Mathematics - 11 July 2007

Can somebody help me find all zeros of the polynomial functions or solve the given polynomial equation. Use the rational zero theorem, describe rule of signs, and possibly the graph of the polynomial function shown by a graphing utility as an aid in obtaining the first zero or the first root.

2007-07-11 14:07:19 · 2 answers · asked by dirtyweapons2 1

Hello! This is my last math question to complete and it's driving me crazy! Here it is:

10/(x-2) - 1/2 = 3/(x-5)

If someone could help me I'd greatly appreciate it. Thanks!

2007-07-11 14:00:20 · 5 answers · asked by Jessica S 1

2007-07-11 13:50:49 · 6 answers · asked by gillybeb 2

1. How many times between 12 noon and 12 midnight do the minute and hour hands of a clcok line up exactly?
A. 10
B. 11
C. 12
D. 23
E. 24

2. The instruction on a can of oragnage juice concentrate state that the water should be mixed with the concentrate in the ratio of 3 to 1. If 12 liters of orange juice are needed, how many liters of concentrate need to be bought?

3. In a prehistoric village, rocks, stones, and pebbles were used as money. The relative values of the "coins" were:
1 rock= 7 stones
1 rock= 49 pebbles
If a man used 6 rocks to puchase a hide that cost 5 rocks, 2 stones, and 3 pebbles, how many change was he owed?

4. A job can be done in 25 hrs. by 6 people. How many people would be needed to do the same job in 8 or fewer hours?

2007-07-11 13:41:59 · 5 answers · asked by Celia 4

2007-07-11 13:41:49 · 14 answers · asked by ■ Jessie ■ 5

1. For a rectangle with area 289 to have the smallest perimeter, what dimensions should it have?

2. The cost of controlling emissions at a firm rises rapidly as the amount of emissions reduced increases. The following is a possible model, where q is the reduction in emissions (in pounds of pollutant per day) and C is the daily cost to the firm (in dollars) of this reduction.

c(q)=4900+90q^2
*What level of reduction corresponds to the lowest average cost per pound of pollutant? (Give the answer to two decimal places.)
*What would be the resulting average cost to the nearest dollar?

3.Hercules Films is deciding on the price of the video release of its new film. Its marketing people estimate that at a price of p dollars, it can sell a total of q copies. What price will bring in the greatest revenue?
q=220,000-10000p copies

2007-07-11 13:24:45 · 3 answers · asked by poncg004 1

2007-07-11 13:04:24 · 12 answers · asked by Skittles 1

Trying to measure flooring for my house.

2007-07-11 13:01:19 · 6 answers · asked by Anonymous

Can somebody help me find all zeros of the polynomial functions or solve the given polynomial equation. Use the rational zero theorem, describe rule of signs, and possibly the graph of the polynomial function shown by a graphing utility as an aid in obtaining the first zero or the first root.

2007-07-11 12:59:24 · 2 answers · asked by dirtyweapons2 1

Factor out the GCF from the polynomial.
24x8y9 - 40x3y5 + 28x5y3

4x3y3(6x5y6 - 10y2 + 7x2)
x3y3(24x5y6 - 40y2 + 28x2)
4(6x8y9 - 10x3y5 + 7x5y3)
4x3(6x5y9 - 10y5 + 7x2y3)

2007-07-11 12:51:04 · 3 answers · asked by Anonymous

2007-07-11 12:43:08 · 2 answers · asked by Gills 1

if 1/f =(u-1) ( 1/x -1/y )

express x in terms of the other variables.

2007-07-11 12:34:05 · 4 answers · asked by starcruiserGalaxy2029 2

Help!! I'm taking a test online...

2007-07-11 12:31:42 · 3 answers · asked by lyss61443 3

1.Minimize S = x + 15y with xy = 15 and both x and y > 0.


2.Minimize F = 3x2 + 3y2 with xy2 = 16


3.Maximize P = xyz with x + y = 60 and y + z = 60, and x, y, and z 0.


Please explain how to find the solution.

2007-07-11 11:43:44 · 3 answers · asked by gp1988 1

2007-07-11 11:34:37 · 11 answers · asked by Skittles 1

2007-07-11 11:29:06 · 9 answers · asked by Anonymous

i just need to no how 2 find the domain jus by nowing the the rules (fg) and (gf). thank you!

2007-07-11 11:15:56 · 1 answers · asked by Anonymous

If y^n = x^3n, where n, x, and y are positive integers, then what is x in terms of y?

a) ^3(root)y --> not 3(root)y. ex. ^3(root)27 = 3
b) (root) y
c) y/3
d) 3y
e) y^3

pls explain or show work

2007-07-11 11:13:44 · 4 answers · asked by ? 2

If r = 3 in. and h = 4 in., find the slant height and the lateral area of the right cone

2007-07-11 10:57:43 · 8 answers · asked by Anonymous

Although the November 1949 Kilauea Iki eruption on the island of Hawaii bean with a line of fountains along the wall of the crater, activity was later confined to a single vent in the crater's floor, which at one point shot lava 1900 ft straight into the air (a world record). What was the lava's exit velocity in feet per second? in miles per hour? (Hint: If v0 is the exit velocity of a particle of lava, its height t seconds later will be s = (v0)(t) - 16t^2 feet. Begin by finding the time at which ds/dt = 0. Neglect air resistance.)

PS: please use derivatives and show step by step! thanks!

i can't decide whether v0 should be a constant or a variable. i think it should be a constant, so i treated it as such and came up with "s' = v0 - 32t" for the velocity function. but now i can't figure out how to solve for either variable.

2007-07-11 10:48:00 · 3 answers · asked by salmonella_jr 3

Find the slope of the line passing through the points (2, –7) and (1, 0).
I'm lost on slopes. can someone explain? Thanks so much :)

2007-07-11 10:39:29 · 10 answers · asked by Anonymous

Can someone please tell me how to solve this?

2007-07-11 10:32:14 · 5 answers · asked by jared c 1

Find the radius of a circle with center (4,1) if a chord of length 4 sqrt of 2 is bisected at (7,4)?

2007-07-11 10:20:00 · 3 answers · asked by sweet_candy 2

Does the point (3,-4) lie on a circle whose center is at (-2,3) and passes through (5,8)?

what does "passes through means"?....

2007-07-11 10:13:03 · 10 answers · asked by sweet_candy 2

im in summer school for first semester geometry my test and my finla is tommarow im getting a 51 percent in the class i need sum advise on what key things to study today to pass the tests and pass the class what should i focus on that is the most important ? please give real answers no BS

2007-07-11 10:11:13 · 6 answers · asked by antelias 2

2007-07-11 10:03:55 · 36 answers · asked by Anonymous

2007-07-11 09:58:16 · 7 answers · asked by Anonymous

2007-07-11 09:54:48 · 9 answers · asked by bob b 2

...4...............?
------ = -----------------
x+2.......(x +2)(x+1)

please ignore the dots. thank you

2007-07-11 09:44:33 · 5 answers · asked by Anonymous

2007-07-11 09:41:16 · 5 answers · asked by Dr. Vargas 2