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# Recent problems solved by 'Alan3354'

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 Polygons/548828: Which of the following polygons has the greatest area? JUSTIFY your answer. 4cm 3cm 3cm 8cm 9cm 1 solutions Answer 357223 by Alan3354(31530)   on 2011-12-18 18:36:45 (Show Source): You can put this solution on YOUR website!What polygons?
 Travel_Word_Problems/548830: How many miles have been driven if you drove for 2 hours ?1 solutions Answer 357222 by Alan3354(31530)   on 2011-12-18 18:36:05 (Show Source): You can put this solution on YOUR website!Depends on how fast you drive.
 Trigonometry-basics/548596: sin2A=?1 solutions Answer 357118 by Alan3354(31530)   on 2011-12-18 10:14:57 (Show Source): You can put this solution on YOUR website!sin2A=? = 1/csc(2A)
 logarithm/548632: how do i do this problem? 2ln 3-ln 51 solutions Answer 357116 by Alan3354(31530)   on 2011-12-18 10:13:20 (Show Source): You can put this solution on YOUR website!What do you mean by "do?"
 Trigonometry-basics/548475: Given that A= 25(degrees), B=43(degrees), and c=17, solve triangle ABC. Round to the nearest hundreth1 solutions Answer 357065 by Alan3354(31530)   on 2011-12-17 22:48:30 (Show Source): You can put this solution on YOUR website!Given that A= 25(degrees), B=43(degrees), and c=17, solve triangle ABC. Round to the nearest hundreth ----------------------- angle C = 180 - (A + B) = 112 degs You can use the Law of Sines to find sides a & b
 Graphs/548482: Good afternoon, Hello i have homework on slope intercept equations and i needed help. Here's the problem it says 3x-2y=18 i have to put that in slope intercept form.1 solutions Answer 357054 by Alan3354(31530)   on 2011-12-17 22:01:41 (Show Source): You can put this solution on YOUR website!"Put in slope-intercept form" sounds complicated and difficult. All you do it solve for y, in terms of x. Not a big deal.
 Rectangles/548553: the length is 9 9nches wider than the width....the perimeter is 44 1 solutions Answer 357053 by Alan3354(31530)   on 2011-12-17 21:58:56 (Show Source): You can put this solution on YOUR website!Try to make sense.
 Proportions/548551: Ken's car can go 26 miles per gallon of gasoline. The car's gasoline tank holds 14 gallons. How far will he be able to go on a full tank?1 solutions Answer 357052 by Alan3354(31530)   on 2011-12-17 21:56:03 (Show Source): You can put this solution on YOUR website!Ken's car can go 26 miles per gallon of gasoline. The car's gasoline tank holds 14 gallons. How far will he be able to go on a full tank? ---------- You have 2 numbers to work with. Should you add them? Subtract them? Multiply them? ---------- "How far" is a distance, so you answer should be miles. How can you get miles from: gallons, and miles/gallons ??
 test/548474: How do you find the apothem1 solutions Answer 357012 by Alan3354(31530)   on 2011-12-17 15:53:42 (Show Source): You can put this solution on YOUR website!It depends on what your given.
 Numeric_Fractions/548457: the teacher said everybody who gets 70 percent would be given an A how many marks do they need to get an A1 solutions Answer 357011 by Alan3354(31530)   on 2011-12-17 15:52:55 (Show Source): You can put this solution on YOUR website!That makes no sense.
 Circles/548463: the radius is 6 meters around the pond i want add a rail and ts 1.5 meters tall. how many of raling do i need 1 solutions Answer 357010 by Alan3354(31530)   on 2011-12-17 15:51:28 (Show Source): You can put this solution on YOUR website!the radius is 6 meters around the pond i want add a rail and ts 1.5 meters tall. how many of raling do i need --------------------- If the radius is 6 meters, the circumference (around the pool) is 2*pi*6 = 12*pi =~ 37.7 meters ------------ The height is irrelevant.
 test/548468: Evaluate log5 in base 101 solutions Answer 357008 by Alan3354(31530)   on 2011-12-17 15:49:18 (Show Source): You can put this solution on YOUR website!log(5) =~ 0.69897
 Probability-and-statistics/548471: what is the probability that a person will watch the 6:00 evening news is 0.15?1 solutions Answer 357007 by Alan3354(31530)   on 2011-12-17 15:48:45 (Show Source): You can put this solution on YOUR website!It's a confusing question about watching the news.
 Numbers_Word_Problems/548429: Find 3 consecutive integers whose sum is -127. Thanks =)1 solutions Answer 356990 by Alan3354(31530)   on 2011-12-17 12:37:59 (Show Source): You can put this solution on YOUR website!-41 - 42 - 43 = -126 -42 - 43 - 44 = -129 -------------------- -127 is not possible. The sum of 3 integers will be a multiple of 3. -127 is not.
 Circles/548397: In the coordinate plane ,any circle which passes through (-2,-2) and (1,4) cannot also pass through (x,2006). what is the value of x1 solutions Answer 356982 by Alan3354(31530)   on 2011-12-17 10:28:39 (Show Source): You can put this solution on YOUR website!In the coordinate plane ,any circle which passes through (-2,-2) and (1,4) cannot also pass through (x,2006). what is the value of x --------------- A circle can go thru any 3 points, unless they are colinear. Find x so that (x,2006) is colinear with the other 2 points. ------- The slope of the line thru the 2 points is 6/3 = 2 2002 is the difference in the y-values from (1,4) to (x,2006) The difference in x is 1/2 that, = 1001 --> (1002,2006) x = 1002
 Quadratic-relations-and-conic-sections/548404: I have an astronomy program that provides information on known comets. They provide only two pieces of information: Perhelion and eccentricity. I have gone through a number of books and web pages both for astronomy problems and math problems trying to find out how to find out the length of the major axis. I am not very good at working with advanced math (though I have studied some that I needed to use). Please help me with this. Thank you1 solutions Answer 356974 by Alan3354(31530)   on 2011-12-17 09:54:33 (Show Source): You can put this solution on YOUR website!I have an astronomy program that provides information on known comets. They provide only two pieces of information: Perhelion and eccentricity. I have gone through a number of books and web pages both for astronomy problems and math problems trying to find out how to find out the length of the major axis. ------------------ The perihelion is the distance from one of the foci to the intersection of the ellipse its major axis. The distance from the center to the focus is a*e, where a = 1/2 the major axis and e is the eccentricity. -------- The perihelion, p = the distance from the focus to a, p = a - f ---------------- f = a*e p = a-f --> a = p+f a = p + a*e a - a*e = p a(1 - e) = p a = p/(1 - e) ------------- major axis = 2p/(1 - e) That what you're looking for? ----------------------------- PS Did you see the comet whose perihelion was only 120000 km from the Sun's surface? Comet Lovejoy.
 Triangles/548367: how to draw 57.5 degree angle without protector1 solutions Answer 356969 by Alan3354(31530)   on 2011-12-17 07:51:29 (Show Source): You can put this solution on YOUR website!I think you mean protractor. tan(57.5) = 1.5697 ----------- Measure 1 unit horizontal and 1.57 units up from a point.
 test/548381: In geometry ch11 how do i find the perimeter and area of a regular polygon1 solutions Answer 356968 by Alan3354(31530)   on 2011-12-17 07:47:31 (Show Source): You can put this solution on YOUR website!It depends on what you're given.
 Quadratic_Equations/548375: What is the minimum product of two numbers whose difference is 30?1 solutions Answer 356967 by Alan3354(31530)   on 2011-12-17 07:45:44 (Show Source): You can put this solution on YOUR website!What is the minimum product of two numbers whose difference is 30? ------------- If you mean the absolute value of the product, it's 0*30 = 0 --------- If you include negative numbers, it -15*15 = -225
 Linear-equations/548351: 4. The line represents an estimate of the average cost of gasoline each year. The line estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting, parallel, or perpendicular? Explain your reasoning. b. Use the equations of the lines to determine if they are parallel. What did you find? c. Did your answer to Part b. confirm your expectation in Part a? 1 solutions Answer 356935 by Alan3354(31530)   on 2011-12-16 21:30:05 (Show Source): You can put this solution on YOUR website!What lines?
 Geometry_Word_Problems/548355: find the area of the garden that measures 3 feet by 3/4 feet 1 solutions Answer 356934 by Alan3354(31530)   on 2011-12-16 21:29:32 (Show Source): You can put this solution on YOUR website!find the area of the garden that measures 3 feet by 3/4 feet ---------- Area = L*W = 9/4 sq feet
 Equations/548356: solve by elimination x + 9y = 75 -x + 5y=371 solutions Answer 356933 by Alan3354(31530)   on 2011-12-16 21:28:15 (Show Source): You can put this solution on YOUR website!solve by elimination x + 9y = 75 -x + 5y= 37 ------------- Add
 absolute-value/548323: I have to find the absolute value of 11/41 solutions Answer 356930 by Alan3354(31530)   on 2011-12-16 21:16:43 (Show Source): You can put this solution on YOUR website!I have to find the absolute value of 11/4 --------- |11/4| = 11/4 Didn't take long.
 Triangles/548354: what is the measure of the vertex angle of an isosceles triangle if one isosceles triangle if one of its base angles measures 70 degrees and its congruent sides each measure 15 cm?1 solutions Answer 356929 by Alan3354(31530)   on 2011-12-16 21:14:47 (Show Source): You can put this solution on YOUR website!what is the measure of the vertex angle of an isosceles triangle if one isosceles triangle if one of its base angles measures 70 degrees and its congruent sides each measure 15 cm? ----------- The base angles are equal, 70 degs each. That makes the vertex angle 40 degs (180 - 2*70). The side lengths are irrelevant.
 test/548317: Molly needs to get at least an 80% on her test. How many questions can she afford to miss without going below 80%? 1 solutions Answer 356925 by Alan3354(31530)   on 2011-12-16 20:21:18 (Show Source): You can put this solution on YOUR website!How many questions are there?
 Linear-equations/548295: 7x = 6y + 48 find the slope 1 solutions Answer 356887 by Alan3354(31530)   on 2011-12-16 17:28:13 (Show Source): You can put this solution on YOUR website!7x = 6y + 48 find the slope ---------- Solve for y. Then the coefficient of x is the slope.
 Graphs/548298: Which of the following points lies on the line 5y-2x=-10? (0,5) (5,0) (2,0) or (0,2) Thank you!!1 solutions Answer 356886 by Alan3354(31530)   on 2011-12-16 17:25:38 (Show Source): You can put this solution on YOUR website!Which of the following points lies on the line 5y-2x=-10? (0,5) (5,0) (2,0) or (0,2) --------- 5y-2x=-10 ---------------- 2x - 5y = 10 Try (0,5) Sub 0 for x and 5 for y 2*0 - 5*5 =? 10 Doesn't work. --------- Try the others the same way.
 Money_Word_Problems/548313: At a movie theater, the ratio of tickets sold for adults and children was 2 to 3. If 177 children tickets were sold, how many adult tickets were sold?1 solutions Answer 356885 by Alan3354(31530)   on 2011-12-16 17:23:16 (Show Source): You can put this solution on YOUR website!At a movie theater, the ratio of tickets sold for adults and children was 2 to 3. If 177 children tickets were sold, how many adult tickets were sold? ---------- 177/3 = 59 59*2 = 118 adult tix
 Matrices-and-determiminant/548291: Solve for X, Y and Z using Matrices. I have tried over 20 times to get this; and I'm just not getting it. Thank you for your help. x - y - 2z = -1 x + 2y + z = 5 5x + 4y - z = 131 solutions Answer 356872 by Alan3354(31530)   on 2011-12-16 15:08:10 (Show Source): You can put this solution on YOUR website!There's no unique solution. The 2nd column = the sum of the 1st & 3rd --> dependent.
 percentage/548273: I have a base number of 171,939. I want to know what percentage is 4,067 of 171,939.Please show how to get the answer. Thank you, 1 solutions Answer 356859 by Alan3354(31530)   on 2011-12-16 14:00:27 (Show Source): You can put this solution on YOUR website!4067/171939 = 0.02365... times 100 = 2.365% ------------
 Radicals/548269: The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1250. The sum of the numbers is :1 solutions Answer 356851 by Alan3354(31530)   on 2011-12-16 13:25:10 (Show Source): You can put this solution on YOUR website!The ratio of three numbers is 3 : 4 : 5 and the sum of their squares is 1250. The sum of the numbers is : ----------------- = apx 20 --> 15, 20 & 25 Sum = 60