Mathematics - 5 August 2007

You have a square, but on the top of the square you have a extra little edge. The measurements of the whole thing are 15ft by 15ft at the top where you have the extra part and the the rest of the square is 40ft by 50 ft. How would you find the area for this weird square?

2007-08-05 08:52:27 · 6 answers · asked by thecookfamily00 1

2007-08-05 08:46:31 · 2 answers · asked by chimstr 1

A) 3.6
B) 10
C) 36
D) 216

Explain your answer.

2007-08-05 08:42:19 · 11 answers · asked by Anonymous

these are possible answers that the response can be checked with....


a. (3e^3 - 2e^2)i + (e - 3e^3)j + (2e^2 - e)k
b. (3e^3 - e)i + (2e^2 - 3e^3)j + (e - 2e^2)k
c. (e - 2e^2)i + (3e^3 - e)j + (2e^2 - 3e^3)k
d. (2e^2 - e)i + (3e^3 - 2e^2)j + (e - 3e^3)k
e. (2e^2 - 3e^3)i + (e - 2e^2)j + (3e^3 - e)k
f. (e - 3e^3)i + (2e^2 - e)j + (3e^3 - 2e^2)k
g. none of these

2007-08-05 08:35:30 · 2 answers · asked by Olivia 4

Solve.
The amount of time it takes a swimmer to swim a race varies inversely as the average speed of the swimmer. A swimmer finishes a race in 500 seconds with an average speed of 3 feet per second. Find the average speed of the swimmer if it takes 375 seconds to finish the race.

5 feet per second
3 feet per second
4 feet per second
6 feet per second



Problem 2

Solve.
The amount of water used to take a shower varies directly as the amount of time that the shower is in use. A shower lasting 22 minutes requires 15.4 gallons of water. Find the amount of water used in a shower lasting 6 minutes.

4.9 gallons
3.5 gallons
4.2 gallons
132 gallons

2007-08-05 08:32:05 · 5 answers · asked by Anonymous

possible answers to choose from....

a. 1/15
b. -1/10
c. -4/15
d. -13/30
e. -3/5
f. -23/30
g. -14/15
h. none of these

2007-08-05 08:27:00 · 2 answers · asked by Olivia 4

The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 time the length of the base. If the perimeter is 29 cm find the lenght of one of the eqaul legs.

Would I start with 4x-8=29

and woul the answer be 4,5,11 or 12cm???

2007-08-05 08:26:01 · 4 answers · asked by marianne d 2

For the force field F(x,y,z)=(ze^x cos y) i - (ze^x sin y) j + (e^x cos y) k, calculate the work done by F on an object moving along a curve from (0, 0, 0) to (2, π/2, 1)


these were the possible answers given....

-2
-2 - 4e^2
0
-2e
-3e^2
-4e^2

2007-08-05 08:16:43 · 1 answers · asked by Doug 2

An open top rectangular box has a volume of 729/2 cubic feet. If the dimensions are calculated so as to minimize the outside surface area (bottom and four sides), then the height of the box will be how many feet?.

possible answers....

1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
or is it none of these

2007-08-05 08:10:07 · 3 answers · asked by Olivia 4

Supposedly this riddle is world-wide known as "unsolveable". The object is to find out why the hotel owners profit is one dollar short. HERE WE GO.........There was a hotel owner who charged his 3 of his guests $10 each for each to stay at the hotel for one night. From that he earned $30 dollars. He gave the bellboy $5 out of the $30 he collected from the guests and told the bellboy to keep $2 dollars for himself and to give each guest back $1 dollar. So now the 3 guests are being charged $9 each. So you take the $9 x 3 guests that equals $27 dollars plus the bellboys $2 ......... that equals $29. Where did the other dollar go???

2007-08-05 08:05:00 · 8 answers · asked by Anonymous

2007-08-05 08:03:11 · 9 answers · asked by Silly Boy 1

possible equations.....

x + 2y + 3z = 6
4x + y + 6z = 21
x + 3y + 2z = 11
3x + y + z = 14
4x + 4y + 3z = 19
3x + 4y + 3z = 14
or is it none of these?

2007-08-05 08:03:04 · 2 answers · asked by Anonymous

I have tried working this problem myself but I'm stuck. I hope someone can help. Thank you

The length of a rectangle is 3 cm more than 4 times its width. If the area of the rectangle is 85 cm2, find the dimensions of the rectangle to the nearest thousandth.

2007-08-05 07:59:53 · 7 answers · asked by Jacqueline E 2

How could you find a point in the x-y plane where the function listed has a local minimum.

f(x, y) = 4x^2 + 3xy + 5y^2 + x + y + 1

If there is such a point but it is not listed, choose answer I. If there is none, answer J.


these are the solutions to choose from in the back of the book...

a. (-9/79, -7/79)
b. (-2/19, -3/38)
c. (-7/71, -5/71)
d. (-3/32, -1/16)
e. (-1/11, -3/55)
f. (-1/11, -1/22)
g. (-3/31, -1/31)
h. (-1/8, 0)
i. There is a local minimum but it is not listed.
j. There is no local minimum for this surface.

2007-08-05 07:55:24 · 3 answers · asked by Olivia 4

2007-08-05 07:45:38 · 3 answers · asked by Anonymous

Acme Power has an order for 6800 emergency power plants that can be produced at Acme's plant in Lincoln, Nebraska or at its plant in Tucson, Arizona. If L is the number of units produced in Lincoln and T is the number of units produced in Tucson, find the number of units that should be produced at the Lincoln plant to minimize the total cost if the cost function in dollars is given by C= 0.25L^2 + 0.3T^2 + 16L + 160T.

a. 1460
b. 1960
c. 2040
d. 2460
e. 2640
f. 2960
g. 3240
h. 3840
or is it none of these?

2007-08-05 07:37:10 · 3 answers · asked by Olivia 4

2007-08-05 07:20:08 · 4 answers · asked by Anonymous

Find the velocity vector, V(t), evaluated at t= 1, of a particle that moves along the curve C given by the vector-valued function r(t)= <4t, -5t^2, 3t^3> V(1) =

it could be one of the following....
<4, -6, 15>
<3, -8, 15>
<5, -6, 12>
<4, -10, 9>
<3, -10, 12>
<5, -8, 9>
or none of these

2007-08-05 07:13:44 · 2 answers · asked by Jake 1

how are they any difrent from a regular foot

2007-08-05 07:12:01 · 14 answers · asked by Anonymous

I (x) = 2x +3

state the domain

thak you

2007-08-05 07:11:31 · 2 answers · asked by quepid622 1

Solve For Θ

0 ≤ Θ < 360

2007-08-05 07:04:34 · 5 answers · asked by Bobby 1

possible sets of parametric equations to choose from....

a. x = 2 + t, y = 1 + 3t, z = 3 - 2t
b. x = 2 + t, y = 1 + 4t, z = 3 - 2t
c. x = 2 + 2t, y = 1 + 3t, z = 3 - 2t
d. x = 2 + t, y = 1 + 4t, z = 3 - t
e. x = 2 + t, y = 1 + t, z = 3 + t
f. x = 2 + 2t, y = 1 + 4t, z = 3 + 3t
g. none of these

2007-08-05 07:03:47 · 2 answers · asked by Ed 1

Solve For Θ

0 ≤ Θ < 360

2007-08-05 07:03:40 · 3 answers · asked by Bobby 1

If a = <4, 1, 3> and b = <-2, 2, 1>, then proj [sub]b a =

these are the possible answers to choose from....

a. (-1)<-2, 2, 1>
b. (-1/3)<-2, 2, 1>
c. (-2/9)<-2, 2, 1>
d. (-1/9)<-2, 2, 1>
e. <0, 0, 0>
f. (2/9)<-2, 2, 1)
g. (1/3)<-2, 2, 1>
h. <-2, 2, 1>
i. none of these

2007-08-05 07:02:16 · 1 answers · asked by Doug 2

Solve For Θ

0 ≤ Θ < 360

2007-08-05 07:01:32 · 1 answers · asked by Bobby 1

these are possible answers to choose from....

a. -1/(4t^3)
b. 1/(4t^3)
c. 1/(2t^3)
d. -1/(2t^3)
or None Of These?

2007-08-05 06:57:04 · 6 answers · asked by Olivia 4

equations to choose from....

a. 4x^2 + 9y^2 - 8x + 18y - 23 = 0
b. 9x^2 + 4y^2 - 18x + 8y - 23 = 0
c. 4x^2 + 9y^2 + 8x - 18y - 23 = 0
d. 9x^2 + 4y^2 + 18x - 8y - 23 = 0
e. 4x^2 + 9y^2 - 8x - 18y - 23 = 0
f. 9x^2 + 4y^2 - 18x - 8y - 23 = 0
g. none of these

2007-08-05 06:55:45 · 1 answers · asked by Olivia 4

6n=2/3(5n-2)

2007-08-05 06:50:26 · 8 answers · asked by Jay 2

The polar equation r^2 - 2r(sin q) = 3 corresponds to which, of the rectangular equations listed.

possible answers to choose from....

a. (x + 1)^2 + (y + 1)^2 = 4
b. (x + 1)^2 + (y - 1)^2 = 4
c. (x - 1)^2 + (y + 1)^2 = 4
d. (x - 1)^2 + (y - 1)^2 = 4
e. x^2 + (y + 1)^2 = 4
f. x^2 + (y - 1)^2 = 4
g. (x + 1)^2 + y^2 = 4
h. (x - 1)^2 + y^2 = 4
i. none of these

2007-08-05 06:48:13 · 3 answers · asked by chris 2

A Ferris wheel has a radius of 25 meters and completes one revolution in 4 minutes. Correct to the nearest tenth of a meter per second, what is the average speed of someone in a car at the rim of the wheel?

these were the possible answers that were given....

0.5 m/sec
0.6 m/sec
0.7 m/sec
0.8 m/sec
0.9 m/sec
1.0 m/sec
or none of these

2007-08-05 06:45:18 · 6 answers · asked by chris 2