Mathematics - 30 August 2007

trouble on it

2007-08-30 14:07:14 · 5 answers · asked by lari b 1

2007-08-30 14:06:24 · 5 answers · asked by lala haha gaga mama 2

if a problem reads

A professional baseball player believes that he is a good hitter, but his current batting average is only .250. That is he has only gotten hits in 25% of his at-bats. Find the probability that the player who really is a .250 hitter will get at least 18 hits in his next 50 at-bats

Now,
n=50
x=18
Probability of success or failure=.50

Do I include de .250 somewhere? or not?

2007-08-30 13:56:26 · 2 answers · asked by ABC 4

Write equations of two lines that satisfy each description.
a. perpendicular and one is vertical
b. paralled and neither has a y intercept.

2007-08-30 13:54:29 · 3 answers · asked by Ballerina 5

can you please help me!!!??

2007-08-30 13:51:13 · 6 answers · asked by gyrl89 1

The limit as t approaches 2 of:
(t^3 + 3t^2 -12t +4)/(t^3-4t)

When I plug in 2 I get 0 over 0. I know this needs to be factored. If it helps, I know the answer is 3/2.

2007-08-30 13:48:43 · 3 answers · asked by Anonymous

-5+(-4) and tell me how you get the answer as i'm not understanding this math
thank you

2007-08-30 13:45:51 · 8 answers · asked by Anonymous

need help in this question...
intergrate by parts not by substitution..
thankyou

2007-08-30 13:33:12 · 1 answers · asked by Anonymous

Phoenix fabrics had five odd pieces of fabric that it put on sale for $120. The pieces measure 1 3/4, 2 1/8 yard, 3 3/8 yard, and 2 1/4 yard. What was the average selling price per yard?

2007-08-30 13:21:08 · 8 answers · asked by Anonymous

2007-08-30 13:17:17 · 10 answers · asked by Anonymous

solve for x:
x^2 - 3x - 10 > 0

2007-08-30 13:17:16 · 3 answers · asked by cow 1

Solve and Graph...

2007-08-30 13:13:38 · 7 answers · asked by blessed 1

If log [little 2 at the bottom] x = 5
what is x?

2007-08-30 13:07:23 · 6 answers · asked by cow 1

How many lines are concurrent at each point?

2007-08-30 12:57:54 · 1 answers · asked by simbainkempner 1

how do u simplify 15ax/3xz

2007-08-30 12:55:18 · 3 answers · asked by Anonymous

You may observe a precipitate when

* A crystal of solute is added to a supersaturated solution.

* Excess solute is added to a saturated solution.

* The solute does not dissolve in the solvent.

* All of the above.

* None of the above

2007-08-30 12:50:39 · 1 answers · asked by tevOoOoOo 1

I don't want to drop out! But,math is just difficult.I went to a terrible poor teaching skill private school through middle now in high school i have 3 math classes,I'm a current Junior.I also believe I have LD/math phobia and Dsycalculia.There's a lot more towards this if you want the full story please check,my questions around the third page.
how can i restart to learn math again,how long will it take.I'm currently taking algebra 2,intensive math and retaking Geometry for night school.But,I'm having difficulties in arithmetic,What should i do?I'm suffocating.I don't want to give up..

2007-08-30 12:49:09 · 5 answers · asked by Jessie 1

please explain each step and show the work. thanks!

2007-08-30 12:48:59 · 4 answers · asked by Anonymous

2007-08-30 12:41:53 · 5 answers · asked by Anonymous

A plain circle ' O ' is in one dimension, a sphere is three dimensions, is a Mobus strip a two dimensional circle/sphere? Is a Klein bottle a two dimensional surface or the first instance of a true surface? (by def a surface has x & y dimensions )
Do these forms carry on into more dimensions?
Please keep it simple, I'm only the question carrier!!!

2007-08-30 12:35:19 · 3 answers · asked by Michael K 1

Solve for x
1.12^(2x+3)=6^(2x+3)
2.10^(3x)=5e^(x-2)
3. 4^(2x)=2(5)^(x-3) I forgot how to do these ones if you could help me i would greatly appreciate it

2007-08-30 12:33:38 · 2 answers · asked by Matthew B 2

express in a single logarithm

ln(a + b) + ln(a - b) - 3 ln(c)
e^(a+b)+e^(a-b)-3e^(c)
(a+b)(a-b) cancel each other?
leaving 3e^(-c)?
or is my thought not correct?

2007-08-30 12:24:01 · 3 answers · asked by m_carl 1

The class I am in right now is mixed with the BC calculus and the teacher wants the AB kids to learn BC stuff as well. The problem is if I learn both I'm afraid I might fail the class because just doing AB seems easier. Should I just take calculus in high school or learn it in college? Will this make me look bad? Please help.

2007-08-30 12:20:14 · 9 answers · asked by crimsonxskies 1

2007-08-30 12:09:08 · 5 answers · asked by Anonymous

Find the domain of f:

f(x)=ln(6-6x^2)

2007-08-30 12:07:04 · 2 answers · asked by Lauren 1

Write the answer in standard form.

2007-08-30 12:01:22 · 7 answers · asked by bealsey1 2

Find (-3+5i)-(-4+6i)

2007-08-30 11:59:43 · 3 answers · asked by bealsey1 2

A pyramid has a rectangular base 10 cm by 25 cm and four triangular faces; two opposing faces both with altitude 13 cm and the other two faces with altitudes of 20 cm and 15 cm. What is the volume of the pyramid, in cubic cm?

It's for Math Counts. Please do not solve it for me, because I want to solve myself. Instead, explain the steps to me, such as using examples.

Please list the steps too.
Such as 1) Add all altitudes and find average, etc...

I will choose a best answer if it is the one that helps me the most. Thank you~

2007-08-30 11:57:48 · 2 answers · asked by Nyan 2

(3x^2y + 4z^2y) - (-9x^2y + 11z^2y) + (7x^2y + 11x^2y)

2007-08-30 11:55:55 · 9 answers · asked by shellyeph 1

2 x 2 matrix

find as many square roots as you can of A= top column 4 0 bottom column 0 9


hint: if A = top column a b bottom column c d
c d
write the equations that a,b,c,d would have to satisfy if A is the square root of the given matrix

2007-08-30 11:52:59 · 1 answers · asked by Shukie L 1