Mathematics - 29 July 2007

Solve the compound inequality:
2x - 3 > 5 AND 5x + 2 < 32.
Draw the number line.

2007-07-29 12:53:05 · 4 answers · asked by Patricia F 1

2007-07-29 12:45:31 · 2 answers · asked by BJ G 1

If x is a positive integer less than 50, for how many values of x is
x^2 / √ x

an integer?

2007-07-29 12:27:02 · 2 answers · asked by Anonymous

Two straight roads intersect at right angles. Car A, moving along one of the roads, approaches
the intersection at 25km/h and car B, moving on the other road, approaches the intersection
at 30km/h. At what rate is the distance between the two cars changing when A is 0.5km from
the intersection and B is 1.2 km from the intersection?

I have formed two equations:
x= 0.5 +25t and y= 1.2 + 30t
- im stuck here and I dont know how to continue.

Thanks in advance!

2007-07-29 12:20:59 · 3 answers · asked by Anonymous

Im am trying to find the limit of the function (cos x - 1) / sin x^2 as the limit approaches 0.

If you plug in 0 you get 0/0 meaning l'hospitals rule applies.

So I take the derivative of the top and bottom seperatly

I get -sin x / 2x cos x^2, which still gives me a 0 for an answer,

even if I take more derivatives I will keep getting the same answer...However I guessed in my head the answer would be -1/2, but I cant show it

Any ideas?

2007-07-29 12:18:59 · 3 answers · asked by bid 1

How do I find the mean value of the function 2X^2 - 5X +3 on the interval [1,2]?

And how do i find the area bounded by f(x)= -x^2 +4x -21 and g(x)= sqrt2x? 3.5 > x > 0 (3.5 is greater than or equal to x which is greater than or equal to zero)

2007-07-29 12:06:15 · 3 answers · asked by LaLa 1

rdc=radical sign exp=exponent a. (10rdc3)exp2 b. 3rdc17 x 3rdc17 c. rdc 20exp2 x 20exp2

2007-07-29 12:01:24 · 2 answers · asked by Anonymous

hi

2007-07-29 11:54:34 · 5 answers · asked by nurges g 1

- 6 = - 6 (an assumption)

can be written as

4 -10 = 9 -15

4 -10 + 25/4 = 9 -15 + 25/4 (adding 25/4 on both sides)

(2 - 5/2)^2 = (3 - 5/2)^2 (by opening it we get the same according to (a - b)^2=a^2 + b^2 - 2ab)

2 - 5/2 = 3 - 5/2 (taking 1/2 power on both sides)

2 = 3

how is tht possible ......... isnt date amazing or i m wrong some where ?

2007-07-29 11:52:04 · 4 answers · asked by its me 2

2007-07-29 11:44:36 · 11 answers · asked by shoppinggirls3 1

Find the volume of a square prism whose base edges are 14 inches and has a height of 8 inches.

2007-07-29 11:39:14 · 4 answers · asked by Tom R 1

slove the system by graphing. What are ny graphing points?

2007-07-29 11:25:49 · 6 answers · asked by LASHANDA F 1

the average speed of one airplain is 200 mph faster than that of an automobile.If the autombile starts at 3am and the airplane starts form the same place at 11am,they will have traveled the same number of miles by 1pm .

if r represents the rate of the automobile,how many miles does
the plane travel?

a.200r
b.2(200+r)
c.10r

2007-07-29 11:17:03 · 2 answers · asked by hola_kity2008 1

I thought the answer was -3(negative 3); but I understand it's -2Y2(square). Can anyone explain why.

2007-07-29 11:04:35 · 5 answers · asked by ADM 3

2007-07-29 11:03:26 · 7 answers · asked by Dave 4

[6.05] A trapezoid has an area of 493 meters squared, a height of 17m, and a base of 22m. Find the length of the other base. Show all work for credit.

Thanks for any and all help guys, I really need some help with this question, I don't understand. Thanks.. and sorry...

2007-07-29 11:00:14 · 1 answers · asked by Tom R 1

1. Dick spent $7 in order to buy baseballs and tennis balls. If baseballs are 70 cents each and tennis balls are 60 cents each, what is the greatest possible number of tennis balls that Dick could've brought? I just guessed and checked for this and got 7 but would like to know a algebraic way.

2. If the average of 4 #'s is 8000 and the average of 3 of the 4 numbers is 7500, then what must the 4th number be?

Thanks. If you could show the steps that'll be great.

2007-07-29 10:59:01 · 1 answers · asked by Anonymous

Plus stupid question will be asked and that same person gets another 10 points..

This is all for me going out to the movies tonight.. So thanks a lot guys!

The height of a square pyramid is 24 cm. Find the slant height if the base edges are 14 cm.

The lateral area of a square pyramid is 62 square inches and the base area is 18 square inches. Find the surface area.

Find the base edge of a square prism with a height of 5m and a lateral area of 100 meters squared.

Find the lateral area of a triangular prism with base edges of 5cm, 12cm, and 13 cm. The height of the prism is 14cm.

Name the figure below.
http://learn.flvs.net/webdav/assessment_images/educator_geometry/Pictures/v6/mod6/06_17_58.gif

What is the area of a regular hexagon with side length of 40cm?

Find the height of a triangle with area of 42 square centimeters and a base of 7cm.

Find the area of a kite with diagonals of 28ft and 13ft.

2007-07-29 10:27:31 · 3 answers · asked by Triock91 1

"The problem says to sketch the curve represented by te parametric equations and write the corresponding rectangular equation by eliminating the parameter." This is the problem:

x=3t-1, y=2t+1

This is how the problem is solved in the solutions manaual.:

Step 1: y=2((x+1)/3)+1
Step 2: 2x-3y+5=0

No how does step one develop into step 2??? In lost on this!

2007-07-29 10:25:05 · 4 answers · asked by Kayla G 1

There is a spinner with the numbers 0 to 8 on it. There is another spinner with the numbers 0 to 6 on it. Both spinners are spun. What is the probability that the sum of the spins will be greater than 10?
The situation is continuous, not discrete. Please explain how you did it. Thanks.

2007-07-29 09:46:36 · 2 answers · asked by thyplo101 2

How many digits will there be after the . and is it repetitive?

thanks!

2007-07-29 09:36:20 · 10 answers · asked by 5674646 2

2007-07-29 09:12:06 · 7 answers · asked by arslan s 1

looking to buy a peice of land and would like to know how big it is

2007-07-29 09:11:52 · 3 answers · asked by ernesto r 1

Assume that the light rays are parallel and the plane of the shadow is perpendicular to the light rays.

2007-07-29 09:04:01 · 5 answers · asked by Scythian1950 7

Simplify the expression. Leave the answer with positive exponents.

2007-07-29 08:53:13 · 4 answers · asked by Jocelin 3

What is the Y intercept of this line?

2007-07-29 08:32:09 · 9 answers · asked by bridetobebrandie 4

and 4sqrt2 ?

2007-07-29 08:27:11 · 8 answers · asked by Anonymous

2007-07-29 08:13:45 · 12 answers · asked by atsp 3

What is the answer to this equation?

2007-07-29 08:08:21 · 10 answers · asked by bridetobebrandie 4

2007-07-29 07:58:45 · 7 answers · asked by Anonymous