# The One and Only One

### Help me pick a casual shoe for a guy?

I want to get a casual shoe/chukka to wear with jeans and khakis. I have a pair of suede shoes already and I prefer leather more than suede. A lot of people like the clarks desert boots, but I can't find them for less than 100 dollars, at least the color I want.

Here is what I found so far that I like, but then my fashion sense might be questionable:

No reviews/skeptical:

http://www.zappos.com/dr-scholls-dapper-brown

Never had shoes in this style. Will they go well with jeans?

http://www.zappos.com/dr-scholls-stance-brown

Not sure if these can be considered casual shoes/could wear with jeans

http://www.zappos.com/florsheim-vance-crazy-horse-...

Do they look good?

2 AnswersFashion & Accessories9 years ago### Nova Extreme vs Fishneedit vs Odyssea?

I'm shopping for a 30" light fixture for my 20H tank (will upgrade to 29g soon) but there are too many options. Both the nova extreme and the fishneedit fixtures cost the same - $80. The odyssea fixture has 4 bulbs and it costs $65.

From what I read the odyssea light fixtures have the worst reflectors. How do the reflectors compare for the nova extreme and fishneedit ones?

3 AnswersFish10 years ago### Half size or one full size smaller?

I bought a pair of adidas and they are too big on me. They are 11.5, with my socks on i can slide my thumb in and out easily. What size should I return them for 11 or 10.5?

2 AnswersFashion & Accessories1 decade ago### 15g tank stock. 12 neon tetras + 6 cherry shrimps?

Hi there,

I have a 15gallon tank. Lightly planted, under 45w of light 8 hours a day + diy CO2. Will this stock be okay? Or is it too much for the tank? Feel free to add any suggestions regarding the stock.

3 AnswersFish1 decade ago### Stocking a 15g tank with 10 neon tetras and...?

I was wondering what else I can put in my 15 gallon tank with the neon tetras. I noticed as I was vacuuming the substrate, that a lot of granules went down uneaten. So I was thinking if it was a good idea to say... get some bottom feeders, or snails, or shrimps...

I have some plants in my tank - not heavily planted. I feed my neons tropical crisps, granules, dried shrimp, and bloodworms. They seem to accept the bloodworms more readily than the rest of the food. So I might be getting flakes next time I go to petco.

7 AnswersFish1 decade ago### Surface integral of x^2+z^2=4?

Consider the surface S consisting of the portion of the graph of x^2+z^2 =4 lying over the region R in the x,y plane where 0<=x<=2 and 0<=y<=2-x.

I dont know how to do this as the function is not f(x,y)... i tried parametrizing x,y,z and taking the cross product but somehow that was wrong.

1 AnswerMathematics1 decade ago### Parametrization of a sphere?

Find the parametric equations (x = ..., y =...., z=....) of the sphere:

(x-2)^2 + (y+2)^ + (z-4)^2 = 4

I know how to parametrize a sphere centered at the origin, but I cant seem to figure out how to do it for one thats it NOT centered at 0,0,0

2 AnswersMathematics1 decade ago### Absolute max/min in f(x,y)=(x^2+2y^2)e^(-x^2-y^2)?

Absolute max/min in f(x,y)=(x^2+2y^2)e^(-x^2-y^2) in circle x^2+y^2=4?

I found the partial derivatives and set them equal to zero but I dont know how to solve for them. Help.

6 AnswersMathematics1 decade ago### Absolute max/min in f(x,y)=(x^2+2y^2)e^(-x^2-y^2)?

Absolute max/min in f(x,y)=(x^2+2y^2)e^(-x^2-y^2) in circle x^2+y^2=4?

I found the partial derivatives and set them equal to zero but I dont know how to solve for them. Help.

1 AnswerMathematics1 decade ago### Volume problem using chain rule?

The radius of a right circular cone is increasing at a rate of 5 inches per second and its height is decreasing at a rate of 5 inches per second. At what rate is the volume of the cone changing when the radius is 20 inches and the height is 10 inches?

2 AnswersMathematics1 decade ago### Limit of (2x^2)/(x^2+y^2) as (x,y) -> (0,0) along y=mx?

Limit of (2x^2)/(x^2+y^2) as (x,y) -> (0,0)

The answer is DNE because when x is fixated and y is fixated, they give different answers. But I don't know how to calculate it through the line y=mx. Help?

1 AnswerMathematics1 decade ago### Find parametric equation of intersection between x^2+y^2=9 and y+z=2?

Find parametric equation of intersection between x^2+y^2=9 and y+z=2

The answer at the back of the book is:

x=3cost, y=3sint, z = 2-sint

I know you are supposed to change x^2 + y^2 to sin(t)^2 + cos(t)^2 but i dont know how to deal with the 3.

2 AnswersMathematics1 decade ago### Find the arclength of the curve(t) = <(7√2)t, e^(7t), e^(-7 t)>?

Find the arclength of the curve(t) = <(7√2)t, e^(7t), e^(-7 t)> where 0 < t < 1.

So I used the arc length formula and got int √ (49 + 49e^(14t) + 49e^(-14t) ) the only thing that occurs to me is to factor out the 49 to make the integral look like 7√(1+e^(14t)+e^(-14t)) ... im stuck after this..

2 AnswersMathematics1 decade ago### Arc legnth of r(t)= ( 3t, -5sin(t), -5cos(t))?

Find the length of the given curve:

r(t)= ( 3t, -5sin(t), -5cos(t))

where -1 < t < 1.

When I use the arclength formula integral of (f'(x)^2+f'(y)^2+f'(z)^2)^(1/2) the sin^2 + cos^2 seem to = 1 and I end up with... int sqrt(9+25(1)) but the answer is wrong. help?

2 AnswersMathematics1 decade ago### Equation of plane perpendicular to two others?

Whats the plane that passes through the point (-2,5,-5) and is perpendicular to both x+2y-5z = 5 and 3x+5y+5z = 19.

1 AnswerMathematics1 decade ago### Parametric x=5sin(5t) and y=9cos(5t)?

Find a Cartesian equation relating x and y corresponding to the parametric equations

x=5sin(5t)

y=9cos(5t)

where P(x,y) is a polynomial in x and y such that the coefficient of y^2 is 25.

All I know is that you can sub x and y by using the identity sin^2 + cos^2 = 1 but in this case the inside of sin and cos is 5t. So i keep getting the wrong answer.

1 AnswerMathematics1 decade ago### Find a vector U that is parallel to the yz-plane and perpendicular to the vector V = <-1,0,-5>.?

Find a vector U that is parallel to the yz-plane and perpendicular to the vector V = <-1,0,-5>.

2 AnswersMathematics1 decade ago### Finding vector parallel to plane?

Find a vector U that is parallel to the yz-plane and perpendicular to the vector V = <-1,0,-5>

2 AnswersMathematics1 decade ago### Line intersecting a plane problem?

The line L(t) = <12+4t,12+5t,3+3t> intersects the plane x+5y+5z = -1

at what point and at what T does the line interesect the plane?

1 AnswerMathematics1 decade ago### Equation of a plane problem.?

Let P be the plane in space that intersects the x-axis at 5, the y-axis at 2, and the z-axis at 3. Find a vector V that is perpendicular to P.

Hint: If you can find a vector perpendicular to two vectors in the plane, it will be perpendicular to all of them. Can you find two vector in this plane?

2 AnswersMathematics1 decade ago