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Recent problems solved by 'rfer'

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Polynomials-and-rational-expressions/418376: Simplify by removing the factors of 1 6m^2 + 6m over 42m^2 +36m 1 solutions Answer 292778 by rfer(12657)   on 2011-03-06 19:53:33 (Show Source): You can put this solution on YOUR website! 6m(m+1/8m+6)

Polynomials-and-rational-expressions/418381: Please solve 9 over x+9 = 8 over x-3 1 solutions Answer 292777 by rfer(12657)   on 2011-03-06 19:49:42 (Show Source): You can put this solution on YOUR website! 9/x+9=8/x-3 1/x=-12 1=-12x x=-1/12

Polynomials-and-rational-expressions/418387: please solve 7 over y = 8 over y - 1 over 5 1 solutions Answer 292776 by rfer(12657)   on 2011-03-06 19:39:46 (Show Source): You can put this solution on YOUR website! 7/y=8/y-1/5 1/y=1/5 1=1/5y 1/(1/5)=y 1*5/1=y y=5

Exponential-and-logarithmic-functions/418332: what is y to the power of 3 multiplied by y to the power of 2? i think the answer is y to the power of 5 but i want to make sure 1 solutions Answer 292766 by rfer(12657)   on 2011-03-06 18:16:01 (Show Source): You can put this solution on YOUR website! you are correct y^5 when multiplying exponents, you just add the exponents/.

Linear-equations/418335: Enter the equation of the following using line in slope-intercept form. x-intercept = 2; y-intercept = -3 1 solutions Answer 292765 by rfer(12657)   on 2011-03-06 18:14:09 (Show Source): You can put this solution on YOUR website! y=3/2x-3

Quadratic_Equations/418275: Solve for x and find the x-interceptors for 3x^2-7x-13=0 1 solutions Answer 292764 by rfer(12657)   on 2011-03-06 18:11:42 (Show Source): You can put this solution on YOUR website! zeros are -1.13, 3.5

test/418326: Given the following function, find f (-4). f(x) = 2−x^2 / x^3−x^2+6 f(-4)= 1 solutions Answer 292762 by rfer(12657)   on 2011-03-06 17:55:11 (Show Source): You can put this solution on YOUR website! f(-4)=2--4^2/-4^3--4^2+6 f(-4)=2-16/-64-16+6 f(-4)=2+1/4-10 f(-4)=9/5-40/4 f(-4)=-31/4 f(-4)=-7 3/4

Reduction-of-unit-multipliers/417858: Whats the unit rate of 500 pounds in 10 cartons? 1 solutions Answer 292553 by rfer(12657)   on 2011-03-05 20:53:05 (Show Source): You can put this solution on YOUR website! 50 lbs per carton

real-numbers/417948: solve for a m=a+3b/2 1 solutions Answer 292551 by rfer(12657)   on 2011-03-05 20:50:30 (Show Source): You can put this solution on YOUR website! a=m-(3b/2)

Divisibility_and_Prime_Numbers/417872: -5r-6-7+r15 1 solutions Answer 292549 by rfer(12657)   on 2011-03-05 20:49:31 (Show Source): You can put this solution on YOUR website! 10r-13

Graphs/417947: Graph the equation and identify theY intercept y+x=-3 1 solutions Answer 292547 by rfer(12657)   on 2011-03-05 20:47:23 (Show Source): You can put this solution on YOUR website! y int b=-3 (0-3)

percentage/417884: working with percentages as fractions. find the total. 23 is 3% of the total 1 solutions Answer 292546 by rfer(12657)   on 2011-03-05 20:46:42 (Show Source): You can put this solution on YOUR website! 23/0.03=767

Quadratic_Equations/417935: a farmer has $2400 to spend to fence two rectangular pastures. the local contractor will build the fence at a cost of $6.25/m what is the largest total area that the farmer can have fenced for that price ? 1 solutions Answer 292540 by rfer(12657)   on 2011-03-05 20:37:46 (Show Source): You can put this solution on YOUR website! 2400/6.25=384 m 384/4=96 96^2=9216 sq m

Travel_Word_Problems/417945: Two trains going in opposite directions leave at the same time. train B travels 5 mph faster than train A. in 4 hours the trains are 460 miles apart. find the speed of each 1 solutions Answer 292538 by rfer(12657)   on 2011-03-05 20:35:07 (Show Source): You can put this solution on YOUR website! 460/4=115 mi in one hr x+x+5=115 2x=110 x=55 mph x+5=60 mph

Travel_Word_Problems/417940: how long wuld it take a small airplane to travel 1100 miles at a rate of 200mph 1 solutions Answer 292537 by rfer(12657)   on 2011-03-05 20:32:48 (Show Source): You can put this solution on YOUR website! t=D/r t=1100/200 t=5.5 hrs

Linear-equations/417933: determine whether the ordred pair is a solution of the inequality. (9,10); 5y-6x>2 1 solutions Answer 292532 by rfer(12657)   on 2011-03-05 20:17:01 (Show Source): You can put this solution on YOUR website! 5*10-6x>2 -6x>-48 x < 8

Quadratic-relations-and-conic-sections/417792: What the vertex and the axis of symmetry for the parabola with the given equation. y = 5x^(2) - 30x + 47 1 solutions Answer 292470 by rfer(12657)   on 2011-03-05 13:00:47 (Show Source): You can put this solution on YOUR website! a=5, b=-30, c=47 30/10=3 Axis (3,2) vertex no zero's

Systems-of-equations/417809: x-y=8 x+y=-2 how would i solve this?? 1 solutions Answer 292468 by rfer(12657)   on 2011-03-05 12:54:53 (Show Source): You can put this solution on YOUR website! y=-x-2 x-(-x-2)=8 2x+2=8 2x=6 x=3 ---------------- 3-y=8 -y=5 y=-5 ----------- 3-5=-2

Evaluation_Word_Problems/417806: 10) Two trains running on the same track travel at the rates of 30 and 35 mph, respectively. If the slower train starts out an hour earlier, how long will it take the faster train to catch up with it? 1 solutions Answer 292467 by rfer(12657)   on 2011-03-05 12:52:13 (Show Source): You can put this solution on YOUR website! 30 mi lead 5 mph overtake speed. 30/5=6 hrs

Linear-equations/417594: how do i write an equation by looking at a slope line? 1 solutions Answer 292377 by rfer(12657)   on 2011-03-04 20:33:37 (Show Source): You can put this solution on YOUR website! y=mx+b m=slope b=y int

Money_Word_Problems/417416: simple interest for 12 months on $4,500.00 annual percentage rate 1 solutions Answer 292281 by rfer(12657)   on 2011-03-04 13:18:20 (Show Source): You can put this solution on YOUR website! need more information

Graphs/417415: write the equation in standard from with integer coefficients 5x-y+6=0 y=-3x=9 1 solutions Answer 292279 by rfer(12657)   on 2011-03-04 13:16:38 (Show Source): You can put this solution on YOUR website! 5x-y=-6 3x+y=9

Surface-area/417480: Im am puzzled with the steps I need to solve, can anyone help? Determine (a) the area and (b) the circumference of the circle circle diameter is 28yd. 1 solutions Answer 292276 by rfer(12657)   on 2011-03-04 13:11:43 (Show Source): You can put this solution on YOUR website! A=pir^2 A=3.14*14^2 A=615.44 ------------- C=pid C=3.14*28 C=87.92

test/417165: Write an expression for the amount in the bank after 1 year if P dollars are in the account with the annual yield 2% 1 solutions Answer 292121 by rfer(12657)   on 2011-03-03 19:54:51 (Show Source): You can put this solution on YOUR website! A=P(1.02)

percentage/417167: A salesperson receives a 17.5% commission on her sales. If her total sales for the month are $8600, what is her commission? Commission amount: $ 1 solutions Answer 292120 by rfer(12657)   on 2011-03-03 19:53:39 (Show Source): You can put this solution on YOUR website! 8600*0.175=1505

Graphs/417145: Use the slope and y-intercept to graph y=7-3x 1 solutions Answer 292118 by rfer(12657)   on 2011-03-03 19:52:38 (Show Source): You can put this solution on YOUR website! slope m=-3 y int b=7 (0,7)

Money_Word_Problems/417159: If carol has a check for $1350. 1/5 of her check will go to rent. How much is she paying in rent? 1 solutions Answer 292116 by rfer(12657)   on 2011-03-03 19:51:05 (Show Source): You can put this solution on YOUR website! 1350*.20=270

Numeric_Fractions/417172: solve 2/13 + 11/39 1 solutions Answer 292113 by rfer(12657)   on 2011-03-03 19:49:09 (Show Source): You can put this solution on YOUR website! 6/39+11/39=17/39

percentage/417163: Cask’n’Cork wine shop has a markup rate of 17.3%. What price will the shop charge for a bottle of zinfandel wine that costs $13.75 wholesale? $ 1 solutions Answer 292111 by rfer(12657)   on 2011-03-03 19:48:07 (Show Source): You can put this solution on YOUR website! 13.75*1.173=16.13

Equations/417186: p=-10-p/5 1 solutions Answer 292110 by rfer(12657)   on 2011-03-03 19:45:53 (Show Source): You can put this solution on YOUR website! 5p=-10-p 6p=10 p=10/6 p=1 2/3

Equations/417175: What is x in the eqution 5/13-2x=-8/13 1 solutions Answer 292109 by rfer(12657)   on 2011-03-03 19:44:17 (Show Source): You can put this solution on YOUR website! -2x=-1 x=1/2