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# Recent problems solved by 'rfer'

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 Quadratic_Equations/235987: How would you write the translation of 16 increased by b1 solutions Answer 173766 by rfer(12647)   on 2009-11-06 18:38:22 (Show Source): You can put this solution on YOUR website!16+b
 Numbers_Word_Problems/236001: Sam Mathius invested part of his 10,000 bonus in a fund that paid an 11% Profit and invested the rest in stock that suffered a 4% loss. Findthe amount of each investment if his overall net profit was \$650. Please Help1 solutions Answer 173764 by rfer(12647)   on 2009-11-06 18:36:47 (Show Source): You can put this solution on YOUR website!.11x+.04(10000-x)=650 .11x+400-.04x=650 .07x=250 x=\$3571.43 at 11% \$6428.57 at 4%
 Geometry_Word_Problems/236005: A customer purchased a car and financed &16,000. The customer borrowed part of the money from a bank charging 10% annual interest and the rest from a credit union at 8% annual interest. If the total interest for the year was \$1390, how much was borrowed from the bank and how much was borrowed from the credit union?1 solutions Answer 173763 by rfer(12647)   on 2009-11-06 18:32:28 (Show Source): You can put this solution on YOUR website!.1x+.08(16000-x)=1390 .1x+1280-.08x=1390 .02x=110 x=\$5500 at 10% \$10500 at 8%
 Travel_Word_Problems/235947: the distance up a hill and down the other side is the same. A car averages 30 mph up the hill and 60 mph down the other side. What is the average speed of the car overall.1 solutions Answer 173750 by rfer(12647)   on 2009-11-06 16:53:17 (Show Source): You can put this solution on YOUR website!(30+60)/2=45 mph average
 Distributive-associative-commutative-properties/235966: what is the product to this question: (5y-2)(3y+4)1 solutions Answer 173749 by rfer(12647)   on 2009-11-06 16:51:56 (Show Source): You can put this solution on YOUR website!(5y-2)(3y+4) 15y^2+20y-6y-8 15^2+14y-8
 Angles/235979: The diffrence of the measurements of two supplementary angles is 50 degrees. what is the measurement of each angle.1 solutions Answer 173743 by rfer(12647)   on 2009-11-06 16:39:21 (Show Source): You can put this solution on YOUR website!x+x+50=180 2x=130 x=65 degrees x+50=115 degrees
 Equations/235916: hello my name is anthony and who ever reponds back to this it would be great cuz i am have trouble with algerbra equations with varibles on each sides and so i am new at this and so if you could tell me the steps and explain to me the best way you can that would be great 5x-3-=3x+71 solutions Answer 173690 by rfer(12647)   on 2009-11-06 12:04:52 (Show Source): You can put this solution on YOUR website!5x-3=3x+7 subtract 3x from both sides 5x-3x-3=3x-3x+7 2x-3=7 add 3 to both sides 2x-3+3=7+3 2x=10 divide by 2 x=5
 Rectangles/235919: the perimeter of the rectangle is 186 inches. the length exceeds with 43 inches, what is the length and width?1 solutions Answer 173689 by rfer(12647)   on 2009-11-06 12:02:02 (Show Source): You can put this solution on YOUR website!P=2w+2L 186=2x+2(x+43) 186=2x+2x+86 4x=100 x=25in x+43=68in
 Linear_Equations_And_Systems_Word_Problems/235909: Celsius to Fahrenheit. Water freezes at 0 degrees C or 32 degrees F and boils at 100 degrees C or 212 degrees F. There is a linear equation that expresses the number of degrees Fahrenheit (F) in terms of the number of degrees Celsius (C). Find the equation and find the Fahrenheit temperature when the Celsius temperature is 45 degrees.1 solutions Answer 173688 by rfer(12647)   on 2009-11-06 11:59:09 (Show Source): You can put this solution on YOUR website!F=9/5*C+32 F=9/5*45+32 F=81+32 F=113 degrees F
 Linear-equations/235813: find the slope and y- intercept 2x=7-y1 solutions Answer 173685 by rfer(12647)   on 2009-11-06 11:35:21 (Show Source): You can put this solution on YOUR website!2x=7-y -y=2x-7 y=-2x+7 ------------ y=mx+b m=slope=-2 b=y int=7 (0,7)
 Equations/235810: can you help me factor p^2-10p+241 solutions Answer 173683 by rfer(12647)   on 2009-11-06 11:32:25 (Show Source): You can put this solution on YOUR website!(p-4)(p-6)
 Quadratic_Equations/235834: I am having a tough time with these problems on this one I must use the discriminate to determine the number of solutions of the quadratic equation and whether the solutions are real or complex. It is not necessary to find the roots just determine the number of types of solutions. 4/3x^2 - 2x + 3/4 =01 solutions Answer 173682 by rfer(12647)   on 2009-11-06 11:28:33 (Show Source): You can put this solution on YOUR website!the discriminant b^2-4ac ------------------ 4/3x^2-2x+3/4=0 a=4/3, b=-2, c=3/4 ------------------ -2^2-4(4/3)(3/4) ---------------- Does that help? Bob
 Linear-equations/235910: 3(-4m+7)-(5m-6)1 solutions Answer 173680 by rfer(12647)   on 2009-11-06 11:22:32 (Show Source): You can put this solution on YOUR website!3(-4m+7)-(5m-6) -12m+21-5m+6 -17m+27
 logarithm/235819: a loan of \$12,000 is made at 14%interest compounded annually,after t years the amount due,A is given by the function A(t)=12,000(1.14)^t find the doubling time.1 solutions Answer 173679 by rfer(12647)   on 2009-11-06 11:20:11 (Show Source): You can put this solution on YOUR website!n=in2/in(1+i) n=.301/.0569 n=5.29 yrs
 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(12647)   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(12647)   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-81 solutions Answer 173605 by rfer(12647)   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(12647)   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(12647)   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(12647)   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 line1 solutions Answer 173599 by rfer(12647)   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 -x1 solutions Answer 173500 by rfer(12647)   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 251 solutions Answer 173498 by rfer(12647)   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(12647)   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(12647)   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 you1 solutions Answer 173493 by rfer(12647)   on 2009-11-05 17:46:14 (Show Source): You can put this solution on YOUR website!4x+7x=11x