Mathematics - 30 September 2007

If ax2+bx+g with a not 0 and abg belong to real numbers(R) and dont have solutions in R can you prove that for xy(R)
(ax2+bx+g)(ay2=by+g)>0

2007-09-30 04:40:18 · 1 answers · asked by baby 3

1) Write the equation of the line with a slope of -1/3 and passing through the point (6, -4).
2) Write the equation of the line passing through the points
(-6,1) and (-4,2).

2007-09-30 04:29:16 · 3 answers · asked by princess 1

Solve the linear inequality. Other than Ø, use interval notation to express the solution set and graph the solution set on a number line.

4x + 3 < 39

a. [9, ¥)

b. (9, ¥)

c. (-¥, 9]

d. (-¥, 9)

2007-09-30 04:22:26 · 2 answers · asked by Anonymous

[Hint: Differentiate both sides of the equation h(x)*g(x)=f(x) and solve for h'(x).]

2007-09-30 04:00:36 · 2 answers · asked by Deutschjoe 3

Find all values of x at which the tangent line to the given curve satisfies the stated property.

I know to use the product rule to find F'(x), but then do I solve the numerator for x??? I just don't understand the question, maybe someone can explain... thanks

2007-09-30 03:51:35 · 2 answers · asked by Deutschjoe 3

Find N so that NM = I . How do i create an equation to find the matrix N?

the matrix of M is
1 2 0
2 1 0
0 2 1

From a previous question, i've found the matrix of N which is
0 4 0
0 0 4
4 0 0

2007-09-30 03:49:29 · 1 answers · asked by aMused 2

Find the limit

lim 2 - x / (x - 1)^2
x---->1

In words: Find the limit of 2 minus x divided by x minus 1 squared, as x approaches 1.

2007-09-30 03:35:41 · 2 answers · asked by plastickfourk 1

A 30 kg child slides down a playground slide from a height of 1.5 m above the bottom of the slide. If the child's speed at the bottom is 3.1 m/s , what is the work done by the nonconservative forces?
Please show me step-by-step thanks
Thanks

2007-09-30 03:33:14 · 2 answers · asked by Anonymous

I do not know how to factorize this in the slightest

2007-09-30 03:33:09 · 3 answers · asked by Ar J 2

y=? The answer should be in slope intercept form.... y=mx+b

2007-09-30 03:21:02 · 2 answers · asked by eclipsegt_01_03 2

7/2y+17/2=1/2y-1/2

2007-09-30 02:36:31 · 12 answers · asked by SweetMelissa990 1

2007-09-30 02:35:31 · 3 answers · asked by Gillbates 2

1) Write as a single interval if possible: (3, ∞)∪[11, ∞)

2) Professor Dutuit gives only a mid-term exam and a final exam. The semester average is computed by taking of the mid-term exam score plus of the final exam score. To get a C, Max must have a semester average between 70 and 79 inclusive. If Max scored 100 on the mid-term exam, what range of scores on the final exam would give him a C ? Show your work.

3) The formulas
r = 0.07t + 2.27
and
w = 0.08t + 2.48
give an approximate model for the yearly average price r of a bushel of rye and w of a bushel of wheat over the past five years, where t is the number of years since 1994. What is the first year in which the price of rye exceeded $2.48/bu and the price of wheat exceeded $2.56/bu?

4) Audrey has 32 dimes and quarters in her piggy bank with a total value of $6.50. How many of the coins are dimes and how many are quarters?

thank you soooo much!!!! I appreciate all that help me with this! It's gibberish to me. :-)

2007-09-30 01:47:41 · 4 answers · asked by Vonnie 2

I know its not zero, or either infinity, and am now at a complete loss

2007-09-30 01:25:17 · 5 answers · asked by Ar J 2

RULES:
You must show your working and thats all! Have fun!
Javis works in an garage for £9 an hour. If he works on saturday he is paid time and a quarter. If he works on sunday he is paid time and a half. Last weekend Javis worked six hours on Saturday and five hours on sunday. How much was Javis paid last weekend altogether.
NOTE: 'Time and a half' means for every hour you work you get paid one and a half hours.
Good Luck!!

2007-09-30 00:19:57 · 6 answers · asked by Anonymous

After the help of 'gudspeling' on my last question i am now stuck on a similar question but with fractions rather than numbers. the fractions are 1/5, 1/14, 1/29 ,1/50, 1/77. I have absolutely no idea how to do this question so please could you help (and also still bear in mind that i am only 13 can you put it in simple terms please.

2007-09-30 00:13:09 · 2 answers · asked by JONATHAN 2

2007-09-30 00:06:33 · 1 answers · asked by Hugh 2