| Subject | Date Asked |
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| percentages | 6/2/2009 |
Q: I think I have a simple problem I just don't remember from my school days. I'm currently getting ...
A: x is your actual wage x * 0.7 = $3391 x = $4844.29 The number of hours in a week is ...
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| Quadratic | 4/28/2009 |
Q: this is an extra credit problem that I really need to help imporve my grade. I am confused on what ...
A: The discriminant is everything inside the square root. If this is positive, then it can be ...
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| Conversion Factors. | 3/30/2009 |
Q: There are 2.54 cm in 1 inch. There are 12 inches in 1 foot. There are 3 feet in 1 yard. ...
A: 10 meters * 100 cm/meter * 1/2.54 inch/cm * 1/12 foot/inch * 1/3 yd/foot = 10 * 100/(2.54 * 12 * 3) ...
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| Math help | 3/27/2009 |
Q: Hey, Finally got around to finishing the course and got my yearend Review. I finished the handout ...
A: I've never worked a problem like this so I'm not sure the best approach but I would attack it this ...
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| percentage help | 3/27/2009 |
Q: I had a question in my class about percentage. There was a boatseller who needed some cash, so he ...
A: 6000 = x*1.20 6000 = y*0.80 Boat one was worth 6000/1.20 = 5000 so he made $1000 profit. Boat two ...
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| rescaling a series of numbers | 3/26/2009 |
Q: I have a series of numbers: 2,5,8,9,9,13,13. I need to convert them to a scale of 0 to 10, so that ...
A: Well first subtract 2 from the entire list making them: 0 3 6 7 7 11 11 Then multiply by 10/11. ...
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| dencity | 3/20/2009 |
Q: I need to find the density of a material that has a mass of 2 kg and a volume of 5 m3 in both a ...
A: Density has units of kg/m^3. (Sometimes you might find it as g/m^3 but usually it is not.) So the ...
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| Mills | 3/20/2009 |
Q: I read the following in an old business mathematics textbook: "Express 13 mills as a decimal part of ...
A: 1000 mills = $1 so 1 mill = $1/1000 = $.001 13 mill = 13* $0.001 = $.013 I think they just don't ...
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| word problem need help ASAP | 3/19/2009 |
Q: I have a few questions, and I know the answers from the answer key but I don't understand how to get ...
A: 5b + 2g = 24 7b + 4g = 36 Multiply the top equation by 2 and subtract the equations. (10b + 4g = ...
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| help!! | 3/17/2009 |
Q: i have a few questions Find X 1. tan2x+1=0 2.Cos^2x=1 3.arcsin(3x+1=pi/3 4. 2sin^2x=1 Covert into ...
A: tan(2x) + 1 = 0 tan(2x) = 0 tan = sin/cos and sin = 0 at 0, Pi, 2 Pi, n Pi 2x = 0 x = 0 (There ...
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| Daughters math question | 3/17/2009 |
Q: Use the numbers 1, 2, 3, 4, 5, and 6 to write a subtracion problem with two mixed numbers that have ...
A: Edit to add: I couldn't sleep until I figured this out. 6 2/5 - 1 3/4 5 28/20 - 1 15/20 4 13/20 ...
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| MATHS | 3/16/2009 |
Q: Solve the following pairs of simultaneous equations. If there is not a single solution state how ...
A: s'(t) = 3Sqrt(t) - 1/(2Sqrt(t)) + 3 this is the velocity s''(t) = (3/(2 Sqrt(t)) + 1/(4 ...
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| MATHS | 3/16/2009 |
Q: Solve the following pairs of simultaneous equations. If there is not a single solution state how ...
A: You get an oval centered about (0,0) and it is 4 units wide and 8 units tall. In other words, (0,4) ...
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| MATHS | 3/16/2009 |
Q: Solve the following pairs of simultaneous equations. If there is not a single solution state how ...
A: I'll do one more with three components but from there, I would like you to attempt them on your own. ...
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| MATHS | 3/16/2009 |
Q: Solve the following pairs of simultaneous equations. If there is not a single solution state how ...
A: There is no question in the first one. I'm just starting the others now. I will edit this answer ...
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| Calculating tip in head quickly? | 3/15/2009 |
Q: This isnt homework help, but I didnt see math anywhere else in this site, so I hope this is ok. I ...
A: First, usually groups that large need to tip at 15% BUT if you want to tip at 13% so be it. I'll ...
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| Math help | 3/15/2009 |
Q: 3X+2Y-7sqrt+5x+7y-(13)^2=0 Would I rearrange the equation and try to simplify? ...
A: This equation doesn't make sense to me. Perhaps it is just typing convention? Normally I see sqrt ...
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| converting time into mph | 3/7/2009 |
Q: How fast am I going if I travel 4 miles in 6 minutes?
A: Look at the words miles per hour. It tells you how to do this calculation. If I wrote it ...
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| basic math | 3/7/2009 |
Q: if you are selling a item in the loss of 10% on 50 then what is your selling prise?
A: I'm going to rewrite your question since I'm a little confused by the one you posted. If the ...
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| working out a area | 3/5/2009 |
Q: andy
A: Sorry about sending two answers. I thought it this was a follow up remark initially but now I see ...
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| weighted averages | 3/3/2009 |
Q: If I am trying to determine the overalls savings I acheieved in a new program I introduced to my ...
A: Let x be your previous spending. Just so you know . . . forms = x*.73 bc = x*.11 misc = x*.16 x = ...
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| Simplifying Square roots | 3/3/2009 |
Q: how are you. I'm having a hard time grasping how to simplify square roots. As easy as it may sound, ...
A: You have to factor the number in the square root down. I suggest you go all the way down to prime ...
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| Math Help | 3/2/2009 |
Q: how you doing. It's me again looking for more math help lol. We started a new unit and I'm having a ...
A: I'm doing fine. Thanks for asking! I'm happy you are back, except of course that you're struggling ...
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| math | 3/1/2009 |
Q: if a train cross a pole in 10 second and cross a 150 mtr length Platform in 20 second.then findout ...
A: A train crosses a pole in 10 seconds. That piece of information is important in telling you how ...
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| Function Math help please | 2/28/2009 |
Q: The following was an exam question I happened to get right. I have no idea how, but it happened lol. ...
A: First, you don't want your sqrt to be negative. So solve for values that will allow that argument ...
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| Maths - Perpendicular Line Equation | 2/25/2009 |
Q: Find the equation of the line that is perpendicular to 2y + x = 8 and that passes through the point ...
A: To find the equation of a line that perpendicular to another we have 3 steps. 1) get the original ...
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| Function Math help please | 2/25/2009 |
Q: The following was an exam question I happened to get right. I have no idea how, but it happened lol. ...
A: Warning: Math humor ahead. No it isn't really funny but eh, it is better than the normal fare. The ...
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| Finding the mean, median and mode of whole numbers | 2/25/2009 |
Q: There are 6 whole numbers in a set of numbers. The least number is 8, and the greatest number is 14. ...
A: s, t, u, v, w, x are our numbers. s = 8 x = 14 The median is 11 so let's let v be 11. so t + u ...
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| EVALUATING TRIGONOMETRIC FUNCTIONS | 2/23/2009 |
Q: Chanda, I am asking this just in cast you possibly know the answer.People who believe in biorhythms ...
A: This problem is essentially a math problem so I can help but I have no expertise biorythyms. (Does ...
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| algebra 2 | 2/15/2009 |
Q: 12. | 0.25 y + 1 | = 0.5 a.y = 1.1 or y = -1.1 c.y = 6 or y = 2 b.y = -6 or y = -2 d.y ...
A: There are too many problems for me to help with all of them. I'll work some to show you how they ...
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| algebra | 2/12/2009 |
Q: Aline perpendicular to y=3x-2 and passing through (2,3) and graph it
A: I don't do graphs sorry! But I'll tell you the line . . . The slope of the given line is: 3 The ...
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| Find the Value Of X | 2/10/2009 |
Q: I need some help with this math9 = 9x + 5, and m 5 = x + 37, find the value of x. I dont know how ...
A: If these are two different questions then I can help, if not, I don't know how to do this problem. ...
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| Maths question | 2/10/2009 |
Q: divide £54 in the ratio 3:4:2
A: I don't really know what this question means. I'll give it my best guess but if it doesn't look ...
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| Related to vector | 2/8/2009 |
Q: If you know, can please you give me as many sites as possible which i can learn on the topic vector ...
A: http://en.wikipedia.org/wiki/Euclidean_vector I personally am very fond of wikipedia. I know lots ...
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| Algebra Help | 2/5/2009 |
Q: I am trying to write an equation in oint slope form parallel to x=1 containing (-2,3) ANSWER: y - ...
A: Upon thinking about this further, you might put: 0 = (x + 2) That would be closer to point slope ...
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| math | 2/4/2009 |
Q: 8+4(4-1)power or 3
A: Is this an "order of operations" problem. Do you need help evaluating it? 8 + 4(4 -1)^3 Use ...
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| Algebra Help | 2/4/2009 |
Q: I am trying to write an equation in oint slope form parallel to x=1 containing (-2,3)
A: y - y1 = m (x - x1) is the point slope form The line x = 1, is a vertical line where all the x ...
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| equation help | 2/4/2009 |
Q: Ace hardware sells wrenches for ($86) and hammers for ($300). Ordered were 45 cartons total. $9200 ...
A: The equations is poorly written in my opinion. I think what it is trying to say is that CARTONS of ...
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| Algebra | 2/4/2009 |
Q: what is the four consecutive multiples of 15 whose sum is three time the lcm of 10 and 22? I thought ...
A: lcm do you mean lowest common multiple? consective multiples of 15 are: 15, 30, 45, 60 . . .. so ...
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| slope-intercept | 2/3/2009 |
Q: i need to write an equation in slope intercept form with the slope equaling 2 and the points (3,7) i ...
A: The equation of a line in slope-intercept form is: y = mx + b where m is the slope and b is the ...
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| Digit problems. | 2/3/2009 |
Q: i need help on this one problem. i can't find out the original number! It is, The units digit of a ...
A: a two digit number: y*(10) + x but x = 6y - 4 So that digit can also be written as 10y + 6y - 4 ...
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| parabola shapes | 2/1/2009 |
Q: I need help with parabola shapes Any help would be appreciated Thank You
A: I'm happy to help but there is a lot to be said about parabolas. What is your question exactly? ...
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| array | 1/28/2009 |
Q: What is an array? The problem is to write out arrays for each number and then write prime or ...
A: I think it is just a list with two items in it. Here is an example: Number Prime/Composite 7 ...
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| Perpdendicular lines through given points. | 1/27/2009 |
Q: I am having a difficult time understanding how to do this. I don't understand how to write the ...
A: Ok here are the steps. 1) find the slope of the given line 2) find the slope of the perpendicular ...
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| fractions | 1/26/2009 |
Q: estimate products of fractions7/8 x 57 3/8 x 28 8/9 x 27 please help me. I have 20 problems and i ...
A: 7/8 * 57 Well it says ESTIMATE so what I would do is this: 7/8 * 57 is pretty close to 7/8 * 56 ...
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| Budget | 1/24/2009 |
Q: 1.Upon completion of his degree, Michael is hired as a technician at the rate of $900 every two ...
A: 1.Upon completion of his degree, Michael is hired as a technician at the rate of $900 every two ...
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| Math | 1/21/2009 |
Q: At a local theater, adult tickets cost $8 and student tickets cost $5. At a recent show, 500 tickets ...
A: We set up the equations like this: a + s = 500 a*8 + s*5 = 3475 (500 -s)*8 + s*5 = 3475 4000 - 3s = ...
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| distance problem | 1/19/2009 |
Q: If 2 boats leave opposite banks of same river and one travels faster than other and meet 650m from ...
A: You are on the right track with time,speed,distance formula. Here is how to set this up. No random ...
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| 3 Consecutive Odd intergers help ASAP | 1/16/2009 |
Q: Please Dont just give me the answer, show me how to get the answer. Show me the work. Thank you! ...
A: Ah well that equation would give you the sum of three consecutive integers NOT consecutive ODD ...
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| Distance Rate Time for Marathon | 1/15/2009 |
Q: Please Dont just give me the answer, show me how to get the answer. Show me the work. Thank you! ...
A: All we need to know is when the runners will be at the same place and we need to make sure that the ...
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| Mathematics | 1/15/2009 |
Q: A student gave the following wrong answers. a) 4√2 x 5√2 = 4(1,4)(5)(1,4)=39.2 b) ...
A: a) The correct answer is exactly 40. The student used that approximation of 1.4 to represent the ...
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| MATHS | 1/14/2009 |
Q: Solve the following pairs of simultaneous equations. If there is not a single solution state how ...
A: 2x + y = 3 x – 2y = -1 ************** x = 2y - 1 2(2y -1) + y = 3 4y -2 + y = 3 5y = 5 y = 1 x = ...
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| algebra | 1/14/2009 |
Q: how do you count to find the slope by drawing a slope triangle
A: To find the slope by drawing triangle, begin by picking one of the points to be your starting ...
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| Adding percentages to dollar amounts | 1/13/2009 |
Q: I need to add 10% to $4.75 . Please show me a example step by step how to do it. Thanks so much.
A: $4.75 + 10% First let's calculate 10% 10% of $4.75 = 4.75*0.10 = 0.475 So $4.75 + $0.475 = ...
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| math | 1/12/2009 |
Q: I need help with evalvate the following fraction for decimals and percent. 1/16 3/16 8/16 9/16 2/16 ...
A: I'm sorry but I used a calculator. You can also use long division. That is kinda hard to put into ...
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| math and quilts | 1/10/2009 |
Q: If I have a five row by five column quilt (25 squares), how many rectangles are in that quilt?
A: If this is a question regarding quilting, then I don't think I have a good answer for you. If on ...
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| savings account combounded yearly | 1/9/2009 |
Q: Formula A=P(1 + t/n)nt round answer to one demical place. amount invested $72.50, compounding ...
A: Since your formula isn't exactly right, I'll derive it for you. A = P + I A = P + P(rate/number of ...
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| calculatin the coordinates of the vertex. | 1/7/2009 |
Q: y=(x-7)(xt2) p.s. the "t" is a plus not a variable
A: y = (x - 7)(x + 2) y = x^2 -5x -14 The vertex is given by (h, k) where h = -b/(2a) h = -(-5)/(2) ...
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| I need math help...Thank you for your help | 1/6/2009 |
Q: Write an equation of the line that passes through the given points. 1. (1,4),(2,7)
A: Jon, no problem! It is my pleasure to help. To construct the equation for a line, let's use the ...
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| Need to calculate Match | 1/5/2009 |
Q: (x / 100)* 100 = 15%
A: I'm not sure what match means but I'll solve this for x. If you need something different, just let ...
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| slopes | 1/4/2009 |
Q: i know that in finding the slope you use the "y-y/x-x" with the subscripts and all. but isnt there ...
A: Allison you are SO close to having it perfect. Your formula for the slope of the line is right m = ...
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| Geometry | 1/3/2009 |
Q: Recently, I have found myself struggling with many questions in my math class related to slopes and ...
A: To answer about the y_bi: Sorry this wasn't clear enough! A common algebra problem will give two ...
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| Geometry | 1/3/2009 |
Q: Recently, I have found myself struggling with many questions in my math class related to slopes and ...
A: You will ALWAYS use the coefficient (in this case it was a fraction) of the x term. Let me back up ...
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| Geometry | 1/3/2009 |
Q: Recently, I have found myself struggling with many questions in my math class related to slopes and ...
A: The slope of a line perpendicular to a line with slope given by m is -1/m It is pretty easy to do. ...
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| graph of a parabola | 1/2/2009 |
Q: I learned at one time that the graphic representation of a quadratic equation set is a parabola. I ...
A: I think there is just a formatting issue. I think I would have written that equation like this: y = ...
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| math precalculus | 1/1/2009 |
Q: find all real and imaginary roots of 2x^4+3x^3+7x^2-7x-5=0
A: Obvious solution x = 1 Divide that out and you get: 2 x^3 + 5 x^2 + 12 x + 5 x = -.5 Divide ...
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| maths help | 12/29/2008 |
Q: Find the equation of the line which is parallel to the line with equation y-3x+5 and passes through ...
A: For lines to be parallel, they must have equal slopes. So the first thing we must do is find the ...
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| Math - percentages | 12/11/2008 |
Q: The course I teach has an evaluation method that has 20% of the final mark for basic quizzes ...
A: Here is how to achieve the results: Basic quizzes: Consider them all as one big quiz and so the ...
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| trignometery | 11/18/2008 |
Q: is (50/tan)a quantity are (50/tan),,(1/tan 50),,(cot 50),,((tan^-1)50) one and the same thing
A: (50/tan) is not a proper function. Tan needs an argument such as tan(x) 1/tan 50 is a function ...
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| Word problem | 11/17/2008 |
Q: The speed of train A is 20 miles slower than the speed of train B. Train A travels 190 miles in the ...
A: Three equations, three unknowns. There should be a solution. First set up the equations. Eq 1 ...
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