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# Recent problems solved by 'rfer'

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 Inequalities/460069: What is the answer to this inequality 9x + 7 < 8x -2? show all the steps to get the answer.1 solutions Answer 315547 by rfer(12731)   on 2011-06-11 21:00:37 (Show Source): You can put this solution on YOUR website!9x-8x < -2-7 x < -9
 Equations/460064: 3x+5/9+2x-1/9=7/9 Could you show your steps please, thanks!1 solutions Answer 315546 by rfer(12731)   on 2011-06-11 20:59:20 (Show Source): You can put this solution on YOUR website!5x+4/9=7/9 5x=7/9-4/9 5x=3/9 x=(3/9)/5 x=3/9*1/5 x=3/45 x=1/15
 Travel_Word_Problems/460059: If I am driving 50 miles per hour how long would it take to get 74 miles? If I am driving 50 miles per hour how long would it take to get 44 miles?1 solutions Answer 315536 by rfer(12731)   on 2011-06-11 19:52:05 (Show Source): You can put this solution on YOUR website!74/55=1.35 hrs=1 hr 21 min 44/55=0.8 hrs=48 minutes
 Radicals/460036: square root of 20 plus the square root of 64 minus the square root of 1251 solutions Answer 315527 by rfer(12731)   on 2011-06-11 18:36:10 (Show Source): You can put this solution on YOUR website!4.47+8-11.18=1.29
 Sequences-and-series/460021: Identify the pattern and find the next term: 6, 1, 9, 5, 12, 9, 15,____ 1 solutions Answer 315524 by rfer(12731)   on 2011-06-11 18:34:11 (Show Source): You can put this solution on YOUR website!next term=13
 Graphs/460034: i need help with the following: Solve the inequality 2(3 - x) > 4 - 5x Thank You1 solutions Answer 315522 by rfer(12731)   on 2011-06-11 18:30:47 (Show Source): You can put this solution on YOUR website!6-2x > 4-5x 3x > -2 x > -2/3
 Graphs/460038: I am starting to remoldle my yard and I want to spend no less than \$6000 and no more tha \$10000. Write an inqualities for this1 solutions Answer 315519 by rfer(12731)   on 2011-06-11 18:27:35 (Show Source): You can put this solution on YOUR website!6000 =< x =< 10000
 Percentage-and-ratio-word-problems/460002: If \$35,600 was earned this year which was an increase of 14% over the previous year. What were the earnings last year?1 solutions Answer 315498 by rfer(12731)   on 2011-06-11 16:50:49 (Show Source): You can put this solution on YOUR website!35600/1.14=\$31,228.07
 Quadratic_Equations/460010: (3/2+1/3)+(7/6-3/4)1 solutions Answer 315497 by rfer(12731)   on 2011-06-11 16:47:06 (Show Source): You can put this solution on YOUR website!18/12+4/12+14/12-9/12=27/12=2 1/4
 Linear-equations/459978: find the x and y intercepts and graph the equation plotting the intercepts. please show all of your work. 5x -7y = -351 solutions Answer 315477 by rfer(12731)   on 2011-06-11 14:02:17 (Show Source): You can put this solution on YOUR website!y int=5 (0,5) x int=-7 (-7,0)
 Quadratic_Equations/459979: For the following equation state the value of the discriminant and then describe the nature of the solutions 19x^2 +4x-13=0. What is the value of the discriminant and does it have one real solution two real solutions or two imaginary solutions?1 solutions Answer 315474 by rfer(12731)   on 2011-06-11 13:59:50 (Show Source): You can put this solution on YOUR website!D=1004 under the radical two real solutions
 Percentage-and-ratio-word-problems/459857: if something was worth \$ 4.3 but is now worth \$ 33., what is the percent increase?1 solutions Answer 315473 by rfer(12731)   on 2011-06-11 13:55:21 (Show Source): You can put this solution on YOUR website!33-4.3=28.7 28.7/4.3=6.67=667% increase
 Money_Word_Problems/459970: An education loan of \$8400 for ten years is to be repaid in monthly installments of \$122.50. What is the annual of this loan, computed as simple interest? 1 solutions Answer 315472 by rfer(12731)   on 2011-06-11 13:53:03 (Show Source): You can put this solution on YOUR website!122.50*120=14700 14700-8400=6300 6300/12=525 per yr 525/8400=0.0625 =6.25% interest per yr
 Linear-equations/459977: write the slope-intercept for the line with slope -1/4 and y-intercept (0, -2) and graph the line. please show all work.1 solutions Answer 315471 by rfer(12731)   on 2011-06-11 13:49:25 (Show Source): You can put this solution on YOUR website!y=-1/4x-2
 Linear-equations/459980: find the slope and y-intercept of the line in the given equation y = -2/7 x -31 solutions Answer 315470 by rfer(12731)   on 2011-06-11 13:48:19 (Show Source): You can put this solution on YOUR website!slope m=-2/7 y int b=-3 (0,-3)
 Travel_Word_Problems/459983: two friends leave 4.4 mi apart along the same road. if they walk toward eachother at rates that differ by 1/2 mph and meet 48 min later, how fast is each person walking?1 solutions Answer 315469 by rfer(12731)   on 2011-06-11 13:47:03 (Show Source): You can put this solution on YOUR website!x+x+.5=4.4 2x=3.9 x=1.95 x+.5=2.45 both in 48 minutes --------------- 1.95/0.8=2.44 mph 2.45/0.8=3 mph
 Equations/459872: Find the coordinates of the y-intercept and x-intercept, in that order. 4y-7=3x 1 solutions Answer 315462 by rfer(12731)   on 2011-06-11 13:05:03 (Show Source): You can put this solution on YOUR website!4y-7=3x 4y=3x+7 y=3/4x+7/4 ----- y int =7/4 (0,1 3/4) ------------ y=3/4x+7/4 3/4x=-7/4 x=-7/4*4/3 x=-28/12 x=-2 1/3 x int =-2 1/3 (-2 1/3,0)
 Equations/459969: During one year, the Hills' real estate bill included \$413 for miscellaneous services. Of this amount, 8% went to the local homeless shelter. How much money did the homeless shelter receive? show work please. 1 solutions Answer 315461 by rfer(12731)   on 2011-06-11 12:59:31 (Show Source): You can put this solution on YOUR website!413*0.08=\$33.04
 Equations/459873: Graph the equation, identify the y-intercept. y=2x-51 solutions Answer 315459 by rfer(12731)   on 2011-06-11 12:58:19 (Show Source): You can put this solution on YOUR website!y int = -5 (0,-5) x int = 2.5 (2.5,0)
 Equations/459874: Find the intercepts of each equation. Then graph. x-2y=61 solutions Answer 315458 by rfer(12731)   on 2011-06-11 12:56:12 (Show Source): You can put this solution on YOUR website!x-2y=6 0-2y=6 y=-3 (0,-3) ------------ x-2*0=6 x=6 (6,0)
 Geometry_Word_Problems/459881: If a right circular cylindrical vessel is one-quarter full, and you added seven liters of liquid that made the vessel three-fifths full, what is the total capacity of the vessel in liters?1 solutions Answer 315456 by rfer(12731)   on 2011-06-11 12:53:07 (Show Source): You can put this solution on YOUR website!3/5-1/4= 12/20-5/20=7/20 7/20=7 liters 7/(7/20)=x 7*20/7=20 liters
 Linear-equations/459925: 1.Write an inequality to describe a number less than or equal to -2 2.Write an inequality to describe the graph -1,2 3.Write an inequality to describe the graph +4 1 solutions Answer 315455 by rfer(12731)   on 2011-06-11 12:49:00 (Show Source): You can put this solution on YOUR website!1) x =< -2 2) -1 < x < 2
 Linear-equations/459961: Write a point-slope equation for the line with the given slope that contains the given point m= -3: (-2, -5). please show work. 1 solutions Answer 315454 by rfer(12731)   on 2011-06-11 12:45:30 (Show Source): You can put this solution on YOUR website!y=mx+b -5=-3*-2+b -5=6+b b=-11 -------------- y=-3x-11
 Numbers_Word_Problems/459934: the diffrrence between two numbers is 25.the smaller number is 1/6th of the larger number. what is the value of the smaller number1 solutions Answer 315452 by rfer(12731)   on 2011-06-11 12:43:12 (Show Source): You can put this solution on YOUR website!x-1/6x=25 5/6x=25 x=25*6/5 x=30 1/6x=5
 Graphs/459931: I'm 46 and trying to refresh my algebra. How would you graph the equation x-y=6. 1 solutions Answer 315450 by rfer(12731)   on 2011-06-11 12:41:01 (Show Source): You can put this solution on YOUR website!make an input/output table find at least three points. 2-y=6 -y=4 y=-4 (1,-4) ------------- keep going
 Graphs/459959: Hi, could you tell me how to find the coordinates of points on the graph in (x, y) form?1 solutions Answer 315449 by rfer(12731)   on 2011-06-11 12:39:05 (Show Source): You can put this solution on YOUR website!post a problem to look at.
 Equations/459930: I'm 46 and trying to refresh my algebra skills. How would I write an equation for the line going through the points (3,2) and (-2,4) Thanks1 solutions Answer 315448 by rfer(12731)   on 2011-06-11 12:38:05 (Show Source): You can put this solution on YOUR website!first find the slope m=(4-2)/(-2-3) m=2/-5 m=-2/5 ---------------- now slove for y intercept. y=mx+b 2=-2/5*3+b 2=-6/5+b 2+6/5=b b=16/5 b=3 1/5 --------------- y=-2/5x+3 1/5
 Proportions/459957: solve for the unknown in the proportion. 7/12=m/241 solutions Answer 315447 by rfer(12731)   on 2011-06-11 12:29:55 (Show Source): You can put this solution on YOUR website!12*m=7*24 12m=168 m=14
 Graphs/459932: I'm 46 years old and am trying to refresh my algebra. How would I graph the function y=f(x)=x^2 1 solutions Answer 315445 by rfer(12731)   on 2011-06-11 12:28:25 (Show Source): You can put this solution on YOUR website!make an input/output table ------------------------ y and f(x) are the same thing, y is a funtion of x. ------------ y=2^2 y=4 (2,4) --------------- y=3^2 y=9 (3,9) ------------ y=4^2 y=16 (4,16) -------------------- your graph will be curved use some negative values for x to develope the porabola
 Evaluation_Word_Problems/459936: I;m 46 and refreshing my algebra, help??? please Jim has a total of 50 coins. Some are nickels and some are dimes. Altogether he has 4.15. How many dimes does he have and how many nickels? Thanks 1 solutions Answer 315442 by rfer(12731)   on 2011-06-11 12:21:58 (Show Source): You can put this solution on YOUR website!n+d=50 d=50-n 0.05n+0.1d=4.15 0.05n +0.1(50-n)=4.15 0.05n+5-0.1n=4.15 -0.05n=-0.85 n=17 nickles 50-17=33 dimes
 Evaluation_Word_Problems/459933: I'm 46 and trying to refresh my skills How would I solve the following: The amount of money that a salesperson makes varies directly as the total amount of sales made. If the salesperson receives 7,500 for selling a house for 120,000, how much will he make if he sells a house for 150,000?1 solutions Answer 315440 by rfer(12731)   on 2011-06-11 12:16:56 (Show Source): You can put this solution on YOUR website!75/1200=x/1500 1200x=112500 x=93.75 x=\$9,375 You can carry the zeros through if you like.