Mathematics - 27 November 2007

the question is:::

A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 38 ft/s2. What is the distance covered before the car comes to a stop?

please explain w/ answer please!! thanky you

2007-11-27 10:50:16 · 3 answers · asked by Anonymous

Ok, if someone could also show me how to type fraction bars it would also help so here we go. 6 over 13-b is = to 4 over 2-o.5b
Ok thanks for the help best answer goes to the best answer!

2007-11-27 10:43:13 · 6 answers · asked by Anonymous

How do you do these inverses. can you please explain each problem so I know how to do them in the future?? Thanks..

g(x) = (4/3)x - 7/3

h(x) = (18x + 2)/10

f(x) = (2/9)x - 1/9

2007-11-27 10:17:59 · 5 answers · asked by Jaz 'ma' Taz 2

Calculate the approximation for the given function and interval

L5, f(x)=x^2+3|x| [-3,2]

can someone explain how to do this?

I'd greatly appreciate it. Thanks.

2007-11-27 10:10:33 · 1 answers · asked by yefimthegreat 1

how would one go about solving a logarithmic problem with logarithms that have different bases? for example:

(since i don't know how to make the little numbers just assume the number immediately following the log is little)

log3 9 - log5 125 + log7 49 - log11 1 = ?

how can i solve a problem like this?

2007-11-27 10:08:07 · 3 answers · asked by Anonymous

A bag contains a total of 24 red and green pappers. the probability of reaching into the bag and choosing a red pepper is 2/3. How many peppers of each color are in the bag?

2007-11-27 09:53:53 · 2 answers · asked by Anonymous

Please help, What does this mean?

Sample Problem.

7-24-25

What does it want me to do.
Due in one day and need help bad.
Google doesn't help and my parents can't do this stuff.

2007-11-27 09:50:33 · 3 answers · asked by Anonymous

Estimate definite intergral of ∫√x dx, a = 0, b = 1, using lower sum with 4 partitions.

Not sure how to approach this problem...

2007-11-27 09:41:56 · 1 answers · asked by Anonymous

Math question.

2007-11-27 09:32:02 · 7 answers · asked by Anonymous

okey so the birthday paradox
i know that it states that within a random group of like 23 people that there is a 50 percent chance two pple will have the same birthday but idk if the number 23 is right ive check tons of pages n they r all different
i know its in the 20 but im not sure what number is right???

What is the real number????????

2007-11-27 09:28:30 · 8 answers · asked by Peach Mango 3

sqrt ( 4n^2+3n+3) -2n * sqrt (4n^2+3n+3) +2n ...how does it simplify to 3n+3?

2007-11-27 09:26:50 · 5 answers · asked by tc 1

2007-11-27 09:17:44 · 2 answers · asked by Anonymous

Make a T-chart of the following and graph it, and tell me three things about the graph that do not include function information.
f (x) = -2^x (the x is superscript above the 2

I know how to make a T-chart, just pick numbers for x and solve for y. and graph it, am I correct? what would be the 3 things that are not functional information?
thanks if you can answer.

2007-11-27 09:15:49 · 1 answers · asked by Boo Radley 4

ok... e is euler's number

(e^x + e^-x)/2 = 3

I'm not sure how to solve this... because if you added em wouldn't it be e^0 = 6... but 1 doesn't equal three... and then i can't find x

there's a hint in my book that says

[Multiply each side by e^x.]... which just confuses me more.

2007-11-27 09:15:25 · 10 answers · asked by DONELDA M 1

is a triangle with 2 congruent sides and one with a measure of 90 degrees an isosceles triangle? i mean im pretty sure it is but just want to be sure! thanks!

2007-11-27 09:08:18 · 7 answers · asked by Anonymous

Hmm i'm not sure if i'm happy on how i've typed this- square root signs can be a pain here i guess...
Thanks

2007-11-27 09:07:23 · 4 answers · asked by Pink Undies 1

{ (root (4n^2+3n+3)) - 2n }

2007-11-27 09:02:57 · 4 answers · asked by tc 1

2007-11-27 08:59:16 · 6 answers · asked by Anonymous

3 number between the following.

2.15 meters and 2.17 meters
0.8 meter and 0.9 meter


Help im confused to much stuff from the past

2007-11-27 08:56:22 · 3 answers · asked by Anonymous

Hello I want to know if I did the following question correctly :

A neon sign is made of glass tubing whose inside diameter is 0.025m and whose length is 5.5 m. If the sign contains neon at presure 0.00234 atm at 308 K, how many grams of neon are in the sign.

v = (pi)r^2 = 0.011m^3 = 1.1 x 10^-5 L

n = PV/RT = 0.00234 * 1.1 x 10^-5 / 0.08206 * 308 K

= 1.02 x 10^-9 mol

mass = moles * Mr =1.02 x 10^-9 mol * 20.18 = 2.06 x 10^-8 g

Then the another question asks :

If the pressure exerted by ozone, O3, in the stratosphere is 3.0 x 10^-3 atm and the temperature is 250 K, how many ozone molecules are in a liter?

Could somebody please show me how to do it as I know that I am doing it wrong as i obtain 4.8 x 10-5 molecules

THANK YOU!!

2007-11-27 08:56:22 · 2 answers · asked by Anonymous

could somebody help me to sketch the solid Q determined by the limits of integration
Int(z from 0 to 2) Int(x from 3 to 4) Int(y from -1 to 1) [xy^2+yz^3} dz dx dy.

2007-11-27 08:48:50 · 1 answers · asked by Anonymous

OK, I have to describe the transformation

f(x)=-(x-4)^2-3

MY ANSWER
1. Shift 4 units to the rt. on the hor. axis
2. Reflection through the x axis
3. vertical shift down 3 units

AM I RIGHT?

Now, Write the equation for the parabola that is

1. Shifted twenty units left
2. Vertically stretched by a factor of 6
3. Shift up 4 units

IS IT f(x)=6(x+20)+4

AM I RIGHT?

PART DUE!

What are the domain and range of the following quad. equations.

1. f(x)=-(x+7)^2+5

Is it

D=(-infinity, +infinity)...R=[5, +infinity)

IS THIS RIGHT?

and
g(x)=5x^2+25-4
5x^2+21

Well, I'm not sure how to approach this...I know completing the square is necessary but how do I do this one?

THANKS!

2007-11-27 08:41:28 · 3 answers · asked by Anonymous

ok well my teacher told us to go find out what a 20 sided shape is called and he willl buy that person a pop...so what is it called?

2007-11-27 08:40:07 · 7 answers · asked by Lisa 1

18, 7, -4, -15

2007-11-27 08:38:57 · 4 answers · asked by Still Doll << 4

this is the question .two angles in a triangle measure 40 degrees and 47 degrees.tell whether the third angle is acute,obtuse or right

2007-11-27 08:36:59 · 24 answers · asked by Anonymous

2007-11-27 08:34:39 · 1 answers · asked by Mark J 1

in an isosceles triangle, if two angles are the same and one measures 28 degrees what is the measure of the other two angles? thanks a bunch!

2007-11-27 08:32:22 · 11 answers · asked by Anonymous

18; 7; -7; -15

2007-11-27 08:31:05 · 1 answers · asked by Still Doll << 4

£72.50 increased by 23%
£118.20 decresed per year by 17% for 3 years

Easy, But Im Bored So ANSWER

2007-11-27 08:29:06 · 9 answers · asked by gdc3.rocks 3

could somebody help me to sketch the solid Q determined by the limits of integration
Int(z from 0 to 2) Int(x from 3 to 4) Int(y from -1 to 1) [xy^2+yz^3} dz dx dy.

2007-11-27 08:27:59 · 1 answers · asked by azulita 3