Mathematics - 29 October 2007

If a ball is thrown vertically upward from a height of 5 ft, with an initial velocity of 80ft/s, its height h after t s is given by . How long does it take the ball to return to the ground?

2007-10-29 15:03:39 · 12 answers · asked by Amanda K 1

2007-10-29 14:59:14 · 8 answers · asked by Tonya E 1

i cant solve this!
2x-y-z=7
3x+5y+z=-10
4x-3y+2z=4
if u can explain or just me an answer!! thank u!

2007-10-29 14:49:41 · 2 answers · asked by crazyyyCHICK 2

An open box is to be constructed from a rectangular piece of cardboard which measures 18 inches by 20 inches. To make the box a square shaped cut is made at each corner of the rectangle and the sides folded up. Each square cut must be a whole number of inches on each side. Determine what size cut will result in the box with the greatest volume.

2007-10-29 14:49:11 · 1 answers · asked by Anonymous

At an unknown distance from its base the top of a tower subtends an angle B which measures 45.799 degrees. From a distance along a line through the tower base and the first observation point and 893 feet further away the top of the tower subtends an angle A which measures 31.700 degrees. To within five feet the tower is ____ feet high

2007-10-29 14:45:59 · 4 answers · asked by Anonymous

10x^2 - 30 x + 20 / x^2 - 1=

i'v tried it a million times but keep getting the wrong answers.

2007-10-29 14:44:12 · 8 answers · asked by salo 2

How do you do this type of problem?

Five singers are to perform at a talent show. One insists on being the last performer. If that is so, how many different ways are you able to schedule the appearances?

What is this? A permutation or combination? How do you solve it?

2007-10-29 14:41:12 · 2 answers · asked by yellowducks 1

I did the quotient rule for both and obviously it didnt work... >.< please help

2007-10-29 14:36:57 · 1 answers · asked by Anonymous

solve for x:
(4x+6)/(5x+1)

solve for x:
(x-5)/(x+4)=(x-1)/(x+2)

2007-10-29 14:36:46 · 1 answers · asked by jason g 1

A nonregular hexagon has five exterior angle measures of 55, 60, 69, 57, and 57. What is the measure of the interior angle adjacent to the sixth exterior angle?

2007-10-29 14:34:59 · 5 answers · asked by Anonymous

How do you do this type of problem?

Five singers are to perfrom at a tanelt show. One insists on being the last performer. If that is so, how many different ways are you able to schedule the appearances?

What is this? How do you solve it?

2007-10-29 14:34:10 · 1 answers · asked by yellowducks 1

Let f be a twice-differentiable function such that f(2)=5 and F(5)=2. Let g be the function given by g(x)= f(f(x)).

Explain why there must be a value c for 2 f'(c)= -1

2007-10-29 14:33:08 · 1 answers · asked by sirsoccerhead 2

2007-10-29 14:18:19 · 16 answers · asked by Brandon 1

2007-10-29 14:16:58 · 2 answers · asked by Julian L 2

Yeah - well, is there any difference between the brackets and the line when you're doing matrices? For example,

Is there any difference between:

[1 2 3]
[4 5 6]

and

|1 2 3|
|4 5 6|

That's all I need.

Thanks in advance!

2007-10-29 14:16:19 · 2 answers · asked by Anonymous

How would you go about doing this??

Thanks for any replies

2007-10-29 14:15:55 · 1 answers · asked by Dan 1

2007-10-29 14:15:20 · 2 answers · asked by Anonymous

Please explain how you got the answer.

2007-10-29 14:13:01 · 2 answers · asked by wendy f 3

how do u figure out the equation of the line tangent...do we have to use the chain rule?

1. x= sec^(2)t -1, y= tan t, t= -pi/4

2007-10-29 14:12:05 · 2 answers · asked by Anonymous

2007-10-29 14:10:12 · 3 answers · asked by Madison W 1

i know it ends up being something like
(x-2 ) (x +3 )
but the negatives are throwing me off and i dont know which factor goes in and if is positive or negative

2007-10-29 14:07:45 · 6 answers · asked by . 7

that last question: directions: determine an equation describing the motion of tides, assuming high tide at t=0.
5) reffering to q.4) how far does the tide in the bay drop 1 hour after high tide?
6)The brightness of the star Delta Caphei varies sinusoidally between values of 4.35 and 3.65. The time between maximum brightness readings is 5.4 days. Determine an equation describing the star's brightness as a function of time, assuming that its brightness at day 0 is 4 and decreasing.

2007-10-29 14:07:39 · 1 answers · asked by dOOmsickle 1

2007-10-29 14:04:32 · 1 answers · asked by Anonymous

a open box is to be constructed from a rectangular piece of cardboard which measures 18 inches by 20 inches to make the box a square shaped cut is made at each corner of the rectangle and the sides folded up. Each square cut must be a whole number of inches on each side determine what size cut will result in the box with the greatest volume? explain answer please so i understand!

2007-10-29 14:02:53 · 1 answers · asked by Anonymous

Write the word or phrase that best completes each statement or answers the question.

oh and ^ means the number after it is an exponet K

729s^3+1

2007-10-29 14:02:16 · 2 answers · asked by Anonymous

Here it goes: 16x^2-16x+4=0. My first step I did was factor the 4 out of that which is as follows: 4(x^2-4x+1). Is this some sort of linear equation? Cause if it is, how do I solve it? And if it is a linear equation, how do I solve it with an exponent of 2 in it?

Thank you everyone and please explain. I always need a good explaination

2007-10-29 13:58:06 · 6 answers · asked by Luvon 3

2007-10-29 13:55:15 · 1 answers · asked by Anonymous

Use shifts and/or reflections to graph each function. Determine the domain, range, and vertical asymptote of each function.

1. f(x) = In (x + 4)

2. f(x) = 2 + In x

3. f(x) = log(x - 4)

Can you help me find the points of these problems so I can write the graph! I just don't know how you find the points in these problems to write graph from!

2007-10-29 13:47:20 · 1 answers · asked by w s 3

2007-10-29 13:44:47 · 4 answers · asked by Anonymous

2007-10-29 13:42:07 · 2 answers · asked by Anonymous