Mathematics - 28 August 2007

9
∫1/2x dx =
1

i know the answer is ln3, but i just can't seem to work it out that way, could someone explain it to me?

2007-08-28 13:17:20 · 2 answers · asked by Fibonacci01123 3

The square root of 10.
2 times the square root of 6.
24
2 times the square root of 15.

2007-08-28 13:16:37 · 1 answers · asked by Kevin P 1

Line RS biescts segment PQ at point R. Find RQ if PQ = 14 centimeters

2007-08-28 13:10:20 · 5 answers · asked by Rachel W 2

lim 1-cos(3x) / 7x

as x->0

I know I need to use the conjugate but I'm not really sure how or what to do from there. Thanks!

2007-08-28 13:08:29 · 2 answers · asked by AppleCard! 2

Over the weekend the Cheney's drove 450 miles. They drove three thimes as many miles on Sunday as they did Saturday. a. 3x=450 b. x+ x/3 =450 c. 3x -x =450 d. x + 3x=450

2007-08-28 13:02:50 · 10 answers · asked by Marie R 1

a half gram in a nickel
1 gram in a dime
around 22-26 grams in an ounce
4 ounces in a quarter pound
8 ounces in a half pound
16 ounces in a pound

2007-08-28 13:02:23 · 6 answers · asked by Anonymous

Insert grouping signals in the expression so that the expression is 14.

9 + 39 + 22 ÷ 11 - 9 + 3

thanks in advance!!

2007-08-28 12:59:09 · 11 answers · asked by Anonymous

i dont know how to do this problem. its very very hard. = )

#2. a farmer owns a triangular field ABC. The side [AC] is 104m, the side [AB] is 65m and the angle between these two sides is 60 degrees.

a) calculate the length of the third side of the field

b) find the area of the field in the form p *squareroot*(3), where p is an integer

(same prob) Let D be a point on [BC] such that [AD] bisects the 60 degree angle. The farmer divides the field into two parts by constructing a straight fence [AD] of length x meters.

c) (I) show that the area of the smaller part is given by (65x) / 4 and find an expression for the area of the larger part
(II) hence, find the value of x in the form q *squareroot* (3), where q is an integer

d) prove that BD / DC = 5 / 8

PS. if its too long to answer here, you can email me at real_name_x@yahoo.com

thank again.

2007-08-28 12:58:25 · 1 answers · asked by john doe 2

I have a math problem that has to do about parachutists and longitude. It says that the change in altitude is -25 ft/s. what does the 's ' stand for? Thanks guys!

2007-08-28 12:56:44 · 5 answers · asked by the.m.kid 2

Write the equation of the line with x-intercept (–8, 0) and undefined slope.

2007-08-28 12:51:09 · 6 answers · asked by Anonymous

Question: Explain how rescue teams could use two of the postulates to locate a distress signal.

Here are the postulates:
Through any two points, there is exactly one line.
Through any three noncollinear points, there is exactly one plane containing them.
If two points lie in a plane, then the line containing those points lie in the plane.
If two lines intersect, then they intersect in exactly one point.
If two planes intersect, then they intersect in exactly one line.

Question 2:
What is the formula for the maximum number of segments determined by n points.

2007-08-28 12:50:15 · 1 answers · asked by Anonymous 2

What is the simplified form of the MIdpoint Formula if one of the endpoints of a segment is (0,0), and the other is (x,y)?

2007-08-28 12:49:41 · 3 answers · asked by jkvbmc 2

Rewrite the equation y = –3x + 5 as a function of x.

2007-08-28 12:48:35 · 5 answers · asked by Anonymous

2007-08-28 12:48:11 · 5 answers · asked by shogun644 1

2007-08-28 12:45:10 · 12 answers · asked by emilyjih 2

Find the average of the set of numbers.Round the average to the nearest tenth.

here is the numbers (16,9,3,25,3)

2007-08-28 12:43:52 · 11 answers · asked by Hoe 1

5. The director of a summer day camp estimates that 100 children will join if the camp fee is $250, but for each $20 decrease in the fee, ten more children will enroll.

A. Determine the linear equation that will represent the number of children who will enroll at a given fee. Hint: To write the slope, you need two points on the line. Show all work to receive full credit.






B. Graph the linear equation that represents the number of children who will enroll at a given fee.




C. Approximately how many students will enroll if the camp fee is $180? Round to the nearest child.




D. Approximately how many students will enroll if the camp is free? Round to the nearest child.

2007-08-28 12:40:15 · 1 answers · asked by janval m 1

2007-08-28 12:39:37 · 14 answers · asked by ... 2

Beginning of Calculus:

f(x) = x^3 - 225x

Instructions: Determine an appropiate viewing rectangle on a Calculator. In other words I'm looking for domain and range. My problem is, I've been away from Math for a bit, thus I'm rusty on some of the skills. When it comes to looking for the domain and range (x/y min and max), would I want to use the intercepts to do so? How else would one go about stating the appropiate domain and range, or "viewing rectangle" for this guy. Thanks a lot.

Camaren

2007-08-28 12:35:19 · 2 answers · asked by Camaren 1

I'm sure i am double checking myself probably because i am tired but how do you do this problem

this is a multiplication problem 56
34

2007-08-28 12:27:45 · 2 answers · asked by coolmesillyme 1

I am studying for trig because I am taking it my sophomore year.(next week classes start) But I only know some of it.
Okay, so I know that whole Soh-Cah-Toa rule.
But how do I find the sin,tan, and cos? It says to input the angle like sin(angle) but when I do, the answer doesn't come out correctly. Then is says that sin= o/h, but what if the angle doesn't have lengths?
For ex. these worksheet problems:

2007-08-28 12:23:42 · 2 answers · asked by ihatestuff 1

I am taking an advanced math class this year and its the second day of school and I already have homework up the wall.
Any help will be greatful

Anyway here it is:
Directions: The symbol [x] means the greatest integer not greater than x. If f(x) = [x] + 4, find each value.

1) f(-4)
2)f(-6.3)
3)f(-√3)
4) f(-4 + t)

The next question is:
Directions: Name all values of x that are not in the domain of the given function.

5) f(x) = √x^2 - 9

Thank you for your help and if you could explain it that would be great.

Thanks again!

2007-08-28 12:19:17 · 1 answers · asked by balgne 3

2007-08-28 12:09:23 · 9 answers · asked by kassie 1

AH its so hard! help mee pleasee!!

2007-08-28 11:58:14 · 4 answers · asked by coolbeans 1

Please Show How You Did It

2007-08-28 11:57:28 · 1 answers · asked by Anonymous

How would you do this problem?:

3/4 - 1/6 + 1/8=?

2007-08-28 11:55:13 · 19 answers · asked by Anonymous

write as one logarithm
log(base2)X +3log(base2)y-1/2log(base2)X

ok so iknow i somehow have to get hte number infrot of the logs out of there but where does it go does it become an exponent? please help me

2007-08-28 11:54:06 · 2 answers · asked by bwaystar123 2

Last year I never understood how to divide with decimals. My question is 244 divided by 0.2. How do I do this problem?

2007-08-28 11:42:56 · 7 answers · asked by Anonymous

I just don't understand what to do with those damn perpendicular vectors... if only they were parallel..

2007-08-28 11:33:16 · 1 answers · asked by math q 2

I can't remember how to solve this (review for geometry) Please help me out. Here are the instructions and the problem I need help with!

Simplify each expression- DO NOT give me any decimals- answers must be in FRACTION form. At least minimal work is required.

2/3(3x-5) - 3/4(5x-3)

2007-08-28 11:30:26 · 2 answers · asked by Anonymous