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# Recent problems solved by 'solver91311'

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 Functions/338320: (1,1) (2,3) (3,7) (4,15) (5,31) (6,63) (7,127) (8,255) (9,511) (10,1023) What is the equation?1 solutions Answer 242495 by solver91311(16868)   on 2010-09-02 18:22:29 (Show Source): You can put this solution on YOUR website! John My calculator said it, I believe it, that settles it
 Functions/338324: how do you solve y=21-2x while using an input-output table.DOMAIN=0,1,2,31 solutions Answer 242494 by solver91311(16868)   on 2010-09-02 18:20:05 (Show Source): You can put this solution on YOUR website! Take each of the domain values and substitute them for one at a time and calculate each of the corresponding values for John My calculator said it, I believe it, that settles it
 Miscellaneous_Word_Problems/338328: The office-jet printer can copy Sue's dissertation in 16 min. The Laser-jet printer can copy the same document in 8 min. If the two machines work together, how long would they take to copy the dissertation?1 solutions Answer 242493 by solver91311(16868)   on 2010-09-02 18:18:15 (Show Source): You can put this solution on YOUR website! I just answered this exact question not ten minutes ago. Here it is again if you missed it the first time. If A can do a job in x time periods, then A can do of the job in 1 time period. Likewise, if B can do the same job in y time periods, then B can do of the job in 1 time period. So, working together, they can do of the job in 1 time period. Therefore, they can do the whole job in: time periods. John My calculator said it, I believe it, that settles it
 Miscellaneous_Word_Problems/338275: The office-jet printer can copy Sue's dissertation in 16 min. The Laser-jet printer can copy the same document in 8 min. If the two machines work together, how long would they take to copy the dissertation?1 solutions Answer 242492 by solver91311(16868)   on 2010-09-02 18:04:00 (Show Source): You can put this solution on YOUR website! If A can do a job in x time periods, then A can do of the job in 1 time period. Likewise, if B can do the same job in y time periods, then B can do of the job in 1 time period. So, working together, they can do of the job in 1 time period. Therefore, they can do the whole job in: time periods. John My calculator said it, I believe it, that settles it
 Expressions-with-variables/338264: Can someone help define direct variations?1 solutions Answer 242490 by solver91311(16868)   on 2010-09-02 17:49:15 (Show Source): You can put this solution on YOUR website! Direct variation: A relationship between two quantities such that if one of the quantities increases, the other quantity also increases. John My calculator said it, I believe it, that settles it
 Length-and-distance/338314: If KL=4x-1,LM=2x-1, and KM=2x, what is the value of x?1 solutions Answer 242489 by solver91311(16868)   on 2010-09-02 17:45:21 (Show Source): You can put this solution on YOUR website! That depends. If the points K, L, and M are collinear and L is between K and M, then the measure of KL plus the measure of LM is equal to the measure of KM. Just set the sum of the first two expressions equal to the third and solve for . If they are in some other order, then it is the two short pieces add up to the long piece. If they are not collinear, you don't have enough information to solve the problem. This sort of thing is why the instructions for posting tell you to describe your problem completely so that we can understand it. John My calculator said it, I believe it, that settles it
 Numeric_Fractions/338279: Write the decimal equalivalent, using the bar notation for 7/18? I am at a loss on this one. Thank you Sandy1 solutions Answer 242486 by solver91311(16868)   on 2010-09-02 17:40:10 (Show Source): You can put this solution on YOUR website! Divide 7 by 18 on your calculator. You get 0.38888888888888888888888888888889, which really means that it is 0.38 followed by repeated 8s forever. Since writing that many digits is not only impractical but impossible, we have a shorthand notation. is only approximate (very, very close, but still approximate) But if you say which means zero point three followed by an infinity of eights, we now have a manageable and exact representation. If you have a decimal fraction that has a group of digits that repeat, you run the line over the entire group that repeats. For example: but we can write: Again, notice the assertion of exactness. John My calculator said it, I believe it, that settles it
 Travel_Word_Problems/338228: 1. if it takes john 900 seconds to run 1 mile then he is running at a rate of 4 mph. show work 2. Three consecutive odd counting numbers have the property that the sum of the largest and twice the smallest is 64. what is the middle number.1 solutions Answer 242434 by solver91311(16868)   on 2010-09-02 13:54:57 (Show Source): You can put this solution on YOUR website! Only one question per post. Which one do you want us to do? Don't write to me, repost. John My calculator said it, I believe it, that settles it
 Equations/338221: HI, please help me solve this. The answer is 16, but I keep getting 6. Thanks in advance. 2(t-1)/6 - 2 = t+2/6 I first multplied both sides by 6/1 and that left me with 2(t-1)-2=t+2 then distributed, 2t-2-2=t+2 then add 4 to both sides 2t=t+6 then subtract t from both sides t=6 Im doing something wrong in the first step i think.. 1 solutions Answer 242432 by solver91311(16868)   on 2010-09-02 13:49:54 (Show Source): You can put this solution on YOUR website! I'll fix your mistake and then you can take it from there. Multiplying by 6 was absolutely the correct thing to do. But you must multiply every term by the 6 -- not just the fractions. So: You take it from here. Write back if you are still having problems. John My calculator said it, I believe it, that settles it
 Triangles/338186: from the markings shown on the following triangle which of the following statements is true? It's a trinagle XYZ two dash marks bewteen xy and zy and a square box on top of y sorry that i dont have a picture1 solutions Answer 242427 by solver91311(16868)   on 2010-09-02 13:40:31 (Show Source): You can put this solution on YOUR website! In the first place you are going to have to give a much more detailed and accurate description of your diagram and then you need to provide "the following statements" that you were referring to. John My calculator said it, I believe it, that settles it
 Expressions-with-variables/338203: Rewrite as an equivalent exponential equation. Do not solve. log10 18 = 1.2553 1 solutions Answer 242416 by solver91311(16868)   on 2010-09-02 13:04:43 (Show Source): You can put this solution on YOUR website! Use the definition of logarithms. John My calculator said it, I believe it, that settles it
 logarithm/338135: Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Show your work. Use the resulting ordered pairs to plot the graph; submit the graph via the Dropbox. State the equation of the line asymptotic to the graph (if any).y=-5^x 1 solutions Answer 242409 by solver91311(16868)   on 2010-09-02 12:18:32 (Show Source): You can put this solution on YOUR website! Pick any three negative values that you like for and then substitute each of those values into the function. Use your calculator in each case to determine the value of the function for that input value of . Then, in each case, plot the resulting point represented by the ordered pair consisting of the selected value for and the calculated value of the function. Repeat the above process for and for three selected positive values for . Once you have all 7 points plotted, draw a smooth curve through the points. The graph should appear asymptotic to the -axis. John My calculator said it, I believe it, that settles it
 Radicals/338166: I need to find the steps to from (7√(2*2*3))/6 to 7/3 √3 I have been working on it for two days now. I just don't get it. 1 solutions Answer 242407 by solver91311(16868)   on 2010-09-02 12:11:53 (Show Source): You can put this solution on YOUR website! Two days is a very long time to be working on one radical simplification problem. What have you tried? What is your approach to the problem? John My calculator said it, I believe it, that settles it
 Mixture_Word_Problems/338179: I have been working on this for some time. Thank you for your help. There is 300 g. of 20% hydrochloric acid solution. He needs to drain some off and replace it with an 80% solution so as to obtain a 25% solution. How many grams must he drain and replace with the 80% solution? Again I thank you in advance for you help1 solutions Answer 242406 by solver91311(16868)   on 2010-09-02 12:10:15 (Show Source): You can put this solution on YOUR website! So if you have been working on this for some time, what have you managed to accomplish so far? What have you tried? John My calculator said it, I believe it, that settles it
 Quadratic_Equations/338172: How do you solve Tickets = -0.2x^2 + 12x +11? It is also in an application practice having 9 other questions1 solutions Answer 242405 by solver91311(16868)   on 2010-09-02 12:09:04 (Show Source): You can put this solution on YOUR website! Solve it for what? What does represent? What is the exact question you are trying to answer? John My calculator said it, I believe it, that settles it
 expressions/338110: I also need help with these math problems from pages 683- 684 40. 7 + (-9) + (-5) + 6 48. 1/3 + (- 5/6) + (-1/2) 58. Evaluate each of the following expression | -27 + 14| 66. Label each of the following statements as true or false |-8|+|3|=|-8+3| Section 9.3 page 689 44. - 1/2 - (-5/8) 48. - 3.4 - (-7.6) 1 solutions Answer 242404 by solver91311(16868)   on 2010-09-02 12:06:15 (Show Source): You can put this solution on YOUR website! Is there some part of "One question per post" that you are having difficulty understanding? We can't begin to teach you any mathematics until we are confident that you can comprehend simple instructions. John My calculator said it, I believe it, that settles it
 Radicals/338173: z=sqrt(x^2+y^2) I have no idea of how to solve this. Could someone please explain to me how to work this types of radical equation out, so I can try on my own. Thank you.1 solutions Answer 242401 by solver91311(16868)   on 2010-09-02 11:56:08 (Show Source): You can put this solution on YOUR website! That's because you can't "solve" it. There is nothing to work out. What is your text or assignment sheet asking you to do with the equation? John My calculator said it, I believe it, that settles it