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Recent problems solved by 'rfer'

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Angles/235829: The measure of an angle is 8 less than three times the measure of the angles supplement. Find the measure of the angle. 1 solutions Answer 173676 by rfer(12662)   on 2009-11-06 11:11:22 (Show Source): You can put this solution on YOUR website! 3x-8+x=180 4x=188 x=47 degrees 3x-8=133 degrees

Linear-equations/235906: A rectangular shaped parking lot is to have a perimeter of 382 yards. If the width must be 84 yards, what will the length be? 1 solutions Answer 173674 by rfer(12662)   on 2009-11-06 11:03:22 (Show Source): You can put this solution on YOUR website! P=2w+2L 382=2(84)+2L 382=168+2L 2L=214 L=107 yds

Linear_Algebra/235805: solve -6+4y-8 1 solutions Answer 173605 by rfer(12662)   on 2009-11-06 00:18:23 (Show Source): You can put this solution on YOUR website! -6+4y-8=0 4y=12 y=3

Graphs/235809: What is the slope and y-intercept of -2x-3y=6? 1 solutions Answer 173604 by rfer(12662)   on 2009-11-06 00:17:20 (Show Source): You can put this solution on YOUR website! -2x-3y=6 -3y=2x+6 y=-2/3x-2 m=-2/3 b=-2 (0,-2)

Graphs/235806: What is the slope and y-intercept of 2x-5y=15? 1 solutions Answer 173603 by rfer(12662)   on 2009-11-06 00:15:40 (Show Source): You can put this solution on YOUR website! 2x-5y=15 -5y=-2x+15 y=2/5x-3 m=2/5 b=-3 (0,-3)

Graphs/235798: Write the function 5x + 10y = -20 in slope-intercept form. 1 solutions Answer 173602 by rfer(12662)   on 2009-11-06 00:13:46 (Show Source): You can put this solution on YOUR website! 5x+10y=-20 10y=-5x-20 y=-1/2x-2

Number-Line/235786: how i can represent cubic root of 3 on number line 1 solutions Answer 173599 by rfer(12662)   on 2009-11-05 23:21:01 (Show Source): You can put this solution on YOUR website! 1.44 is the cu rt of 3 mark the number line between 1 and 2 just a little toward the 1 from half way between the two numbers.

Graphs/235579: y is less then or equal to -x 1 solutions Answer 173500 by rfer(12662)   on 2009-11-05 17:54:29 (Show Source): You can put this solution on YOUR website! y<=-x

expressions/235637: write each phrase as numerical or algebraic expression. 1. the quotient of 325 and 25 1 solutions Answer 173498 by rfer(12662)   on 2009-11-05 17:52:09 (Show Source): You can put this solution on YOUR website! 325/25=

Equations/235619: please help me with this multi step equation and show work -8= -(x+4) 1 solutions Answer 173495 by rfer(12662)   on 2009-11-05 17:51:26 (Show Source): You can put this solution on YOUR website! -8=-(x+4) -8=-x-4 -4=-x multiply through by -1 x=4

Graphs/235632: I'm being to decide whether the givin point lies on the graph of the line. The equation is this: 2y-4x=8,(-2, 8). This is over some work that I missed in class and I am not understanding it. Could you please help? 1 solutions Answer 173494 by rfer(12662)   on 2009-11-05 17:49:18 (Show Source): You can put this solution on YOUR website! Go ahead and solve the equation creating an input/output table, graph those points, draw a line the covers your points the see if this point falls on your line, Give it a try. Bob

expressions/235620: xy challenge - Rewrite the expression as a product. 4x + 7x I do not understand what this means or how to rewrite it. Thank you 1 solutions Answer 173493 by rfer(12662)   on 2009-11-05 17:46:14 (Show Source): You can put this solution on YOUR website! 4x+7x=11x

Proportions/235600: please help me solve this word problem: Maria can write a paper an average of 4 pages during a 90 min. class period. At this rate,how many hours will it take her to write 16 pages? create the proportion then solve. This is what I did: 4/90=16/x, then i multiplied them and then i divided the number I got to 4. I got:x=360. But my teacher got x=6... Please tell me how she got that. thank you 1 solutions Answer 173487 by rfer(12662)   on 2009-11-05 17:04:58 (Show Source): You can put this solution on YOUR website! your answer is in minutes and her answer is in hours, they equal just convert your answer to hrs.

Distributive-associative-commutative-properties/235599: what is -2[a+3]=36 1 solutions Answer 173484 by rfer(12662)   on 2009-11-05 16:58:24 (Show Source): You can put this solution on YOUR website! -2(a+3)=36 -2a-6=36 -2a=42 a=-21

Equations/235593: 360=x+(x+20)+(x+5)+(x-5)+(x+10) 1 solutions Answer 173482 by rfer(12662)   on 2009-11-05 16:57:12 (Show Source): You can put this solution on YOUR website! 360=6x+30 330=6x x=55

Equations/235333: write in standard form 2x + 3y + 7 = 3 1 solutions Answer 173393 by rfer(12662)   on 2009-11-05 00:22:17 (Show Source): You can put this solution on YOUR website! 2x+3y=-4

Linear-systems/235282: graph using m and b 6x + 4y = 16 m= b= ( , ) 1 solutions Answer 173392 by rfer(12662)   on 2009-11-05 00:21:26 (Show Source): You can put this solution on YOUR website! 6x+4y=16 4y=-6x+16 y=-6/4+4 m=-6/4 b=4 (0,4)

Expressions-with-variables/235321: Translate to an algebraic expression, The product of 33% and some number. Use d to represent some number. The translation is? 1 solutions Answer 173391 by rfer(12662)   on 2009-11-05 00:14:33 (Show Source): You can put this solution on YOUR website! .33d

Equations/235334: find the x-intercept of x - 2y = 9 1 solutions Answer 173390 by rfer(12662)   on 2009-11-05 00:12:00 (Show Source): You can put this solution on YOUR website! x-2(0)=9 x=9 (9,0)

Linear-systems/235337: please SOLVE and CHECK this algebra problem :"find three consecutive numbers whose sum is 90." 1 solutions Answer 173389 by rfer(12662)   on 2009-11-05 00:10:25 (Show Source): You can put this solution on YOUR website! x+x+1+x+2=90 3x=87 x=29 x+1=30 x+2=31

Numbers_Word_Problems/235340: The sum of seventeen and four times T is tha same as the difference of six times T and nine 1 solutions Answer 173387 by rfer(12662)   on 2009-11-05 00:08:09 (Show Source): You can put this solution on YOUR website! 4t+17=6t-9 -2t=-26 t=13

Polynomials-and-rational-expressions/235218: how do you divide a x cubed by x squared? 1 solutions Answer 173347 by rfer(12662)   on 2009-11-04 20:15:08 (Show Source): You can put this solution on YOUR website! subtract the exponents

Proportions/235196: 8/15= x-5/6 1 solutions Answer 173346 by rfer(12662)   on 2009-11-04 20:13:32 (Show Source): You can put this solution on YOUR website! 16/30=x-25/30 x=41/30, 1 11/30

Rational-functions/235255: 1-7x=9x+2 1 solutions Answer 173343 by rfer(12662)   on 2009-11-04 20:07:50 (Show Source): You can put this solution on YOUR website! 1-7x=9x+2 -1=16x x=-1/16

Volume/235253: If the edge of a cube is tripled,what change takes place in the volume and in the surface area? 1 solutions Answer 173341 by rfer(12662)   on 2009-11-04 20:06:17 (Show Source): You can put this solution on YOUR website! 3^3=27 9^3=729 The volume increases by 27 times 3*3=9*6=54 9*9=81*6=486 The surface area increases by 9 times

Travel_Word_Problems/235184: at about the speed of 12 mph,how far could you run in one minute? 1 solutions Answer 173311 by rfer(12662)   on 2009-11-04 18:20:05 (Show Source): You can put this solution on YOUR website! 12/60=.2 miles

Angles/235159: the measure of the angle is 2 times greater than its supplement. i tried x+2x=180 1 solutions Answer 173310 by rfer(12662)   on 2009-11-04 18:19:12 (Show Source): You can put this solution on YOUR website! you are set up right. 3x=180 x=60 degrees 2x=120 degrees

Linear_Equations_And_Systems_Word_Problems/235172: saftey rent a truck costs $41.95 plus $.29 per mile. city rentals rents the truck for $38.95 plus $.31 per mile. for what milage are the costs the same? 1 solutions Answer 173308 by rfer(12662)   on 2009-11-04 18:15:19 (Show Source): You can put this solution on YOUR website! 41.95+.29x=38.95+.31x 3=.02x x=150 miles

Linear-equations/235091: The product of 44% and some number What is the translation in an algebraic expression Thank you 1 solutions Answer 173283 by rfer(12662)   on 2009-11-04 16:34:57 (Show Source): You can put this solution on YOUR website! product means multiplication .44x

Finance/234904: You borrow $5000 from your parents and agree to repay them $5500 in five years. They are charging you a flat simple interest rate. What is the interest rate. 1 solutions Answer 173201 by rfer(12662)   on 2009-11-04 10:32:25 (Show Source): You can put this solution on YOUR website! 100/5000=.02=2% per yr

Expressions-with-variables/234967: what is the linear substitution of x+3y=5 -2x+y=4 1 solutions Answer 173200 by rfer(12662)   on 2009-11-04 10:26:31 (Show Source): You can put this solution on YOUR website! x+3y=5, x=-3y+5 -2x+y=4 -2(-3y+5)+y=4