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Basic Math/Questions
| Subject | Date Asked | Expert |
| Changing percent to fraction lowest terms | 9/7/2011 | John Zalewski |
| Q: How do i change 7-1/2% to a fraction? A: Cassie. To convert 7 1/2% to a fraction, first change the 1/2 to a decimal by dividing 2 into 1, ... | ||
| Mathematica - Scientific,Engineering and Mathematical fields | 8/18/2011 | Abe Mantell |
| Q: Looks like a Excellent Program for mathematical modeling and visualization. ... A: Yes, Mathematica is a wonderful tool for doing and visualizing mathematics! I use a similar product ... | ||
| Proportion Meaning | 8/12/2011 | Abe Mantell |
| Q: If 5 concrete bricks weigh 20 lbs. what is the weight of 15 bricks of the same kind? I determined ... A: I do not know if the product has a special name or significance. The only practical interpretation ... | ||
| math | 8/9/2011 | John Zalewski |
| Q: rounding numbers to the nearest hundredth and the nearest thousands A: Rosa. Let's take a number, say, .12348. To round to the nearest hundredth, take a look at the ... | ||
| Hours of work | 8/8/2011 | Abe Mantell |
| Q: I worked the following what are my hours that I can bill 8.45 - 5pm with a 40 minute lunch break ... A: > 8.45 - 5pm with a 40 minute lunch break 8 hrs 15 min - 40 min = 7 hrs 35 min > 8am - 5pm with a ... | ||
| Percentages | 8/5/2011 | Abe Mantell |
| Q: Is 9.1% and 9.10% the same? For example, if the employment rate is 9.10% can this percentage be ... A: Numerically 9.1 and 9.10 are the same. However, they imply two different accuracies. 9.1 could be ... | ||
| Mirrored Numbers - (Exact Replica of the Number) - Optics & Real Life Use ? | 7/26/2011 | Abe Mantell |
| Q: What i observe by looking at the Numeric Whole Numbers(Integers) in Mirror (Glass) Object are the ... A: "Mirrored Numbers" have vertical symmetry. I would definitely NOT classify such numbers in any way ... | ||
| Please hep with my fractions. Xxxo | 7/24/2011 | Abe Mantell |
| Q: 27. Simplify: (x+3/ 5) - ( 2x+1/10) 28. SImplify: (x+3/5) + (x-2/2x) 32. Simplify: 1/p^2 - 1/q^2 ... A: Should the fractions be (x+3)/5 instead of x+3/5? I think so... 27. Simplify: ... | ||
| curious | 7/20/2011 | Abe Mantell |
| Q: If one million people died in one year in a country where the population was ten million, how many ... A: If 1,000,000 ppl died in a year, then just divide that by the number of minutes ina year to get the ... | ||
| hellpp!!!!! | 7/20/2011 | Lynn Houston |
| Q: how can i factor mr + ns - nr - ms A: yes, swap the ns and -nr so you have mr - nr + ns -ms, then factor out the r and s. r(m-n) + ... | ||
| Rates | 7/12/2011 | Abe Mantell |
| Q: If an automobile can travel 50 miles in one hour (60 minutes), how long will the same automobile ... A: I gather the question should be: "How long will it take to travel the SAME DISTANCE at 80 MPH?" ... | ||
| I'm having such a hard time with Fractions. | 7/7/2011 | Abe Mantell |
| Q: 8. Simplify: x^4-2x^2y^2+y^4/x^4-x^3y-xy^3+y^4 10. Simplify: z(z-1)= z(z+1) 22. Simplify: ... A: You have many questions here. I'll just answer the first few. Try the others, if you need help, ... | ||
| Math | 7/1/2011 | Lynn Houston |
| Q: 1. "X is at most 3" can be represented by x ≤ 3. Is this true or false? 2. The sum of a ... A: 1. "X is at most 3" can be represented by x ≤ 3. true 2. The sum of a number and -4 is ... | ||
| Convertions | 6/25/2011 | John Zalewski |
| Q: How would I express the area of a tile that is 5'' long on each into square feet? A: Carla. Area is length x width. Each side of the square tile is 5 inches long, so the area would be ... | ||
| Rounding Up | 6/24/2011 | Lynn Houston |
| Q: When rounding to two Decimal Places would the number 0.6549 become 0.65 or 0.66 due to the nine ... A: if you're rounding to 2 digits, you only look at the 3rd digit. You only look to the next digit, so ... | ||
| Working out overheads. | 6/20/2011 | John Zalewski |
| Q: It takes 10 seconds to do a click on a day where performance on the system is slow but on a good day ... A: TJ. There are 2880 10-second sets in an 8-hour period. There are 60 seconds in 1 minute. So, ... | ||
| GCSE ratio question | 6/12/2011 | John Zalewski |
| Q: Jenny uses her mothers recipe to make cheese scones. Her recipe uses a mixture of self-raising ... A: Teresa. I'm sorry for the delay. Initially, you have to solve for 'x', which is the amount of ... | ||
| algebra | 6/11/2011 | Abe Mantell |
| Q: solve x 7x -16 < 8x +2 A: Inequalities are solved just like equalities, except when multiplying or dividing by a negative ... | ||
| Food Math | 6/7/2011 | Abe Mantell |
| Q: I decided to mix colors when mixing jello mix. Each box contains 3oz and requires 1 cup of water ... A: Convert 0.7333333 to a fraction? Do you mean a "standard" fraction that you would see on a ... | ||
| algebra | 6/4/2011 | Lynn Houston |
| Q: How to you solve 5/7-5/51 simplifying if possible. I need a break down of this problem. thank you. A: You start by finding a common denominator (a number that is divisible by both 7 and 51). Sometimes, ... | ||
| volume of solids | 5/29/2011 | Lynn Houston |
| Q: find the volume of a cone that is 18in. high and has a 6in. radius A: for a cone with height h and base radius r, the volume, V of the cone will be: v= ... | ||
| fractions | 5/18/2011 | Josh |
| Q: what is half of 2 and 1/3 cups of water A: We can do this in two ways. Method 1: Combine 2 and 1/3, converting this quantity into an improper ... | ||
| Dilute | 5/13/2011 | Josh |
| Q: http://www.sciencebuddies.org/science-fair-projects/project_ideas/OceanSci_p003.shtml?fave=no&isb=cm ... A: Ashley, To keep track of how much salt is in each cup, let the initial concentration of the stock ... | ||
| Another twist to the golf pairing question | 5/9/2011 | Josh |
| Q: Came across your answer after a lot of stumbling around on the web. We have a total of 12 players ... A: I didn't try anything fancy. I set some constraints and played around with different combination in ... | ||
| Equation of a Line Parallel to a Given Line through Given Points | 5/7/2011 | Josh |
| Q: Help with solving (4,-4)3x-5y=8 A: Tracy, First, rearrange 3x-5y=8 into the standard form y=mx+b ....[1] Step 1: 5y=3x-8 Step 2: ... | ||
| Inverses | 5/4/2011 | Josh |
| Q: What is the inverse of the number 1? How is its inverse determined? I thank you for your reply. ... A: Kenneth, There is nothing wrong as far as I can see. Yes, (1/2) is the multiplicative inverse of 2. ... | ||
| quadratic equations | 5/3/2011 | Josh |
| Q: Jenny is y^2 yrs old and her daughter allyson is y yrs old. if jenny lives to the age of 13y ... A: To solve this problem, let us deal with each piece of information one by one. Our objective is to ... | ||
| Help with maths! | 5/1/2011 | Lynn Houston |
| Q: 6 + 2x = x - 6 please please could you help me :) thankyou Georgia :) A: The secret to solving these is to "undo" everything that has been done to x. Multiplication ... | ||
| General | 4/29/2011 | John Zalewski |
| Q: In cases whn i.e an essay counts 20% towards an overall grade and the exam 80% and someone has ... A: Michael. I am doing okay. Here is the formula, in general: Overall grade = Exam weight (Exam ... | ||
| maths-substitution into formula | 4/19/2011 | Josh |
| Q: (A)find the value of f if 1/u + 1/v =1/f,u =5 and v=3. A: To find the value of f, we can first plug in the values for "u" and "v" on the left hand side of the ... | ||
| MATHS | 4/6/2011 | Lynn Houston |
| Q: The average of 5 consecutive odd numbers V,W,X,Y and Z is 41.What is the product of V and Z? A: Just looking at the problem, if the average is 41 and there are 5 consecutive odd numbers, the ... | ||
| fractional equations | 3/31/2011 | John Zalewski |
| Q: How do I solve this equation please 5(2x/1) 4x/7 _________ = 3 A: Dorothy. 5(2x/1)/3 = 4x/7 Step 1: Multiply 5 through the parentheses. Result: (10x/1)/3 = 4x/7 ... | ||
| MATH critical thinking | 3/24/2011 | John Zalewski |
| Q: first quarter: sales in region a were 50.000. in region b, 100.000 region c sold 20% more than ... A: Alkexandra. Sales in region A were 50,000 for the first quarter. In region B, 100,000. Region C ... | ||
| ratio in its simplest form | 3/22/2011 | John Zalewski |
| Q: I don't know how to do 1.2 : 4 in its simplest form. Please help A: Courtney. I'm sorry for the delay in responding. If you're looking for a ratio in its simplest ... | ||
| question of application problems | 3/17/2011 | Josh |
| Q: Sean is deciding whether to select a satellite receiver or cable for his television programming. The ... A: The unknown quantity here is the number of months it takes to achieve break even; let this be X. ... | ||
| sir/ma'am. | 3/16/2011 | John Zalewski |
| Q: what is the number of cubic units to cover a solid figure A: Meghan. It depends on the dimensions of the figure. If the figure's length, width, and height are 5 ... | ||
| math question | 3/11/2011 | John Zalewski |
| Q: hope you can help me answer this math problem. if 8x+12=24, what is the value of 24x+36? A: Arnold. First, solve for x in the equation. 8x + 12 = 24 Step 1: Subtract 12 from both sides. ... | ||
| Finding equations | 3/4/2011 | Josh |
| Q: I have not worked on finding math equations based on some logic for many years. I would like to seek ... A: Regarding the first approach, the simplest way of following the sequence is to execute the following ... | ||
| Probability | 3/2/2011 | Josh |
| Q: and 999 people pull beans from the jar, what is the probability of one person pulling the green ... A: To answer this problem, we can ask the opposite question, what is the probability that no one pulls ... | ||
| combinations/permutations | 2/28/2011 | Josh |
| Q: I was having difficulty understanding how to calculate some percentages dealing with combinations ... A: You are right in so far as "adding up the probabilities of drawing one/two/three and four aces" is ... | ||
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Basic Math
Answers by Expert:
John Zalewski
Top Expert on this page
Expertise
I can help you solve problems involving fractions, decimals, ratios, and algebra. I can teach you how to do math faster, and even in your head. I can teach math definitions, and help you study, if necessary. Please do not ask any graphing, trigonometry, or calculus questions. Try to work through homework questions before asking for assistance.
Experience
I routinely process numbers of all kinds in my head, without need of a calculator.
Education/Credentials
I was an A math student while in high school.
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