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Recent problems solved by 'user_dude2008'

user_dude2008 answered: 1858 problems
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Linear-systems/530229: solve by substitution 2x+2y=2 and -4x+4y=12 1 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): You can put this solution on YOUR website!

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 exponets 1 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 simplify 1 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)^9/2 1 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 exponents 1 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 x 1 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

Polynomials-and-rational-expressions/397085: Multiply. Simplify your answer. 1 solutions Answer 281488 by user_dude2008(1861)   on 2011-01-19 21:39:44 (Show Source): You can put this solution on YOUR website!

Trigonometry-basics/397087: Find the value of x to two decimal places in the following equation: In x = 3 1 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 b 1 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 NEGATION 1 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=t 1 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 52 1 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 thanks 1 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^2-49 1 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 rs 1 solutions Answer 276318 by user_dude2008(1861)   on 2011-01-01 20:29:06 (Show Source): You can put this solution on YOUR website!

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