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Recent problems solved by 'rfer'

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Miscellaneous_Word_Problems/455277: 2. LaToya Smith is a buyer for a large manufacturing company . She can purchase 200 pounds of chemicals for $95. She can also purchase mixing vats for $400 each. Sales tax on all products is 6% of the total cost of the order. Shipping costs for her order will be a flat $30. a. At this same rate, how much would 4,000 pounds of chemicals cost? 1 solutions Answer 312594 by rfer(12662)   on 2011-05-29 18:13:41 (Show Source): You can put this solution on YOUR website! 95/200=x/4000 200x=380000 x=1900 (1900+400)(1.06)+30=$2468

Linear_Equations_And_Systems_Word_Problems/455279: the weight W of an object on the moon varies directly as its weight E on earth. a person who weights 133 lbs on earth weighs 26.6 lb on the moon. how much would a 136 lb person weigh on the moon? 1 solutions Answer 312593 by rfer(12662)   on 2011-05-29 18:08:21 (Show Source): You can put this solution on YOUR website! 26.6/133=x/136 133x=3617.6 x=27.2 lbs

Miscellaneous_Word_Problems/455304: find -x when x = - 3/89 1 solutions Answer 312591 by rfer(12662)   on 2011-05-29 18:04:43 (Show Source): You can put this solution on YOUR website! x*-1=-3/89*-1 -x=3/89

Equations/455316: 10p-4(2p-5)+4 1 solutions Answer 312589 by rfer(12662)   on 2011-05-29 18:00:08 (Show Source): You can put this solution on YOUR website! 10p-8p+20+4= 2p+24

Problems-with-consecutive-odd-even-integers/455243: The product of two consecutive numbers is 156. Find the numbers. 1 solutions Answer 312583 by rfer(12662)   on 2011-05-29 17:00:21 (Show Source): You can put this solution on YOUR website! 12*13=156

Evaluation_Word_Problems/455247: Two numbers have a difference of 5. They mulitply to 84. Find the numbers. 1 solutions Answer 312582 by rfer(12662)   on 2011-05-29 16:57:44 (Show Source): You can put this solution on YOUR website! 7*12-84 12-7=5

Angles/455298: the hypotenuse of a right triangle is 5 and the area is 6. what is the base and height of the triangle? 1 solutions Answer 312580 by rfer(12662)   on 2011-05-29 16:53:59 (Show Source): You can put this solution on YOUR website! This is a 3, 4, 5 triangle A=(bh)/2 A=(3*4)/2 A=6 sq units

expressions/455278: Evaluate (4x+4)(7x-3) 1 solutions Answer 312579 by rfer(12662)   on 2011-05-29 16:50:31 (Show Source): You can put this solution on YOUR website! 28x^2-12x+28x-12 28x^2+16x-12

Numbers_Word_Problems/455290: A used car that. Is three years old is selling for $150 more than half its original price. If the car now sells for 2,750$ what did it cost three years ago when it was brand new?? 1 solutions Answer 312577 by rfer(12662)   on 2011-05-29 16:37:18 (Show Source): You can put this solution on YOUR website! (2750-150)/0.5=$5200

Graphs/455238: I need help to solve and graph this. Please help. 5-4x>17 and 6x-4>44 The first ">" should be underlined in the equation. 1 solutions Answer 312568 by rfer(12662)   on 2011-05-29 15:21:59 (Show Source): You can put this solution on YOUR website! -4x=>12 x=<-3 solid circle on -3 with arrow to the left --------------- 6x>48 x>8 circle around +8 with arrow to the right

Volume/455187: how much fluid is in a tube thats 4 inch diam and 16 inch long ? 1 solutions Answer 312567 by rfer(12662)   on 2011-05-29 15:08:05 (Show Source): You can put this solution on YOUR website! V=3.14*2^2*16 V=201 cu in

Polynomials-and-rational-expressions/455249: Essay question: show all work. Find the difference: (-8x2 – 8x – 4) – (-2x2 – 7x + 3) 1 solutions Answer 312565 by rfer(12662)   on 2011-05-29 15:05:45 (Show Source): You can put this solution on YOUR website! -8x^2-8x-4+2x^2+7x-3= -6x^2-x-7

Inequalities/455183: -2x + 4 > 12 1 solutions Answer 312564 by rfer(12662)   on 2011-05-29 15:03:00 (Show Source): You can put this solution on YOUR website! -2x>8 x<-4

Inequalities/455184: -4(x – 2) < 3 ( x + 2) 1 solutions Answer 312563 by rfer(12662)   on 2011-05-29 15:02:08 (Show Source): You can put this solution on YOUR website! -4x+8<3x+6 -7x<-2 x>2/7

Inequalities/455182: 5(x – 3) > 4(x – 2) 1 solutions Answer 312561 by rfer(12662)   on 2011-05-29 15:00:09 (Show Source): You can put this solution on YOUR website! 5x-15>4x-8 x>7

Evaluation_Word_Problems/455245: Two numbers add to 20 and multiply to 96. Find the numbers. 1 solutions Answer 312560 by rfer(12662)   on 2011-05-29 14:54:07 (Show Source): You can put this solution on YOUR website! 8*12=96 8+12=20

Inequalities/455160: Find the slope if it exists (3,4) and (10,9) 1 solutions Answer 312551 by rfer(12662)   on 2011-05-29 13:06:49 (Show Source): You can put this solution on YOUR website! m=(9-4)/(10-3) m=5/7

Inequalities/455162: if an electronic firm finds that 4% of its resistors are defective how many resistors do they have to make to deliver 5000 resistors/? 1 solutions Answer 312550 by rfer(12662)   on 2011-05-29 13:05:16 (Show Source): You can put this solution on YOUR website! 5000*1.04=5200

Equations/455191: 3x=4x-5 1 solutions Answer 312549 by rfer(12662)   on 2011-05-29 13:03:12 (Show Source): You can put this solution on YOUR website! 3x-4x=-5 x=5

Graphs/455195: 3x-4y=60 find the y intercept and the x intercept for the equation. what is the y intercept? type an ordered pair. What is the x intercept? type an ordered pair. 1 solutions Answer 312547 by rfer(12662)   on 2011-05-29 13:00:38 (Show Source): You can put this solution on YOUR website! x int=(20,0) y int=(0,-15)

Polynomials-and-rational-expressions/455139: 3. In 2002, Home Depot’s sales amounted to $58,200,000,000. In 2006, its sales were $90,800,000,000. a. Write Home Depot’s 2002 sales and 2006 sales in scientific notation. You can find the percent of growth in Home Depot’s sales from 2002 to 2006 by following these steps: • Find the increase in sales from 2002 to 2006. • Find what percent that increase is of the 2002 sales. b. What was the percent growth in Home Depot’s sales from 2002 to 2006? Do all your work by using scientific notation. The Home Depot, Inc. (2007, March 29). 2006 Annual Report. Retrieved from http://www6.homedepot.com/annualreport/index.html 1 solutions Answer 312480 by rfer(12662)   on 2011-05-28 22:17:54 (Show Source): You can put this solution on YOUR website! 2002 5.82x10^10 2006 9.08x10^10 9.08-5.82=3.26x10^10 3.26/5.82=0.56=56%

Inequalities/455095: i am having trouble with solving rational inequalities. especially ones like this: x+1/3 - x+1/x+2 = 0 1 solutions Answer 312479 by rfer(12662)   on 2011-05-28 22:12:52 (Show Source): You can put this solution on YOUR website! x and -x cancel 1/3+1/x+2=0 1/x=-2 1/3 1/x=-7/3 -7x=3 x=-3/7

Graphs/455123: Please help me with this problem: Find the slope and the y-intercept of the line 9x-4y=12 What is the slope? What is the y-intercept? Thank you so very much. 1 solutions Answer 312476 by rfer(12662)   on 2011-05-28 22:03:00 (Show Source): You can put this solution on YOUR website! put in y intercept form y=mx+b -4y=-9x+12 y=9/4x-3 slope m=9/4 y int=-3

Exponents-negative-and-fractional/455125: What is 49/5 + 16/5 - 4/5 = I would like to know how this problem is solved? 1 solutions Answer 312475 by rfer(12662)   on 2011-05-28 22:00:24 (Show Source): You can put this solution on YOUR website! you already have a common denominator =61/5=12 1/5

Graphs/455127: Find the intercepts and then use them to graph the equation. 6x+5y=30 Use the intercepts when drawing the graph line. If only one intercept exists, use it and another point to draw the line. I am so appreciative for your help. 1 solutions Answer 312473 by rfer(12662)   on 2011-05-28 21:58:29 (Show Source): You can put this solution on YOUR website! x=5 (5,0) y=6 (0,6)

Coordinate-system/455118: Find an equation of the line containing the given pair of points..(-8,-8)(1,1). Y=??? 1 solutions Answer 312456 by rfer(12662)   on 2011-05-28 20:46:15 (Show Source): You can put this solution on YOUR website! m=(1--8)/(1--8) m=1 ----------- y=mx+b 1=-8+b b=9 ------------- y=x+9

Exponential-and-logarithmic-functions/455116: Divide 208r^10/8r^7 1 solutions Answer 312455 by rfer(12662)   on 2011-05-28 20:34:05 (Show Source): You can put this solution on YOUR website! divide the numbers and subtract the exponents 26r^3

Polynomials-and-rational-expressions/455115: Is this problem done correctly I would like someone to check Multiply: (t^2-0.2) (t^2+0.2) t^4 - 0.04 thank you, 1 solutions Answer 312454 by rfer(12662)   on 2011-05-28 20:32:44 (Show Source): You can put this solution on YOUR website! t^4+0.2t^2-0.2t^2-0.04 looks like you nailed it. Good job.

Exponents/455098: 4 - 3(8) + (6 x 6) 1 solutions Answer 312452 by rfer(12662)   on 2011-05-28 20:23:43 (Show Source): You can put this solution on YOUR website! 4-24+36=+16

Quadratic_Equations/455104: How do I find the vertex and line of symmetry with this equation? f(x)=4x^2 1 solutions Answer 312451 by rfer(12662)   on 2011-05-28 20:21:53 (Show Source): You can put this solution on YOUR website! vertex = (0,0) axis x=0

Quadratic_Equations/455107: How do I find the vertex and line of symmetry of f(x)=-3(x+2)^2? 1 solutions Answer 312449 by rfer(12662)   on 2011-05-28 20:18:48 (Show Source): You can put this solution on YOUR website! vertex =(-2,0) so axis is located at x=-2