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# Recent problems solved by 'richwmiller'

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 Miscellaneous_Word_Problems/732137: a store mixes Kentucky bluegrass worth \$11 per pound and ryegrass worth \$15 per pound. the mixture is to sell for \$12 per pound. Find how much of each should be used to make a 540-pound mixture.1 solutions Answer 447559 by richwmiller(9135)   on 2013-03-30 23:43:47 (Show Source): You can put this solution on YOUR website!b+r=540, 11b+15r=540*12 b = 405, r = 135
 Length-and-distance/732134: What is the distance between the points (7, –6) and (–5, 3)? I tried the distance formula but i dont no what i did wrong .1 solutions Answer 447558 by richwmiller(9135)   on 2013-03-30 23:38:43 (Show Source): You can put this solution on YOUR website!what answer did you get? What makes you think it is wrong?
 Quadratic_Equations/731868: Hello I'm kind of confused on how to solve this; What are the solutions to the equation I don't know how to turn this into a quadratic equation to use with the quadratic formula. Thanks.1 solutions Answer 447323 by richwmiller(9135)   on 2013-03-29 19:19:56 (Show Source): You can put this solution on YOUR website!multiply by x^2 rearrange 4/5 (x-3/2)^2 = 1 (x-3/2)^2 = 5/4 x = 1/2 (3+sqrt(5)) x = 1/2 (3-sqrt(5))
 Age_Word_Problems/731768: a father is 5 times as old as his son, his son is 6 years old, after how many years will the father be 4 times as old as his son?1 solutions Answer 447284 by richwmiller(9135)   on 2013-03-29 12:53:09 (Show Source): You can put this solution on YOUR website!5s=f, s=6, 5*6=30=f f+x=4(s+x) 30+x=4*(6+x) 30+x=24+4x 6=3x 2=x check 30+2=4*(6+2) 32=4*8 32=32 ok
 Age_Word_Problems/731751: My granddaughter is about as many days as my daughter is weeks, and my granddaughter is as many months as I am years. My granddaughter, my daughter, and my age are equal to a century. What is my age in years?1 solutions Answer 447279 by richwmiller(9135)   on 2013-03-29 12:33:07 (Show Source): You can put this solution on YOUR website!g+d+m=100, 365g=52d, 12g=m d = 36500/1041, g = 5200/1041, m = 20800/347=62400/1041 d=35.0624399615754, g=4.99519692603266, m=59.9423631123919 d=35 g=5 m=60 check 5+35+60=100 52*d=1820 1820/5=364 1825/365=5 5*12=60 ok the key is "about as many days"
 Money_Word_Problems/731770: You have a coupon worth \$18 off the purchase of a scientific calculator. At the same time, the calculator is offered with the discount of 15% but no other discount may be applied. For what priced the calculator do you pay the same amount for each discount?1 solutions Answer 447271 by richwmiller(9135)   on 2013-03-29 12:08:33 (Show Source): You can put this solution on YOUR website!.15X=18 x=18/.15 x=120 .15*120=18 15 % discount on \$120 is \$18
 Permutations/731274: In how many ways can you choose 2 side dishes from 15 entrees?1 solutions Answer 447075 by richwmiller(9135)   on 2013-03-27 20:13:21 (Show Source): You can put this solution on YOUR website!That depends on how you look at it. Have you already taken your entree? or are all of the 15 available for side dishes first side dish has 15 choices can you repeat the the side dishes? no repeat then there are 14 choices for the secind 15*14=210 choices for 2 side dishes if all 15 are available for the first and 14 (no repeats) are available for the second
 Geometry_Word_Problems/731276: "The perimeter of a rectangle is 36 m. The area is 65 m^2. Find the dimensions of the rectangle." I'm supposed to use the Quadratic formula in this somehow, but I don't really understand how I get A, B, and C from this. I tried to do it, and I confused myself halfway through it. Thank you for your help!1 solutions Answer 447067 by richwmiller(9135)   on 2013-03-27 19:54:47 (Show Source): You can put this solution on YOUR website!2l+2w=36 l=65/w 2*(65/w)+2w=36 65/w+w-36=0 65+w^2-36w=0 w^2-18w+65=0 factor (w-5)*(w-13)=0 w = 5 width is shorter than length l=13
 Miscellaneous_Word_Problems/731282: If a 32ft rope is cut into two sections with one section 7 times as long as the other section, how long is the shorter piece?1 solutions Answer 447065 by richwmiller(9135)   on 2013-03-27 19:44:27 (Show Source): You can put this solution on YOUR website!short 4 and long 28
 test/731281: If John was traveling 42 miles in 312 hours. How fast was he riding?1 solutions Answer 447063 by richwmiller(9135)   on 2013-03-27 19:38:29 (Show Source): You can put this solution on YOUR website!0.13461538461538461538461538461538 mph
 Mixture_Word_Problems/730992: Please,i will like to know how mixing problem involving tank 1 and tank 2 is all about1 solutions Answer 447023 by richwmiller(9135)   on 2013-03-27 14:35:15 (Show Source): You can put this solution on YOUR website!It is about filling and emptying two tanks
 Mixture_Word_Problems/731178: How much 3% peroxide do you add to one litre water to make a 30% solution peroxide.1 solutions Answer 447020 by richwmiller(9135)   on 2013-03-27 14:20:20 (Show Source): You can put this solution on YOUR website!I think you have the numbers confused.
 Linear_Equations_And_Systems_Word_Problems/731095: How do you write 16 added to a number and the sum is doubled, the result 15 less than the number1 solutions Answer 447018 by richwmiller(9135)   on 2013-03-27 14:18:29 (Show Source): You can put this solution on YOUR website!2*(16+n)=n-15 32+2n=n-15 subtract n from both sides subtract 32 from both sides n=-47
 Linear_Equations_And_Systems_Word_Problems/731174: In the equations below, a is the price, in dollars, of an adult ticket to a school play, and s is the price of a student ticket. 5a + 3s = 42 3a + s = 22 What is the price of an adult ticket to the play? A. \$4 B. \$5 C. \$6 D. \$10 Padgett Math 1 (Padgettmath1) 21 solutions Answer 447017 by richwmiller(9135)   on 2013-03-27 14:12:47 (Show Source): You can put this solution on YOUR website!a=6 s=4 That would be C. \$6
 Rate-of-work-word-problems/731045: Please help me solve this equation: It takes 4 men 16 hours to pave a footpath. How long would it take 3 men to pave the same area?1 solutions Answer 447015 by richwmiller(9135)   on 2013-03-27 14:03:01 (Show Source): You can put this solution on YOUR website!There is no equation to solve. It is a rate of work word problem. 4*16=64 man hours are needed It is assumed in this type problem that everyone works at the same rate. 64/3=21 1/3 hours for 3 men
 Rate-of-work-word-problems/731168: 4 people can paint 5 walls in 39 minutes. How many minutes will it take for 6 people to paint 9 walls?1 solutions Answer 447009 by richwmiller(9135)   on 2013-03-27 13:46:10 (Show Source): You can put this solution on YOUR website!4*39=156 man minutes for 5 walls 156/5 man minutes per wall 156/5*9/6= 46.8 minutes
 Travel_Word_Problems/731136: If the distance a train travels varies directly with the time the train travel,and if the train travels 51 miles in 45 minutes ,how far does the train travel in 2 hours 1 solutions Answer 447006 by richwmiller(9135)   on 2013-03-27 13:25:13 (Show Source): You can put this solution on YOUR website!r*t=d r*3/4=51 r=51/3/4=51*4/3=68 2*68=136 miles in 2 hours
 Travel_Word_Problems/731146: My car gets 41 MPG, and i'm traveling 1,666 miles.Would it be cheaper to drive or fly? If a plane ticket is four hundred dollars.1 solutions Answer 447005 by richwmiller(9135)   on 2013-03-27 13:13:54 (Show Source): You can put this solution on YOUR website!1666/41=40.63 gallons let's say at \$4.50 a gallon \$182.85 driving if you only consider gas and not the wear and tear on the car, oil etc
 Rate-of-work-word-problems/730748: Americo can mow a lawn in 20 minutes,while Brandon takes 30 minutes to mow the same lawn. How many minutes would it take the two people together to mow the lawn?1 solutions Answer 446951 by richwmiller(9135)   on 2013-03-26 22:32:29 (Show Source): You can put this solution on YOUR website!1/20+1/30=1/x x=12
 Rate-of-work-word-problems/730979: sally can paint a room in 3 hours white it takes steve 4 hours to paint the same room. How long would it take them to paint the room if they worked together?1 solutions Answer 446949 by richwmiller(9135)   on 2013-03-26 22:29:07 (Show Source): You can put this solution on YOUR website!x/3+x/4=1 or 1/3+1/4=1/x 4/12+3/12=1/x 7/12=1/x 12/7=x
 Finance/730990: If I may ask, what is the answer to this problem: A community bird-watching society makes and sells simple bird feeders to raise money for its conservation activities. The materials for each feeder cost \$4, and the society sells an average of 40 per week at a price of \$8 each. The society has been considering raising the price, so it conducts a survey and finds that for every dollar increase, it loses 2 sales per week. 1 solutions Answer 446947 by richwmiller(9135)   on 2013-03-26 22:22:18 (Show Source): You can put this solution on YOUR website!what is the question?
 Length-and-distance/730974: A ball is thrown upward from the top of a building. The ball's height above the ground after t seconds is given by the function: h (t) = -16t^2 + 48t + 32. a.) What is the initial height? b.) How high did the ball go? c.) When does the ball hit the ground?1 solutions Answer 446945 by richwmiller(9135)   on 2013-03-26 22:11:20 (Show Source): You can put this solution on YOUR website!a)32 set t to zero b)find the maximum 68 parabola focus | (3/2, 4351/64) vertex | (3/2, 68) semi-axis length | 1/64 = 0.015625 focal parameter | 1/32 = 0.03125 eccentricity | 1 directrix | y = 4353/64 c)set 0=-16t^2 + 48t + 32 t = 3.5616
 Quadratic_Equations/730817: Find solutions of the equation 4x^2+27x=401 solutions Answer 446857 by richwmiller(9135)   on 2013-03-26 16:19:58 (Show Source): You can put this solution on YOUR website!x = 5/4 x = -8 use complete the square or quadratic equation to solve
 decimal-numbers/730803: How to solve 4/25 into a mixed number as decimals1 solutions Answer 446854 by richwmiller(9135)   on 2013-03-26 16:03:57 (Show Source): You can put this solution on YOUR website!4/25=8/50=16/100=0.16
 Linear-equations/730677: how do yow write in y form ex: y-4x=61 solutions Answer 446810 by richwmiller(9135)   on 2013-03-26 13:28:04 (Show Source): You can put this solution on YOUR website!add 4x to both sides
 Linear-equations/730739: x-3y+3=0 I am supposed to put this into slope intercept form and then find three coordinates for (x,y). I THINK I am doing the math correctly, but I so far I have come up with THREE different solutions for (x,y). Also, when I go to graph this on my online homework, the answers are wrong. My tutor will not be here until five, and I really want to learn how to do this to the best of my ability so that my tutor and I can spend more time on the other things I am struggling with. Can you include the three correct points on a picture of a graph so I can see what it looks like? Any help is very much appreciated. Thank You. Sincerely, Tiff1 solutions Answer 446809 by richwmiller(9135)   on 2013-03-26 13:22:52 (Show Source): You can put this solution on YOUR website!There are an infinite number of solutions. You didn't tell us what you did nor give us your solutions,
 Travel_Word_Problems/730617: Simon walked at 50m/min and then rode his bike at 200m/min for the rest of the way.If it took 33 minutes to complete the whole journey of 3 km, for how long did he walk? 1 solutions Answer 446776 by richwmiller(9135)   on 2013-03-26 09:08:29 (Show Source): You can put this solution on YOUR website!W+B=3000, 50*w=W, 200b=B, We have more info than we need. We only need w+b=33, 50*w+200b=3000, b=9 min w=24 min
 Word_Problems_With_Coins/730188: Joe has 13 coins made up of quarters and half dollars, and their total value is \$6.00. How many quarters does he have?1 solutions Answer 446571 by richwmiller(9135)   on 2013-03-25 09:21:04 (Show Source): You can put this solution on YOUR website!q+h=13 50h+25q=600
 Percentage-and-ratio-word-problems/730207: if 26 students out of 50 students prefer maths to English, what is the percentage of students that prefer maths?1 solutions Answer 446568 by richwmiller(9135)   on 2013-03-25 09:18:37 (Show Source): You can put this solution on YOUR website!26/50=52/100 = 52%
 Reduction-of-unit-multipliers/730214: how to get the answer to this question. a*b=a+b/2+51 solutions Answer 446560 by richwmiller(9135)   on 2013-03-25 09:15:39 (Show Source): You can put this solution on YOUR website!where is the question?
 Probability-and-statistics/730224: in a fifty question true false examination a student must achieve twenty five correct answers required to pass. 1 solutions Answer 446554 by richwmiller(9135)   on 2013-03-25 09:10:00 (Show Source): You can put this solution on YOUR website!already asked