for x, y, p or q? Understand? Write back....
 Expressions-with-variables/234889: 2x+2y=5 1 solutions Answer 173161 by nyc_function(2733)   on 2009-11-04 06:10:22 (Show Source): You can put this solution on YOUR website!What are you solving for? This question is incomplete. Please, send the entire question. In other words, are you solving for x or y?
 Inequalities/234884: I need help on solving k/5+2>6 and the steps to solving it.1 solutions Answer 173160 by nyc_function(2733)   on 2009-11-04 06:08:47 (Show Source): You can put this solution on YOUR website!Treat it like a regular equation. (k/5) + 2 > 6 Multiply each term by 5. After doing so, we get k + 10 > 30. Subtract 10 from 30. k > 30 - 10 k > 20 This means that for your inequality to be a true statement, the values of k must be greater than 20. THE PROVE: Say k = 25 (25/5) + 2 > 6 5 + 2 > 6 7 > 6....This is a true statement because 7 is bigger than 6. What about if k = 15? (15/5) + 2 > 6 3 + 2 > 6 5 > 6....This is not true because 5 is not bigger than 6. Understand? The correct answer is k > 20.
 Geometry_Word_Problems/234930: The volume of a rectangular box is 105 cubic inches. If the top is 6 inches by 3.5 inches, what is the height?1 solutions Answer 173157 by nyc_function(2733)   on 2009-11-04 06:03:06 (Show Source): You can put this solution on YOUR website!Volume = lenth * width * height V = LWH 105 = 6*3.5*H 105 = 21H 105/21 = H 5 = H The height is 5 inches.
 Miscellaneous_Word_Problems/234731: Sara has twice as much money as Miguel. If she had \$6 more, she would have 4/3 as much money as he has. How much money does each have now?1 solutions Answer 173155 by nyc_function(2733)   on 2009-11-04 05:56:33 (Show Source): You can put this solution on YOUR website!Sara has twice as much money as Miguel. If she had \$6 more, she would have 4/3 as much money as he has. How much money does each have now? Sara: money = 2x Miguel: money = x 2x + 6 = (4/3)(x) Can you solve for x now?
 real-numbers/234588: Whatwould order would these numbers be from least to greatest 2.3, .23, 23??1 solutions Answer 172968 by nyc_function(2733)   on 2009-11-03 12:38:53 (Show Source): You can put this solution on YOUR website!Least to greatest: .23, 2.3, 23
 Reduction-of-unit-multipliers/234584: It took 10 hours for me to get from Maryland to Denmark. How many seconds was that?1 solutions Answer 172967 by nyc_function(2733)   on 2009-11-03 12:37:38 (Show Source): You can put this solution on YOUR website!There are 60 seconds in one minute. There are 60 minutes in one hour. So, 60 times 60 = 3600 seconds = 1 hour. Then 3600 times 10 hours = 36,000 seconds.