Mathematics - 8 July 2007

i'm not grasping this ..i need a carpet to cover 15 feet x 11 feet whats the area as all prices sat per sq metre.sorry old and dim here

2007-07-08 08:41:10 · 5 answers · asked by trustmemaggie 1

2007-07-08 08:36:50 · 2 answers · asked by D D 1

A plane is coming down for a landing. The angle from the horizontal is 25degrees. The plane is 367m from its landing point along the ground. How high is the plane?

2007-07-08 08:32:04 · 4 answers · asked by Physics 101 1

Assume that a violin string of length 10 is held so that at time zero its shape is given by the function:


f(x) = (x/4) at (0< x < 4), (-x/6 +10/6) at (4< x <10)

and released, so that its initial velocity is zero. Find the function u(x,t) that describes the height of the point x of the string at time t. Use 5 terms of your series to determine the position of the midpoint of the string at time t =5.

We only barely covered partial differentials in class so any help would be useful.

2007-07-08 08:31:48 · 1 answers · asked by Nate-dawg 2

In February, you have a balance of $270 in your bank account. Each month you deposit $45. Let January = 1, February = 2, and so on. Write an equation for this situation. Use the equation to find the balance in June.


y – 270 = 45(x – 2) ; $450
y = 45(x – 4); $270
y = 45(x – 4); $180
y – 270 = 45x; $45

2007-07-08 08:19:30 · 5 answers · asked by Chealsea Y 1

2007-07-08 07:48:30 · 4 answers · asked by Romeotheriault 1

Sara take 3hr longer to paint a floor than it takes Kate. When they work together, it takes them 2hrs. how long would each take to do the job alone.

2007-07-08 07:44:12 · 9 answers · asked by jesis332 1

2007-07-08 07:36:14 · 8 answers · asked by lykastar 3

A triangular tile measures ½ ft, ¾ ft and 1 ft on its three sides. Is it a right triangle? Explain.

2007-07-08 07:30:52 · 5 answers · asked by wastedmemoriez 1

The length of a rectangle is (x^2-2x-1) feet and the width is (2x + 3) feet. Express the area as a polynomial.

A right triangle has one leg that is x feet long and another leg that is x+2 feet long. The hypotenuse is 2x-7 feet long. What are the sides of the triangle? (Round to 2 decimal places.)

2007-07-08 07:27:57 · 5 answers · asked by wastedmemoriez 1

Adult tickets for a play cost $14 and child tickets cost $4. If there were 27 people at a performance and the theater collected $298 from ticket sales, how many children attended the play?

2007-07-08 06:59:01 · 5 answers · asked by Anonymous

How i can do it?

2007-07-08 06:56:09 · 1 answers · asked by must 3

It's an optimization problem for Calculus so derivates must used. Similar to related rates.

2007-07-08 06:45:11 · 2 answers · asked by Gills 1

2007-07-08 06:42:48 · 7 answers · asked by tntrohman 1

If area of circle is 49pi, find circumference in terms of pi

2007-07-08 06:31:05 · 13 answers · asked by hpdc90 1

The situation:

A person has a subscription which allows them 3 licenses for 12 months @ $6500/12mo

After 3 months, they upgrade to a 5 licenses per 12-month plan @ $9000/12mo.

* They pay only the difference between the plans ($2500) to make a total of $9000 *

(the only 2 variables that change are the total/ price and the number of licenses)

How long does their plan now last?

Please SUPPLY THE EQUATION and NOT JUST THE ANSWER!

Bonus: Supply a formula to calculate what they'd pay to upgrade so their plan lasts EXACTLY 12 months.

2007-07-08 06:18:03 · 1 answers · asked by designer 1

2007-07-08 06:04:04 · 3 answers · asked by Anonymous

with a voltage follower, if the input draws a very small current and the output can provide a much larger current, where does the extra current come from? All my book says is that this is due to a very high input impedence and a very low output impedence. Can anybody explain this in more detail?

2007-07-08 06:01:24 · 3 answers · asked by eazylee369 4

I DO NOT just want the answer. Please put your steps!

Factor the polynomial
48c5 + 168c4 + 147c3 completely.

A. 3c3(4c + 7)2
B. 3c2(4c + 7)2
C. 2c3(4c + 7)2
D. 4(5c + 7)2

2007-07-08 06:01:14 · 5 answers · asked by how's it going 1

Use grouping to factor the polynomial
pg2 - pb2 - vg2 + vb2.

A. (g - b)(g - b)(p - v)
B. (g - b)(g - b)(p + v)
C. (g + b)(g + b)(p - v)
D. (g - b)(g + b)(p - v)

2007-07-08 05:57:52 · 7 answers · asked by how's it going 1

How do you find the height of a trapezoid that doesn't show the number of its height but sides and a 45 degree?

2007-07-08 05:41:31 · 2 answers · asked by hpdc90 1

A Coin is unique in that the outer edge is gold while the inside is silver. Assuming both sides of the coin are identical, and a line tangent to the inner circle is 23 mm from edge to edge of the coin, and excluding the edge of the coin in the calculation, what is the surface area of gold on the coin, in square millimetres?




How do I solve this?

2007-07-08 05:38:12 · 4 answers · asked by Anonymous

Factor: y2 - 16

2007-07-08 05:30:04 · 8 answers · asked by andy s 2

Solve for 'a' using the elimination method:

3a + 4b = 2
4a - 3b = -14

2007-07-08 05:28:45 · 4 answers · asked by andy s 2

i suck at this

5a2 + 3a - 2

2007-07-08 05:19:39 · 6 answers · asked by andy s 2

Determine whether the trinomial below is a difference of squares, a perfect square trinomial, just factorable, or nonfactorable.
x2 - 10x + 25

A. difference of squares
B. perfect square trinomial
C. nonfactorable
D. factorable

2007-07-08 05:19:31 · 3 answers · asked by how's it going 1

if u like math try it if you want to figure it out type me somthing! thanx!

2007-07-08 05:10:25 · 9 answers · asked by alice b 1

how do I find the surface area of a shape swept out by the curve x^2 rotated through 360 degrees about the x axis. Between x=1 and x=2. Imagine it like a lampshade on its side. I want the surface area of it.

This is not a homework, I was just messing about and realised that I couldn't do it and now it is bugging me.

I know that I need to find the length of the curve by Integrating sqrt(4x^2+1)dx. So my answer is found by Integrating 2Pi*x^2*sqrt(4x^2+1)dx using the limits x=1 and x=2.

Now for this I have used trigonometric substitution and end up needing to integate
(Pi/4)[(tanT)^2] [(secT)^3]dx

Note: theta=T

This is where I get stuck how do I integrate this? Have I gone about it the right way?

2007-07-08 05:02:52 · 6 answers · asked by eazylee369 4

Thank you!

2007-07-08 04:53:46 · 2 answers · asked by ? 1

2007-07-08 04:47:52 · 14 answers · asked by d@dz 5