| Subject | Date Asked |
|
| word problem | 10/2/2009 |
Q: A store uses twice as many five-dollar bills as ten-dollar bills. $2500 was obtained in five- and ...
A: Let F be the number of five dollar bills Let T be the number of ten dollar bills The store uses ...
|
| Motion word problem | 9/30/2009 |
Q: Train A travels 12 mph slower than Train B. Train travels 200 miles in the same time it takes Train ...
A: Let b be the speed of train B , and let a be the speed of train A. Train A travels 12 mph slower ...
|
| Finding intercepts | 4/21/2009 |
Q: What are the intercepts of x+y=56? Are they (0,0)? Also, what are the intercepts for x+y=56, when ...
A: To find the x intercept , put 0 in for y and solve for x . To find the y intercept , put 0 in for x ...
|
| algebra | 2/21/2009 |
Q: hallo, here's my question Two 40 % and 60 % solutions of sulfuric acid were mixed and then were ...
A: x = the amount of the first solution y = the amount of the second solution the total amount of ...
|
| motion problem i need help with | 1/21/2009 |
Q: the speed of a stream is 3km/h. A boat travels 4km upstream in the same time it takes to travel 10km ...
A: Let s be the speed of the boat. The stream is moving at 3km/h , so Downstream boat speed = s+3 ...
|
| slope intercept | 9/22/2008 |
Q: what is the slope intercept form of the equation of a line that passes through (4,-6) and (3,2)
A: slope = (-6 - 2) / (4 - 3) = -8/1 = -8 y = mx + b is the slope intercept form where m is the slope ...
|
| Graphs | 9/21/2008 |
Q: A graph passes through the points (0,a) , (b,c) , and (d,e) (b,c) is the vertex. What is its ...
A: The graph looks like a parabola , so suppose the equation is y = rx^2 + sx + t We must figure out ...
|
| Algebra | 8/21/2008 |
Q: How do you simplify problems like this one: (^ means exponent) x^7 - x^5 i have the answer but dont ...
A: Factor out the highest power of x x^7 - x^5 = x^5 ( x^2 - 1) For the second problem, start by ...
|
| algebra | 5/21/2008 |
Q: what is the square root of 108x^4y^6z^9
A: take the square root of the terms one at a time then multiply together 108 = 9 x 4 x 3 , so the ...
|
| algebra I | 2/22/2008 |
Q: linear combination method: 5X - 2y = 4 x + 2y = 8
A: Not sure what method you are referring to , but here is how I would solve the equations Add the ...
|
| Algebra II H | 1/22/2008 |
Q: I am a sophomore and am in an Algebra II Honors class. I took Algebra I as a freshmen, and got an A. ...
A: I doubt you are just stupid at math. You need a good textbook and a good teacher. If you have ...
|
| Ouadratic | 12/21/2007 |
Q: How do you put (2x+1)^2 in standard form
A: standard form is a(x-h)^2 + k (2x+1)^2 = 4x^2 + 4x + 1 = 4(x^2 + x + 1/4) at this point, we ...
|
| need help | 10/22/2007 |
Q: how do you find the zeros for x-sqrtx-12.
A: I assume you mean the zeros of x - x^1/2 - 12 so we try to solve x - x^1/2 - 12 = 0 x - 12 = ...
|
| Word problem | 6/21/2007 |
Q: Professor Davis counts his midterm as 2/3 of the grade, and his final as 1/3 of the grade. Jason ...
A: Let f be the score on the final. Jason's average will be (2/3)(64) + (1/3)f We want this average ...
|
| math problem | 5/15/2007 |
Q: the diagram is one of a graph of the function f(x)=(x^2)+1,-1<=x<=1 and p,q E(element) R.(i)find ...
A: i) p=2 and q = 1 OR q = -1 ( either value for q will work ) ii) the range of this function is 1 ...
|
| Original Amount | 3/15/2007 |
Q: A storage tank contains a brine composed of 2.5% sodium chloride. A 3% concentration is a result of ...
A: Let B = the original amount of brine (salt water) Since the solution is 2.5% sodium chloride ...
|
| Algebra | 10/16/2006 |
Q: How do square roots and times itself come about in an equation?
A: Some simple examples if an object falls for t seconds, the distance it falls will be distance = ...
|
| y axis | 9/27/2006 |
Q: what is it called when the y axis = 0?
A: I am not sure what you are asking. If you want to know what points all have y=0 , the answer is the ...
|
| diameters and revolutions formula's | 9/26/2006 |
Q: 20" diameter wheel how far will it go in on complete revolution just need the formula would help for ...
A: One complete revolution means the wheel travels the distance completely around the wheel. This is ...
|
| Algebra | 9/3/2006 |
Q: What is the circumference of a circle whose radius is 15 feet? I can't remember how to do the whole ...
A: The circumference of a circle is pi times the diameter. You only square when you are finding the ...
|
| Extraneous solutions | 8/9/2006 |
Q: I have just gotten to radical expressions in my algebra couse, and the book says that extraneous ...
A: An extraneous solution is one that doesn't satisfy the original radical equation. A negative number ...
|
| Algebra | 8/1/2006 |
Q: I am helping my niece who is home schooled with algebra. There is what seems to be a very simple ...
A: You didn't do anything wrong. It just happens sometimes that radical equations do not have any ...
|
| algebra (word problem) | 7/31/2006 |
Q: Big plane. A six-passenger lane cruises at 180 mph in calm air. If the plane flies 7 miles with the ...
A: Let w = wind speed 180 + w = speed of the plane with the wind 180 - w = speed of the plane against ...
|
| three consecutive integers | 5/13/2006 |
Q: Please help in explaning how to solve the following problem: Find three consecutive integers such ...
A: We can write three consecutive integers as n-1 , n and n+1. The sum of their squares must be 77 , so ...
|
| Solving word problems | 3/13/2006 |
Q: A cyclist traveled at a rate of 24 mph to visit a nearby town. The cyclist averaged 18 mph on the ...
A: Let s be the time it takes going out to the town and let t be the time for the return trip. He ...
|
| logarithms | 2/12/2006 |
Q: Need more help understanding steps of logs. equation is: log3(m+1) - log3(m-1) = log3 m I ...
A: First , log3(m+1) - log3(m-1) = log3(m+1)/(m-1) So now the equation becomes log3(m+1)/(m-1) = log3 ...
|
| Word Problem | 2/8/2006 |
Q: This questions is not that hard but, I still cannot figure out the equation to this word problem. ...
A: When John leaves at 11 am, Mary has already been traveling for two hours. That means that when John ...
|
| algebra 2 | 9/27/2005 |
Q: the diffrence between one-half of a number and one-sixth of the n umber is equal to ten more than ...
A: Let x be the number. The difference between one half of the number and one sixth of the number is ...
|
| inequalitys... | 7/27/2005 |
Q: What does the inequality 2x-4y<-6 look like on a graph? Where is it shaded? above or below the line? ...
A: I think the easiest way to understand this is to first solve the inequality for y. 2x - 4y < -6 ...
|
| On beyond quadratic | 6/29/2005 |
Q: I have one student who is extremely bright and always asks the most intriguing questions. When I was ...
A: Yes, there are formulas like the quadratic formula for the solutions of cubic and quartic polynomial ...
|
| conics | 5/26/2004 |
Q: classify the graph as a parabola, circle, ellipse, or hyperbola. then write the equation in standard ...
A: 1) 4x^2 + y = 3 y = -4x^2 + 3 You should recognize that the graph of this equation is a ...
|
| algebra | 3/28/2004 |
Q: In baseball a player's batting average in the ratio of hits to the number of times he or she has ...
A: To get a batting average of of .300 , you need the number of hits divided by the times at bat to ...
|
| cherry garcia word problem | 3/26/2004 |
Q: data from the label of Ben & Jerry's Cherry Garcia low fat frozen yogurt: serving size: 1/2 cup ...
A: Flavor Calories from fat Percentage of total calories Cherry Garcia 9x3=27 ...
|
| exponents | 2/25/2004 |
Q: i have some questions on exponents. 1) x^4 . x^-2 2) (6^2)^2 3) (2xy^3)^-2 4) (x^2y^2)^-1 5) 4x^-1y ...
A: 1) (x^4)(x^-2) = x^2 Add exponents when expressions are multiplied with the same base. 2) (6^2)^2 ...
|
