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solver91311 answered: 16856 problems
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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=0,1,2,3 1 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 Sandy 1 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 picture 1 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 help 1 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 questions 1 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

Travel_Word_Problems/338165: If Ben runs 7 mph and Noah runs 5 mph how long will it take for the boys to run 1/5 mile? 1 solutions Answer 242399 by solver91311(16868)   on 2010-09-02 11:43:09 (Show Source): You can put this solution on YOUR website! Your question doesn't make a great deal of sense. How long will it take the boys (emphasis on the plural) to run 1/5 mile -- simple: as long as it takes the slower one to run 1/5 of a mile. If both of the boys are going to run 1/5 of a mile, it doesn't matter how long it takes Ben to go that distance, because the overall elapsed time is going to be paced by Noah. On the other hand, if you meant that the boys are going to run 1/5 mile in tandem, as in a relay race situation, you didn't bother to share what portion of the distance Ben is going to cover and which portion Noah is going to cover. One possibility is that they will split the distance equally, but nothing in your problem statement would allow such an assumption as being more likely than any other division of the labor. And please don't write back to tell me "that's all it says in my assignment sheet/book/whatever" I don't care about that. If what you wrote is all the information you have, then you need to go and get more information from your instructor or from further reading in your text. John My calculator said it, I believe it, that settles it

Travel_Word_Problems/338136: Dan and Karen who live 10 miles apart meet at a cafe that is directly north of Dan's house and directly east of Karen's house. If the cafe is 2 miles closer to Dan's house than to Karen's house, how many miles is the cafe from Karen's house? (A)6 (B)7 (C)8 (D)9 (E)10 Could please solution to the above problem. Thanks 1 solutions Answer 242397 by solver91311(16868)   on 2010-09-02 11:30:26 (Show Source): You can put this solution on YOUR website! The first thing to do is draw yourself a sketch. You end up with a right triangle with the line from Karen's house to Dan's house being the hypotenuse and the restaurant at the right angle vertex. Then there are two ways to go about this. You can do it the easy way in your head if you say the hypotenuse is 10 and if the triangle were a 3-4-5 right triangle, the two legs would be 6 and 8. And since 6 and 8 differ by 2, Karen's house is 8 miles from the restaurant. Or you can do it the hard way. Let represent the distance from Karen's house to the restaurant. Then the distance from Dan's house to the restaurant is Then Pythagoras: You can take it from here. Toss the extraneous negative root. John My calculator said it, I believe it, that settles it

Miscellaneous_Word_Problems/338161: If a fraction simplifies to 1,what,if anything can you conclude about its numerator and denominator? A.) the numerator can be anything, the denominator is 1. B.) the numerator is 1, the denominator can be anything. C.) the numerator & denominator are equal. D.) the numerator is smaller than the denominator. 1 solutions Answer 242395 by solver91311(16868)   on 2010-09-02 11:13:11 (Show Source): You can put this solution on YOUR website! John My calculator said it, I believe it, that settles it

Square-cubic-other-roots/338158: Square root of 3x times square root of 12x simplify answer. give exact answer using radicals as needed 1 solutions Answer 242394 by solver91311(16868)   on 2010-09-02 11:11:42 (Show Source): You can put this solution on YOUR website! Use: John My calculator said it, I believe it, that settles it

absolute-value/338148: Please assist me in trying to solve each system by the addition method. 3x + 2y = 3 4x 3y = -13 Thank you! 1 solutions Answer 242393 by solver91311(16868)   on 2010-09-02 11:07:12 (Show Source): You can put this solution on YOUR website! You left a sign out of your second equation. Is it: or John My calculator said it, I believe it, that settles it

Geometry_Word_Problems/338020: Farmer Tariq's rectangular field is 40 meters long. If the area of the field is 1,000 square meters, how wide, in meters, is the field? 1 solutions Answer 242338 by solver91311(16868)   on 2010-09-01 22:01:24 (Show Source): You can put this solution on YOUR website! Divide 1000 by 40 John My calculator said it, I believe it, that settles it

Travel_Word_Problems/338016: a car accelerates uniformly from rest to a speed of 23.3 km/h in 8.4s. what is the distance it travels during this time? 1 solutions Answer 242336 by solver91311(16868)   on 2010-09-01 21:59:45 (Show Source): You can put this solution on YOUR website! Instantaneous velocity as a function of time is Here, initial velocity, , sec, and m/sec Solve for Then, distance traveled is given by: , , , and is what you calculated above. John My calculator said it, I believe it, that settles it

Complex_Numbers/338019: x-5 ___ +1=b solve for x a 1 solutions Answer 242323 by solver91311(16868)   on 2010-09-01 21:48:31 (Show Source): You can put this solution on YOUR website! Multiply both sides by . Add to both sides. Add to both sides. John My calculator said it, I believe it, that settles it

Geometric_formulas/338018: M is the midpoint of segment LN. I'm supposed to find x and the length of each segment...I don't know how to solve this-but i already know how midpoint works. Please explain step by step!!! Thanks! LM=(x+16)/5 MN=(x-4)/3 1 solutions Answer 242321 by solver91311(16868)   on 2010-09-01 21:46:37 (Show Source): You can put this solution on YOUR website! If M is the midpoint, then the two line segments must be equal in measure. So set the two fractions equal to each other and solve for John My calculator said it, I believe it, that settles it

Angles/337997: Draw the angle sin(-pi/2) using a ray through the origin, and determine whether the sine, cosine, and tangent of this angle are positive, negative, zero, or undefined. 1 solutions Answer 242318 by solver91311(16868)   on 2010-09-01 21:44:10 (Show Source): You can put this solution on YOUR website! is not an angle. It is a number representing the value of the function of an angle. Hence, your question makes no sense. John My calculator said it, I believe it, that settles it

Functions/337844: Okay i have this work sheet in honors alg 2. You match the letters too the numbers. But if someone cud just explain too me how too do it that would be great. 1. f(x)=1/x-1 2. f(x)=1/x^2-1 3. f(x)=Square root 3x 4. f(x)= 1/square root 2x there is just a few. If you can help ill post more. Thanks 1 solutions Answer 242203 by solver91311(16868)   on 2010-09-01 17:19:38 (Show Source): You can put this solution on YOUR website! Your question makes no sense. What do you want to do with these function definitions? And, by the way, you may only ask one question per post. John My calculator said it, I believe it, that settles it

Linear-equations/337843: The equation of line k is 2x-5y=-3. Write the equation of the line that passes through the point (-1,4) and is parallel to line k. 1 solutions Answer 242202 by solver91311(16868)   on 2010-09-01 17:13:08 (Show Source): You can put this solution on YOUR website! Step 1: Determine the slope of the graph of the given equation. You can proceed either of two ways. 1: Solve the equation for in terms of everything else, which is to say, put it into slope-intercept form . Then determine the slope by inspection of the coefficient on . OR 2: Divide the coefficient on by the coefficient on and then take the additive inverse of that fraction. Step 2: Determine the slope of the desired line which is equal to the slope calculated in step 1 because: Step 3: Use the point-slope form of an equation of a line to write your desired equation: where are the coordinates of the given point and is the slope determined in Step 2. Note that what you asked to be done cannot technically be done. You asked to write the equation of a line. You cannot write the equation of a line because there are an infinite number of representations of any given line. Therefore you can only write an equation of a line. John My calculator said it, I believe it, that settles it

Linear-systems/337813: 1. points A, B, and C are collinear and A is between B and C. AB= 4x -3 BC =7x + 5, and AC = 5x -16 Find each value. a. BC b. AB c. AC Please e3xplain how to solve this problem 1 solutions Answer 242198 by solver91311(16868)   on 2010-09-01 17:03:55 (Show Source): You can put this solution on YOUR website! If A, B, and C are collinear and A is between B and C, then So: Solve for , then substitute back into each of the expressions for BC, AB, and AC to calculate the three required measures. John My calculator said it, I believe it, that settles it

Radicals/337826: Z to the second power equals 85 1 solutions Answer 242194 by solver91311(16868)   on 2010-09-01 16:54:48 (Show Source): You can put this solution on YOUR website! Since you didn't bother to actually ask a question, I won't bother to actually give you an answer. Read the instructions for posting next time -- and FOLLOW them. John My calculator said it, I believe it, that settles it