Mathematics - 4 September 2007

The question is to solve:

5x/6 - x - 1/ 5 < 1

2007-09-04 17:45:52 · 6 answers · asked by jigsawtaz 1

I am taking a 5th class power enginer coarse,and their is lots of algebra,I never took it in school.it all means nothing when I look at it. are their some books out there that I could get to help me or a web site.I just cant seem to find a tuter

2007-09-04 17:31:01 · 10 answers · asked by Anonymous

"Determine whether or not the given table could possibly be a table of values of a function".. what does this mean?!!!

2007-09-04 17:28:36 · 5 answers · asked by Anonymous

does anyone know the easiest way to learn how to use a TI-84 graphing cal.?? recomendations book..internet etc.

2007-09-04 17:19:04 · 2 answers · asked by Elizabeth B 1

Hi, I've been having troubles with problems like these. I understand the concepts but can't get the problem right. Please explain and write problem. Please and early thank yous:

3a(a(squared)-2a+1)

The a squared is an a with the little 2 exponent over it

Ty again

2007-09-04 17:16:59 · 5 answers · asked by nobody 3

Petrolyn oil is a combination of natural oil and synthetic oil--4 parts natural oil for every 7 parts of synthetic oil. How many liters of synthetic oil are contained in 627 liters of Petrolyn oil?

2007-09-04 17:15:17 · 2 answers · asked by baby166_99 2

Problem: x=[(√y)(y-3)]/3

I am finding the definite integral from 1 to 4.

I believe I need to integrate with respect to y using the equation:

s=∫√{1+[g'(y)]²}

I started by taking the derivative of the original equation x=[(√y)(y-3)]/3 to find g'(y).

I came up with [(√y)/3] + [(y-3)/(2√y)]

Then I squared that quantity to equal...

[(√y)/3] + [(y-3)/3]+[(y-3)(y-3)]/4y

and after much algebra to simplify and combine...

[25y² - 60y + 81]/36y

I am stuck here, and am not even sure if my algebra is correct... any help please?

Please show all steps... Thanks in advance.

2007-09-04 17:01:19 · 4 answers · asked by Peter M 2

There is a sales tax of $5 on an item that costs $52 before tax. At the same tax rate, what is the sales tax on an item costing $130 before tax?

2007-09-04 17:00:28 · 13 answers · asked by baby166_99 2

abs= absolute value.

2007-09-04 16:41:18 · 3 answers · asked by north h 3

problem:
An elevator started on the 9th floor,It went up 6 floors,then down 4 floors,down 7 ,and up 5 floors.On what floor did the elevator finally stop at? please explain how u got ur anser so i know how nx time.thnx in advance!!! luv ya'll!!

2007-09-04 16:38:38 · 4 answers · asked by i_lyk_math 1

(x+1)^2(x-2) + (x+1)(x-2)^2 = 0

2007-09-04 16:38:37 · 2 answers · asked by GHAAD 4

given that h(x): x^2-4/x+2 @ x<-2
and : -4 @ x=-2
and : -2+x @ -2 Determine which of the following statements is true with regard to the continuity of h(x) at the point x = -2.
h(x) is continuous
h(x) has jump discontinuity
h(x) has a removable discontinuity
h(x) has infinite discontinuity
None of the above(this is what i believe the answer to be)

2007-09-04 16:35:01 · 2 answers · asked by enslaven 1

I'm usually a pro at these. But there is a detail at the end and I'm not sure how to write the equation around it. I already figured out the answer but I want a "prettier" equation.

Truck leaves town A at 2 p.m. heading for town B, traveling at 40 mi/h. At 3:15 car leaves town B heading to town A traveling at 55 mi/h. (Easy) But then it says - the truck and car pass when the car is 2 hours from town A. How far apart are the towns?

40t = 55(t - 1.25) gets me nowhere.

I know 2 hours represents 110 miles left in the car's journey. The answer is 192.5 miles because I just gridded the problem out. Any takers?

2007-09-04 16:28:50 · 5 answers · asked by Anonymous

What did you think of your geometry class?
Thanks.

2007-09-04 16:27:40 · 3 answers · asked by MaggieSin 3

any tips would be great.


1. antideriv of x(4thrt(1-x^2))dx
i got -2/5(1-x^2)^((5/4))+c but the book says it should be ^(5/2)

2. antideriv of (sin(x/3))^5(cos(x/3))dx
i got -1/6(sinx/3)^6+c but that book says its 1/2 in the front

3. antideriv of sec(x+pi/2)tan(x+pi/2)dx
i got cos(x+pi/2)+c but the book says its secant

4. antideriv of (sin(2x+1))/(cos(2x+1))^2dx
i got cos(2x+1)^-1 but the book says there is a 1/2 in front

5. antideriv of (sqrt(cotx))(cscx)^2dx
couldnt get much anywhere in this one

6. antideriv of (1/x^2)sin(1/x)cos(1/x)dx
i think this one is all wrong cuz i got -sin(1/x)+c and the book has it sqrd and times 1/2

7. antideriv of (x^3)(sqrt(x^2+1))
i dont know where to start because what i thought would be u is not able to be because of the x^3... its one x too big!!

2007-09-04 16:26:21 · 1 answers · asked by sportyarteest 2

The curve traced out by a point at a distance 1 m from the center of a circle of radius 2 m as the circle rolls along the x-axis is called a trochoid and has parametric equations:
x=2θ-sinθ y=2-cosθ
One arch of the trochoid is given by the parameter interval 0≤θ≤2π. Find the area under one arch of the trochoid.

2007-09-04 16:08:10 · 3 answers · asked by dawance88 2

i forgot what it was like the rule for adding signed numbers is subtract small number from big number and keep the big numbers sign, well what about subtracting sigend numbers?

example: (-5) - 3 = ?

2007-09-04 15:56:10 · 6 answers · asked by questioner♥ 3

2007-09-04 15:51:03 · 2 answers · asked by Deesa 2

2007-09-04 15:45:27 · 9 answers · asked by turlington999 1

the explaination could be used to explain to another college student possibly even one who is not in your class.

2007-09-04 15:43:33 · 4 answers · asked by Anonymous

2007-09-04 15:41:35 · 7 answers · asked by turlington999 1

2007-09-04 15:32:12 · 7 answers · asked by Anonymous

I need this in expanded form.. Thank you

2007-09-04 15:30:57 · 24 answers · asked by Lords of Stockton 3

f(x) gives the cost (in thousands of dollars) of buying x acres of land in a remote area of Vermont. Carefully interpret the following:

a) f(50) (your answer should take the form "f(50) is...")
b) f^-1 (50) (your answer should take the form "f^-1 (50) is....")

2007-09-04 15:30:43 · 10 answers · asked by stjdarylthomas 2

Sums and differences of cubes??

Factor Completly:

1) 3z^5 - 3z^2

2) a^9 + b^12 c^15

2007-09-04 15:29:05 · 1 answers · asked by Anonymous

2007-09-04 15:27:51 · 3 answers · asked by Anonymous

f(θ)=sin(θ-5)/cosθcos5

2007-09-04 15:22:18 · 1 answers · asked by ilovecoach 3

thanks.

2007-09-04 15:08:46 · 3 answers · asked by Deesa 2

simplify: (2x^3/4 + y^-1/2)(2x^3/4 - y^-1/2)

2007-09-04 15:03:10 · 2 answers · asked by mandy 1

2007-09-04 15:00:51 · 2 answers · asked by alawrence108 1