Mathematics - 18 September 2007

1/a +1/q = 1/g

solve for q
thanx all answers

2007-09-18 12:12:58 · 6 answers · asked by dreamz 4

precal problem

2007-09-18 12:09:22 · 2 answers · asked by dave h 1

how do i solve this

2007-09-18 12:09:07 · 11 answers · asked by Lyn'cey 1

Well, i'm in 7th grade and i'm in k-level math (for smart people). So that means I have to learn both 7th and 8th grade stuff. My teacher is really mean and she works really fast. We're learning intergers, decimals and fractions and i'm just not getting it. Any help please?

Ex:

-2.7 + 0.5 =

-1/2 + (-4/2) =

2007-09-18 12:07:27 · 4 answers · asked by Aimee 1

pleasee

2007-09-18 11:55:41 · 2 answers · asked by halle 2

find all solutions x1, x2, x3 of the equation vector b= (x1 times vector v1) + (x2 times vector 2) + (x3 times vector 3) where

vector b=
{-8}
{-1}
{2}
{15}

vector 1=
{1}
{4}
{7}
{5}

vector 2=
{2}
{5}
{8}
{3}

and vector 3=
{4}
{6}
{9}
{1}

I know these vectors can be simplied to the following equations, but i do not know how to solve 3 variables with 4 equations:

x1 + 2 x2 + 4 x3 = -8
4 x1 + 5 x2 + 6 x3 = -1
7 x1 + 8 x2 + 9 x3 = 2
5 x1 + 3 x2 + 3 x3 = 15

ANY HELP WOULD BE GREATLY APPRECIATED

2007-09-18 11:48:37 · 1 answers · asked by MARK 2

An object is thrown directly upward from the ground. After t seconds its distance in ft. above the ground is s = 144t-16t^2.

a) After how many seconds is the object 128 ft. above ground?
b) Afer how many seconds does the object strike the ground?

Please show work. 10 pts. for best answer.

2007-09-18 11:43:17 · 5 answers · asked by TypeA 5

The space shuttle orbits the Earth at a speed of 8.1 km/s. If it were possible to fly the space shuttle at this velocity to the nearest star to the sun, calculate how many years would be required for the trip (one way). The sun is 1.3 parasecs distant, where 1 parsec=3.26 light years (a light year is the distance light travels in one year), and the speed of light is 3.00x10^8m/s.



I'm quite confused on how to do this problem. Can someone help me please!!!! :) Thank You!

2007-09-18 11:25:57 · 4 answers · asked by Natlsn12009 1

like as is the rule for dividing 1001

2007-09-18 11:24:37 · 3 answers · asked by dorothy_diamond 1

Think of the number!

2007-09-18 11:20:18 · 18 answers · asked by smileyhippo2423 2

2007-09-18 11:17:18 · 7 answers · asked by vgl_13 1

Okay, I know that this is a really stupid question, but I'm 11 and taking Algebra 1 and I have to find a data chart by tomorrow of something. You can't imagine how hard this is on Google. I want something that I won't be embarrased to show in public. If you have anything, it is really appreciated. I need it by tomorrow, but you can comment anytime, I would love it. By the way, this is NOT A LIE. Promise.

2007-09-18 11:07:36 · 6 answers · asked by Anonymous

2007-09-18 11:02:08 · 8 answers · asked by starwars fanatic! 1

i have to graph it
need to find the domain
also the range.

The problem is i dont know where to start if someone could give me a step by step way to answer this problem i will be at ya 10 point mercy

2007-09-18 10:59:37 · 4 answers · asked by joemelle k 2

I mean, which is vertical and which is horizontal!!!!!!!

2007-09-18 10:54:21 · 13 answers · asked by musiclover724 3

Since the standard form of a quadratic equation is y=a[x-h]^2+k , why are the coordinates for the vertex, (h, -k)? Shouldn't they be (-h, k)?

2007-09-18 10:52:08 · 1 answers · asked by Talriada 2

I'm having trouble with the following questions.
1] x^4+2x^2+1
2] 8x^2+10x+3
3] 2x^2+7x-4
4] x^3+3x^2-x-3
5] (x-1)^7/2 - (x-1)^3/2

Thanks so much for helping, and I was wondering if there's a good website that could easily explain how to do these problems...

2007-09-18 10:46:08 · 3 answers · asked by Anonymous

2007-09-18 10:39:29 · 9 answers · asked by Anonymous

i worked the problem out, but i'm unsure if it is correct--
3x + y = 4
x + 2y = 3

does x= 2.2? and y= - 2.6??

tell me if i did anything wrong.

-thanks [:

2007-09-18 10:38:18 · 21 answers · asked by gratisfaction. 5

Here's the question, does anyone know the answer?

The parellelogram bounded by the lines y=ax+c , y=ax+d , y=bx+c , and y=bx+d has the area 18. The parellogram bounded by the lines y=ax+c , y=ax-d , y=bx+c , and y=bx-d has the area 72.

Given that a ,b ,c and d are positive integers, what is the smallest possible value of a+b+c+d?

If possible, could you explain how you got your answer so I could learn?
Thanks! :)

2007-09-18 10:30:15 · 2 answers · asked by Anonymous

Having a problem with this math problem

Y= 1 / x-3 ^2

2007-09-18 10:28:14 · 5 answers · asked by joemelle k 2

what set or sets of numbers does 1/3 and -√ 9.16 belong to?

2007-09-18 10:26:44 · 4 answers · asked by Anonymous

solve for x

2^x = 3 / 5

2007-09-18 10:21:48 · 4 answers · asked by Arianna A 1

Just need help on these last problem and I m done with my homework! I m having problem making an equation for them.

1) Jack, Kay, and Lynn deliver advertising flyers in a small town. If each person works alone, it takes jack 4 hours to deliver the flyers and it takes lynn 1 hour longer than it takes kay. Working together, they can deliver all the flyers in 40% of the time kay working alone. How long does it take Kay to deliver all the flyers alone?

2) Kiran drove from tortula to cactus a distance of 250 mi. She increased her speed by 10mi/h for the 360 mi trip to dry junction. If the total trip took 11 hours what was her speed from tortula to cactus?

2007-09-18 10:17:14 · 3 answers · asked by Pipos 1

#1. what is the volume in cm^3 o a regular cylinder measuring 5.78 cm tall and 9.2 mm in diameter?

#2.what is the mass of the object above(#1) if it is pure gold?

2007-09-18 10:14:38 · 2 answers · asked by Koala J 1

i was wondering if you could add 5y+5y cubed???? I need imediate answers!!!!!!!!!!!!

2007-09-18 10:13:07 · 9 answers · asked by Anonymous

what is the answer

2007-09-18 10:11:42 · 3 answers · asked by daddys_girl 2

Somebody gives you a penny one day. Then twice that the next day. Then twice that the next day. How much money do you have on the 25th day? How do I do this? I tried writed it down but I got to something like 25632 and that was only the fifteenth day!

2007-09-18 10:11:19 · 4 answers · asked by Ted (Guitar Legend) 3

please help me factor this

and please show steps so i can understand

2007-09-18 10:10:34 · 1 answers · asked by Anonymous

what is a good algebraic expression for the product of 5 and a number?

what is a good verbal expression for 2nwith a small 3 next to n plus 12?

15 divided by 3 x 5-4 squared

and lastly how do you evaluate :

2xy-z with a small 3
over z

thanks for anyone that can honestly give me the rights answers and 10 points to person who gives mostly correct answers. thanks!

2007-09-18 10:05:11 · 7 answers · asked by Anonymous