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# Recent problems solved by 'solver91311'

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 Functions/340624: Could you help me Explain how Multiplying the edge length of a cube by a number affects the volume of the cube. Thanks!1 solutions Answer 244052 by solver91311(16897)   on 2010-09-08 20:08:22 (Show Source): You can put this solution on YOUR website! If the number is greater than 1, the volume is multiplied by the cube of the number. If the number is less than 1, the volume is divided by the cube of the number. If the number is 1, the volume doesn't change at all. John My calculator said it, I believe it, that settles it
 Numbers_Word_Problems/340628: is 21,781 an odd or even # 22,765,087 an odd or even # 789,096 an odd or even # 537 an odd or even # 449 an odd or even # 30,310 an odd or even # 2,645,218 an odd or even # 421,767 an odd or even # 645,031 an odd or even # 2,775,944 and odd or even #1 solutions Answer 244051 by solver91311(16897)   on 2010-09-08 20:06:33 (Show Source): You can put this solution on YOUR website! If the ones digit is 0, 2, 4, 6, or 8, the number is even. Otherwise, it is odd. John My calculator said it, I believe it, that settles it
 test/340662: The elevator speed in the Washington monument takes 75 seconds to travel 500 feet to the top floor. What is the speed of the elevator in miles per hour? Give your answer to two significant digits.1 solutions Answer 244049 by solver91311(16897)   on 2010-09-08 20:04:41 (Show Source): You can put this solution on YOUR website! 500/75 feet per second times 3600 seconds per hour times 1/5280 miles per foot. I'll leave you alone so that you can spend a little quality time with your calculator. John My calculator said it, I believe it, that settles it
 Length-and-distance/340651: "What is the length of LINE KI if K= (0,6) and I= (-6,0)."1 solutions Answer 244044 by solver91311(16897)   on 2010-09-08 19:59:25 (Show Source): You can put this solution on YOUR website! Use the distance formula to find the length of the segment where and are the coordinates of the given points. John My calculator said it, I believe it, that settles it
 Length-and-distance/340660: "What is the length and midpoint of line JL if J= (6,-3) and L= (-4,4)?"1 solutions Answer 244043 by solver91311(16897)   on 2010-09-08 19:56:37 (Show Source): You can put this solution on YOUR website! Use the midpoint formulas to find the coordinates of the midpoint and And use the distance formula to find the length of the segment where and are the coordinates of the given points. John My calculator said it, I believe it, that settles it
 Angles/340661: How do you find the value of x? 1 solutions Answer 244042 by solver91311(16897)   on 2010-09-08 19:54:39 (Show Source): You can put this solution on YOUR website! Without knowing the relationship between and there is no way to tell. John My calculator said it, I believe it, that settles it
 Length-and-distance/340653: "What is the midpoint of KM if K= (6,0) and M= (1,2)?" 1 solutions Answer 244041 by solver91311(16897)   on 2010-09-08 19:52:10 (Show Source): You can put this solution on YOUR website! Use the midpoint formulas: and where and are the coordinates of the given points. John My calculator said it, I believe it, that settles it
 Distributive-associative-commutative-properties/340541: x-(4+3x)+8 = 6x-51 solutions Answer 244023 by solver91311(16897)   on 2010-09-08 17:42:54 (Show Source): You can put this solution on YOUR website! Please go back and read the instructions for posting on this site. Especially the part that talks about telling us what you want clearly and completely. John My calculator said it, I believe it, that settles it
 expressions/340539: why do you get a -3 when figuring the problem -6-(-3)1 solutions Answer 244020 by solver91311(16897)   on 2010-09-08 17:41:42 (Show Source): You can put this solution on YOUR website! Because -(-3) is the same as +3, so the problem is actually -6 + 3 which equals -3 John My calculator said it, I believe it, that settles it
 Square-cubic-other-roots/340536: the area of a sqaure is 289 square inches. what is the length of each side of the square1 solutions Answer 244017 by solver91311(16897)   on 2010-09-08 17:37:44 (Show Source): You can put this solution on YOUR website! Take the square root of 289 John My calculator said it, I believe it, that settles it
 Travel_Word_Problems/340528: How long will it take a plane moving at 220m/s to travel 95km?1 solutions Answer 244014 by solver91311(16897)   on 2010-09-08 17:34:55 (Show Source): You can put this solution on YOUR website! Divide 95,000 by 220 to get the number of seconds. Divide that by 60 or 3600 to get the number of minutes or hours. John My calculator said it, I believe it, that settles it
 Numbers_Word_Problems/340526: my number has doubled the number of one as ten the sum of the digits is nine1 solutions Answer 244012 by solver91311(16897)   on 2010-09-08 17:29:42 (Show Source): You can put this solution on YOUR website! I'm just guessing, but I think you mean: My number has a ones digit that is double the tens digit. The sum of the digits is nine. Going under that assumption, let represent the tens digit, then must represent the ones digit. Solve for to get the tens digit. Double it to get the ones digit. Construct your number. John My calculator said it, I believe it, that settles it
 Permutations/340521: if you are taking a multiple choice test (a,b,c,&d) consisting of 10 questions, how many different arrangements of answers are there?1 solutions Answer 244009 by solver91311(16897)   on 2010-09-08 17:24:50 (Show Source): You can put this solution on YOUR website! There are 4 ways to pick the first answer times 4 ways to pick the second answer times 4... But if you are trying to calculate the probabilities of getting a certain number of correct answers by guessing at random, you might be going at it the wrong way. Write back and tell me what you are up to. John My calculator said it, I believe it, that settles it
 Rectangles/340489: the length of a rectangle is 8 inches more than its width. the perimeter of the rectangle is 64 inches. find the length and width of the rectangle.1 solutions Answer 243999 by solver91311(16897)   on 2010-09-08 16:43:08 (Show Source): You can put this solution on YOUR website! Let represent the measure of the width. Then represents the measure of the length. Solve for . John My calculator said it, I believe it, that settles it
 Inequalities/340487: Determine in terms of inequality the average scores of a student who got 82,76 and 78 on first 3 tests and derive his marks in the fourth test, whose average should be 80.1 solutions Answer 243998 by solver91311(16897)   on 2010-09-08 16:41:15 (Show Source): You can put this solution on YOUR website! Hint: In order to have an average of 80 on 4 tests, the sum of his scores must be 4 times 80 = 320. He has 236 total so far (82 + 76 + 78). John My calculator said it, I believe it, that settles it
 Linear-equations/340458: on thursday a local hamburger shop sold a combined total of 308 hanburgers. the number of cheeze burgers sold was three times the number of hamburgers sold. How many hamburgers were sold om thursday?1 solutions Answer 243985 by solver91311(16897)   on 2010-09-08 15:56:23 (Show Source): You can put this solution on YOUR website! Answering the question exactly as you posed it, ignoring your rather cavalier attitude toward spelling, the answer is 308. I highly suspect that you meant On Thursday a local hamburger shop sold a combined total of 308 hamburgers and cheeseburgers. If that is what you meant, then repost your question worded correctly. Someone will be delighted to help you. John My calculator said it, I believe it, that settles it
 Linear-equations/340461: Customers of a phone company can choose between two servoce plans for long distance calls.The first plan has a $29 one time acavation fee and charges 14 cents per miniute. The second plan has no activation fee and charges 19 cents per minute.After how many minutes of long distance calls will the cost of the two palns be equal?1 solutions Answer 243983 by solver91311(16897) on 2010-09-08 15:51:10 (Show Source): You can put this solution on YOUR website! Let represent the number of minutes used. Solve for John My calculator said it, I believe it, that settles it  Numbers_Word_Problems/340460: four increased by the product of two and seven1 solutions Answer 243982 by solver91311(16897) on 2010-09-08 15:44:33 (Show Source): You can put this solution on YOUR website! What about "four increased by the product of two and seven"? Go back and read the instructions for posting questions on this site. John My calculator said it, I believe it, that settles it  Probability-and-statistics/340455: In a class of 20 students, a group of 5 students is selected to work on a project. How many groups are possible?1 solutions Answer 243981 by solver91311(16897) on 2010-09-08 15:42:56 (Show Source): You can put this solution on YOUR website! You need which is the number of combinations of things taken at a time and is calculated by , and you are interested in calculating John My calculator said it, I believe it, that settles it  Numbers_Word_Problems/340446: the opposite of four is less than the product of y an seven1 solutions Answer 243979 by solver91311(16897) on 2010-09-08 15:39:30 (Show Source): You can put this solution on YOUR website! What a fascinating assertion. What did you want to do with it? Go back and read the instructions for posting questions on this site. John My calculator said it, I believe it, that settles it  Word_Problems_With_Coins/340449: jenny has 3 coins in her pocket that equal 65 cents what are these coins?1 solutions Answer 243978 by solver91311(16897) on 2010-09-08 15:37:59 (Show Source): You can put this solution on YOUR website! Half-dollar, dime, and a nickel. John My calculator said it, I believe it, that settles it  Money_Word_Problems/340453: You invest$300 at a simple annual interest rate of 4.5%. How much simple interest will you earn in 10 years?1 solutions Answer 243977 by solver91311(16897)   on 2010-09-08 15:36:48 (Show Source): You can put this solution on YOUR website! Multiply 300 times 0.045. That is the amount you earn in 1 year. Multiply that by 10. John My calculator said it, I believe it, that settles it
 Travel_Word_Problems/340450: one bus average of 55 mi/h and the other bus average from 45 mi/h in different directions. When will they be 400 miles apart?1 solutions Answer 243976 by solver91311(16897)   on 2010-09-08 15:35:52 (Show Source): You can put this solution on YOUR website! The two busses are moving apart at a rate of 55 + 45 = 100 miles per hour. How long will it take something going 100 mph to go 400 miles? John My calculator said it, I believe it, that settles it
 expressions/340296: I have to use 4 4s and come up with the answers 13 and 14?1 solutions Answer 243974 by solver91311(16897)   on 2010-09-08 15:33:57 (Show Source): You can put this solution on YOUR website! You get to use exactly four 4s, any of the arithmetic operations, and nothing else? I have an answer for 14: Still working on 13 because I don't think will be allowed because the exponent is a number other than 4. John My calculator said it, I believe it, that settles it
 Travel_Word_Problems/340445: if you are driving 45 mph, how many minutes will it take you to go 4.8 miles1 solutions Answer 243972 by solver91311(16897)   on 2010-09-08 15:16:28 (Show Source): You can put this solution on YOUR website! 45 miles per hour is 3/4 mile per minute. Divide 4.8 by 0.75. John My calculator said it, I believe it, that settles it
 Numbers_Word_Problems/340443: If x and y are two-digit integers such that x > 40 and y<70, which of the following is closest to the maximum possible value of xy ? (A) 700 (B) 2800 (C) 4000 (D) 7000 (E) 28000 Could you please explain the above problem. Thanks1 solutions Answer 243970 by solver91311(16897)   on 2010-09-08 15:14:14 (Show Source): You can put this solution on YOUR website! If is a two digit integer that is greater than 40, the largest it could be would be 99. If is an integer and less than 70, the largest it could be is 69. 69 times 99 is a little bit less than 70 times 100 = 7000. John My calculator said it, I believe it, that settles it
 Money_Word_Problems/340424: The average of the salaries of Kelly, Renee and Nina is 20,000 a year. If Kelly earns 4000 less than Renee and Nina's salary is two-thirds of Renee's salary, find the salary of each person. I've tried setting up as follows; Let R = Renee Let R - 4000 = Kelly Let 2/3 * R = Nina R + ( R - 4000 ) + 2/3 * R = 20,000 It's not working out for me though. Anyone have any thoughts?1 solutions Answer 243952 by solver91311(16897)   on 2010-09-08 14:36:46 (Show Source): You can put this solution on YOUR website! You are SOOOOOO close. Consider this: How do you compute the average? You add up all of the items and divide by the number of items. That means that if the average of 3 things is 20,000, then the sum of the three things has to be 60,000. So, instead of You need I'll leave the rest to you since the solution is quite straightforward from here. Write if you get stuck again. John My calculator said it, I believe it, that settles it
 Polynomials-and-rational-expressions/340369: 24x^31 solutions Answer 243945 by solver91311(16897)   on 2010-09-08 14:27:21 (Show Source): You can put this solution on YOUR website! What a cute little cubic monomial! Was there a question sometime in our near future? Did you actually READ the instructions for posting questions on this site? If you did read the instructions, did you understand them? If you did understand them, did you simply think that you are too important for such mundane nonsense to apply to you? John My calculator said it, I believe it, that settles it
 Miscellaneous_Word_Problems/340391: Interest compounded continuously. Suppose that P 0 is invested in a savings account where interest is compounded continuously at 3.1% per year. * a) Express P(t) in terms of P0 and 0.031. * b) Suppose that \$1000 is invested. What is the balance after 1 yr? after 2 y...1 solutions Answer 243942 by solver91311(16897)   on 2010-09-08 14:23:42 (Show Source): You can put this solution on YOUR website! In general: So for 3.1% per year: For 1000 for 1 year: For 1000 for 2 years: I'll leave you alone to spend some quality time with your calculator. John My calculator said it, I believe it, that settles it
 Geometric_formulas/340345: Find the volume of a right circular cylinder whose base has an area of 9 sq. in. and whose height = 6".1 solutions Answer 243940 by solver91311(16897)   on 2010-09-08 14:19:15 (Show Source): You can put this solution on YOUR website! Multiply the height times the area of the base. John My calculator said it, I believe it, that settles it
 Average/340418: Is 3xy + 2y + 15z - 20 = 0 a linear equation? If not, why not?1 solutions Answer 243939 by solver91311(16897)   on 2010-09-08 14:17:56 (Show Source): You can put this solution on YOUR website! A linear equation is an equation in which ALL of the terms are degree 1. The degree of a term is the SUM of the exponents on ALL of the variables in that term. Rewrite including all of the understood exponents: Note that the degree of the first term is 1 + 1 = 2, and therefore the equation is not linear. If you go to 3D Graphing Calculator and enter your equation, you will be able to see that the thing is non-linear. John My calculator said it, I believe it, that settles it