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# Recent problems solved by 'user_dude2008'

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, >>Next

 Linear-systems/530229: solve by substitution 2x+2y=2 and -4x+4y=121 solutions Answer 349960 by user_dude2008(1861)   on 2011-11-11 21:25:13 (Show Source): You can put this solution on YOUR website!Answers: x=-1 and y=2
 test/526630: 1 solutions Answer 348583 by user_dude2008(1861)   on 2011-11-05 17:10:51 (Show Source):
 Polynomials-and-rational-expressions/519393: 36^1/2 -------------- 15^2 simplify the following algebraic expressions: 1 solutions Answer 345577 by user_dude2008(1861)   on 2011-10-22 20:05:40 (Show Source): You can put this solution on YOUR website! 36^1/2 6 2 -------------- = ------------ = -------- 15^2 225 75 
 Exponents/519400: divide and simplify s^9/s^17 type exponential notation with positive exponets1 solutions Answer 345576 by user_dude2008(1861)   on 2011-10-22 20:03:56 (Show Source): You can put this solution on YOUR website!s^9/s^17 = 1/s^8
 Exponents/519402: find the following ^14√(-4)^14 simplify1 solutions Answer 345575 by user_dude2008(1861)   on 2011-10-22 20:03:28 (Show Source): You can put this solution on YOUR website!^14√(-4)^14 = 4
 Exponents/519399: rewrite the following expression with positive exponets (42xy)^-2/9 A. -(42xy)^2/9 B. 1/(42xy)^9/2 C. 1/(42xy)^2/9 D. (42xy)^9/21 solutions Answer 345574 by user_dude2008(1861)   on 2011-10-22 20:02:08 (Show Source): You can put this solution on YOUR website!answer is C
 Exponential-and-logarithmic-functions/519416: (32xy)^-2/9 Rewrite positive exponents1 solutions Answer 345572 by user_dude2008(1861)   on 2011-10-22 20:01:24 (Show Source): You can put this solution on YOUR website!(32xy)^-2/9 = 1/[(32xy)^2/9]
 Exponents/519411: 3x^7-12x^6+24x^5 factor completely I did but I need to know if it will factor anymore. here is my answer 3x^5(x^2-4x+8)1 solutions Answer 345571 by user_dude2008(1861)   on 2011-10-22 20:00:55 (Show Source): You can put this solution on YOUR website!You have the right answer. It won't factor any more.
 Linear-equations/507917: Find an equation of a line perpendicular to x=3 and passing through the point (3, 4)1 solutions Answer 340801 by user_dude2008(1861)   on 2011-10-02 13:50:15 (Show Source): You can put this solution on YOUR website!y = 4
 Exponents-negative-and-fractional/398462: Please help me with the following problem. I am not sure where to begin. Thank you. Factor the polynomial (x-1)(x+4)^2-(x-1)^2(x+4). Your answer can be written as A(x+B)(x+C) with integers A, B, C and B A= B= C=1 solutions Answer 282345 by user_dude2008(1861)   on 2011-01-23 14:41:56 (Show Source): You can put this solution on YOUR website!(x-1)(x+4)^2-(x-1)^2(x+4) (x-1)(x+4)((x+4)-(x-1)) (x-1)(x+4)(x+4-x+1) (x-1)(x+4)5 5(x-1)(x+4)
 Triangles/398475: I have side a= x-2, side b=x and side c=x+2 and it is a right triangle.. I am supposed to solve for x1 solutions Answer 282342 by user_dude2008(1861)   on 2011-01-23 14:31:12 (Show Source): You can put this solution on YOUR website!(x-2)^2+x^2=(x+2)^2 x^2-4x+4+x^2=x^2+4x+4 x^2-8x=0 x(x-8)=0 x=0 or x=8 Answer: x=8
 Inequalities/397082: y>3x,{(1,5),(1,0),(-1,0),(5,1)} determine which ordered pairs are part of the solution set for each inequality.1 solutions Answer 281493 by user_dude2008(1861)   on 2011-01-19 21:42:24 (Show Source): You can put this solution on YOUR website!Answers: (1,5),(-1,0)
 Evaluation_Word_Problems/397090: how do i write an algebraic expession for nine times m then incresed by six??1 solutions Answer 281489 by user_dude2008(1861)   on 2011-01-19 21:40:03 (Show Source): You can put this solution on YOUR website!9m+6
 Trigonometry-basics/397087: Find the value of x to two decimal places in the following equation: In x = 31 solutions Answer 281487 by user_dude2008(1861)   on 2011-01-19 21:39:16 (Show Source): You can put this solution on YOUR website!x=e^3=20.0855369232089
 Square-cubic-other-roots/394570: not sure how to do this 4^1/5 * 4 ^2/5 =1 solutions Answer 279955 by user_dude2008(1861)   on 2011-01-13 23:03:21 (Show Source): You can put this solution on YOUR website!4^1/5 * 4 ^2/5 = 4^(1/5+2/5) = 4^3/5
 logarithm/394438: solve the equation for x. e^ax=Ce^bx, where a is not equal to b1 solutions Answer 279855 by user_dude2008(1861)   on 2011-01-13 19:35:36 (Show Source): You can put this solution on YOUR website!e^ax=Ce^bx ln(e^ax)=ln(C)+ln(e^bx) ax=ln(C)+bx ax-bx=ln(C) (a-b)x=ln(C) x=ln(C)/(a-b)
 Inequalities/393015: Please solve and show work thanks! If a-b > a+b, which statement is true? A) THE VALUE OF A IS POSITIVE B) THE VALUE OF B IS POSITIVE C) THE VALUE OF A IS NEGATIVE D) THE VAULUE OF B IS NEGATION1 solutions Answer 278969 by user_dude2008(1861)   on 2011-01-10 22:17:01 (Show Source): You can put this solution on YOUR website!a-b > a+b -b > b 0 > b+b 0 > 2b 0 > b b < 0 Answer: D
 Linear-systems/391710: my Question is like that :3x+4y=s 6x+8y+t a)determine particular values for s and t so that the system is consistent. b)determine particular values for s and t so that the system is inconsistent. c)what relationship between the values of s and t will guarantee that the system is consistent? my work was stuck at here :eqn 1+eqn 2 -2s+t=0 2s=t1 solutions Answer 277980 by user_dude2008(1861)   on 2011-01-07 17:44:18 (Show Source): You can put this solution on YOUR website!a) s = 1 t = 2 b) s = 3 t = 9 c) t = 2s
 Quadratic_Equations/390358: Find two consecutive even integers such that the sum of their squares is 521 solutions Answer 276745 by user_dude2008(1861)   on 2011-01-03 17:31:07 (Show Source): You can put this solution on YOUR website!(2x)^2+(2x+2)^2=52 4x^2+4x^2+8x+4=52 4x^2+4x^2+8x+4-52=0 8x^2+8x-48=0 8(x^2+x-6)=0 8(x+3)(x-2)=0 x+3=0 or x-2=0 x=-3 or x=2 Numbers are: -6, -4 or 4, 6
 Numbers_Word_Problems/390207: There are 4 friends going to a movie.How many seating combinations are possible?1 solutions Answer 276615 by user_dude2008(1861)   on 2011-01-03 01:13:39 (Show Source): You can put this solution on YOUR website!4! = 4*3*2*1 = 24
 Length-and-distance/390012: a translation moves A(2,3) onto A' (4,8). What are the coordinates of B', the image of B(4,6) under the same translation? 1) (12,18) 2) (8,12) 3) (6,8) 4) (6,11)1 solutions Answer 276477 by user_dude2008(1861)   on 2011-01-02 16:38:11 (Show Source): You can put this solution on YOUR website!P(x,y) ----> P'(x+2,y+5) B(4,6) ----> B'(4+2, 6+5) = B'(6,11) Answer: (6,11)
 Length-and-distance/390009: if the measure of the angles of a triangle are in the ratio 2:3:4, the measure of the smallest angle is 1) 60 degrees 2) 20 degrees 3) 40 degrees 4) 80 degrees 1 solutions Answer 276476 by user_dude2008(1861)   on 2011-01-02 16:36:40 (Show Source): You can put this solution on YOUR website!2x+3x+4x=180 9x=180 x=20 2x=2*20=40 Answer: 40
 Functions/390007: What is the domain and range if there is a closed circle at (-4,4) and a open circle at (3,-5)points are connected thanks1 solutions Answer 276474 by user_dude2008(1861)   on 2011-01-02 16:34:59 (Show Source): You can put this solution on YOUR website!Domain: Range:
 Miscellaneous_Word_Problems/390000: Write the following union of intervals as a single interval. [0, 3) U (2, 6] 1 solutions Answer 276470 by user_dude2008(1861)   on 2011-01-02 16:26:29 (Show Source): You can put this solution on YOUR website![0, 3) U (2, 6] = [0, 6]
 Rational-functions/389805: Find the value of |3 7||5 -2| Thank you so much!!!!!! God Bless and Happy New Year!!!!!!!1 solutions Answer 276346 by user_dude2008(1861)   on 2011-01-01 23:17:31 (Show Source): You can put this solution on YOUR website!|3 7| |5 -2| = (3)(-2)-(5)(7) = -6-35 = -41 Answer: -41
 Complex_Numbers/389790: what is the domain of the function: f(x) 3x^2/x^2-491 solutions Answer 276320 by user_dude2008(1861)   on 2011-01-01 20:32:45 (Show Source): You can put this solution on YOUR website!Domain:
 Complex_Numbers/389788: please help me simplify this expression 5 square root r times square root rs1 solutions Answer 276318 by user_dude2008(1861)   on 2011-01-01 20:29:06 (Show Source):
 Triangles/389777: an isoseles triangle has a perimeter of 50in. the congrtuent sides measure (2x=3)cm. the length of the third side is 4x cm. what is the valu of x?1 solutions Answer 276310 by user_dude2008(1861)   on 2011-01-01 18:56:51 (Show Source): You can put this solution on YOUR website!(2x+3)+(2x+3)+(4x)=50 2x+3+2x+3+4x=50 8x+6=50 8x=50-6 8x=44 x=44/8 x=11/2 x=5.5
 Percentage-and-ratio-word-problems/388746: Mrs. Smith's class has 15 girls and 12 boys. The entire school has 300 girls and the same proportion f girls to boys as Mrs. Smith's class. How many boys does the entire school have?1 solutions Answer 275120 by user_dude2008(1861)   on 2010-12-24 17:31:31 (Show Source): You can put this solution on YOUR website!b=# of boys 15/12=300/b 15b=3600 b=3600/15 b=240 Answer: 240 boys
 Geometry_Word_Problems/388531: the perimeter of a parallelogram is 54cm. the ratio of the lengths of the sides is 2:7. what are the lengths of the sides?1 solutions Answer 274937 by user_dude2008(1861)   on 2010-12-22 23:38:41 (Show Source): You can put this solution on YOUR website!2/7=a/b 2b=7a 2a+2b=54 2a+7a=54 9a=54 a=6 2b=7*6 2b=42 b=21 sides are 6, 21