Mathematics - 29 June 2007

Im trying to figure this out...It seems so easy, but i cant figure it out!

Say you're selling and 7 items for $5 FLAT. How much is each item???

Ex: 7 apples for $5. Each apple cost=?

CALL ME STUPID [not literally] BUT I CANT FIGURE THIS OUT!

I keep getting something like 1.40 OR 980

NIEHTER make sense to me!

I'd consider you a genious if you get this.

2007-06-29 16:55:19 · 18 answers · asked by This Gurl 3

Given one of the terms, to find the additional terms, divide x+3 into the expression:

x^3 + 2x^2 - 5x -6 / x+3




Begin by dividing

2007-06-29 16:54:34 · 5 answers · asked by Anonymous

find the dimensions of the rectangle to the nearest thousandth.

Please help

2007-06-29 16:54:20 · 6 answers · asked by Bianca B 1

When i clean i use bleach a lot, and i know that it can be fatal. I did some research and found that the best amount of bleach to use should not excede 3.5 ppm, and that a few breaths of 1000 ppm could cause death.

2007-06-29 16:49:13 · 5 answers · asked by Grace 1

2007-06-29 16:45:12 · 3 answers · asked by maya 1

An open-top box is to be constructed from a 4 foot by 6 foot rectangular cardboard by cutting out equal squares at each corner and folding up the flaps. Let x denote the length of each side of the square to be cut out.
a) Find the function V that represents the volume of the box in terms of x.
Answer:
Function you are looking for is V = 4(3 - x)(2 - x)x = 4x(x -3)(x – 2)

b) Graph this function and show the graph over the valid range of the variable x..
Show Graph here.





c) Using the graph, what is the value of x that will produce the maximum volume?
Answer.

2007-06-29 16:25:56 · 4 answers · asked by minnesotaskeptic 1

2007-06-29 16:25:21 · 5 answers · asked by Grace 1

Please explain the step by step procedure to solve to solve this problem.

2007-06-29 16:22:20 · 6 answers · asked by tammy s 2

The sensitivity of a symptom is the probability that the symptom is present given that the person has a disease.

The specificity of a symptom is the probability that the symptom is not present given that the person does not have a disease.

Suppose the disease is lung cancer and the symptom is cigarette smoking. If we assume 87% of people with lung cancer and 20.9% of people without lung cancer are smokers. What are the sensitivity and specificity in this case? Can cigarette smoking be used as a diagnostic tool for predicting lung cancer? Why?

2007-06-29 16:21:27 · 2 answers · asked by summer 1

sin –t = –sin t, and

cos –t = cos t.
sin is an odd function, cosine is an even function
What does this mean? would you explain?

2007-06-29 16:17:52 · 2 answers · asked by liangjizong22 1

Most calculators have 2 different logs on them: log, which is base 10, and ln, which is base e. In computer science, digital computers are based on the binary numbering system which means that there are only 2 numbers available to the computer, 0 and 1. When a computer scientist needs a logarithm, he needs a log to base 2 which is not on any calculator. To find the log of a number to any base, we can use a conversion formula as shown here:

Using this formula, find . Round your answer to the hundredth's place.

2007-06-29 16:13:12 · 3 answers · asked by minnesotaskeptic 1

Solve: 4^(x + 2) = 200

2007-06-29 16:11:55 · 4 answers · asked by Anonymous

Solve: log2(x) + log2(x + 2) = 3

2007-06-29 16:10:47 · 2 answers · asked by Anonymous

Solve: log4(x^2) - log4(4x - 4) = 0

2007-06-29 16:09:13 · 5 answers · asked by Anonymous

I'm taking a quiz and the only thing it's giving me is "Given a standard normal distrubution find the percent of data that is to the left of 2.53." I've looked in my book and still can't find anything. Can anyone help?

2007-06-29 15:53:24 · 8 answers · asked by gods_sold_out_servent 2

determine the work done in winding up the last 30.0m of a 150.0 m long rope that has a weight of 2550N

2007-06-29 15:52:48 · 4 answers · asked by Anonymous

A rectangular painting with a width of x centimeters has an area of x^2 + 50x square centimeters. Find a binomial that represents the length.

2007-06-29 15:21:47 · 4 answers · asked by Anonymous

15x^2y^2 - 9xy^2 + 6x^2 y

2007-06-29 15:18:07 · 3 answers · asked by Anonymous

square root of (21x^3) x square root of (3x)=?

2007-06-29 15:16:50 · 5 answers · asked by Anonymous

Another company sells wrought iron umbrella trees. This company has fixed costs of $100,000/month. The cost in labor and material is $15 per umbrella sold per month. To sell x items, the price must be set at $50-0.3x, where x is in thousands of umbrellas sold per month. What price will maximize profit?
price=_______________

2007-06-29 15:09:23 · 2 answers · asked by Anonymous

2007-06-29 14:52:35 · 12 answers · asked by ElDarado05 2

2007-06-29 14:50:01 · 5 answers · asked by joseph j 1

2007-06-29 14:39:17 · 2 answers · asked by joseph j 1

4x^3-12x^2-9x+27
i recieved 2 answers that factors correctly. but which one is COMPLETELY factored? or are they both completely factored? the answers were:
(4x^2-9)(x-3) and
(2x+3)(2x-3)(x-3)
if u are just guessing, plz do not answer this question. im confused enough already.

2007-06-29 13:52:26 · 4 answers · asked by ahhhh? 1

2x+6=x+9

........ I'd wanna say x=5 but I am probably far off.

2007-06-29 13:49:06 · 10 answers · asked by Anonymous

Write a number to represent each of the following situations. Then write the opposite and a number to represent it.

1. A gain of 5 yards. Opposite:____ Number:____
2.A profit of $100. Opposite:____ Number:____
3. The absolue value of -6 is: ___ Number:____
4. For what values of (a) is the equation |a|=5 true?

Thanks for the help.

2007-06-29 13:43:15 · 4 answers · asked by Nerds Rule! 6

-2(t-5)+7t=3t-8

I think my main problem with Algebra is that I cannot visualize it. I failed it in high school yet I aced Geometry. I don't have enough patience for Algebra.

2007-06-29 13:38:10 · 11 answers · asked by Anonymous

I have awful heartburn at random times during the day, prominent when I run or exercise. painful stinging in back of throat.

2007-06-29 13:37:31 · 9 answers · asked by Anonymous

reduce the following to lowest terms

2007-06-29 13:16:33 · 3 answers · asked by linda c 1

Where do I start, please help me understand..thank you.

2007-06-29 13:09:20 · 6 answers · asked by Christ' Soldier 2