Friday

April 18, 2014

April 18, 2014

Number of results: 9,420

**Pre-Calculas**

2 seconds
*Saturday, September 10, 2011 at 3:59pm by =P*

**pre -calculas**

No answer.
*Wednesday, April 25, 2012 at 2:59pm by Anonymous*

**pre -calculas**

correct
*Wednesday, April 25, 2012 at 2:59pm by bobpursley*

**pre-calculas**

Can someone please help me?
*Tuesday, September 18, 2012 at 10:29pm by ladybug*

**pre-calculas**

msybe, you have to ask a question
*Tuesday, September 18, 2012 at 10:29pm by bobpursley*

**pre-calculas**

f(x-h) is f(x) shifted right h units. So, you want y = (x+6)^2
*Tuesday, September 18, 2012 at 10:50pm by Steve*

**Pre Calculas**

1 + 1/(csc^2 - 1) 1 + 1/cot^2 1 + tan^2 sec^2
*Wednesday, November 2, 2011 at 7:26pm by Steve*

**pre-calculas**

correction of problem. Should be: -2x squared + 6x + 5 = 0 Sorry about that! Thanks for your help!
*Sunday, February 16, 2014 at 10:34am by Marina*

**Pre-Calculas 11**

There is no diagram given its just what the question says. There is no other info
*Tuesday, October 1, 2013 at 12:42am by ravneet gill*

**Pre-Calculas 11**

There is no diagram given its just what the question says. There is no other info
*Tuesday, October 1, 2013 at 12:42am by ravneet gill*

**pre-calculas**

find the LCD and solve: x+3 12x + 4 1 - 2x ____ + _________ = _______ 3-x x squared - 9 x + 3
*Sunday, February 16, 2014 at 9:50am by Marina*

**pre-calculas**

Use "completing the square" to find the zeros of the polynomial. =2x squared + 6x + 5 = 0
*Sunday, February 16, 2014 at 10:34am by Marina*

**pre-calculas**

do a long algebraic or a synthetic division to show that (x^2 - 2x + 15)/(x+7) = x-9 + 78/(x+7) the slant asymptote is y = x-9
*Sunday, March 10, 2013 at 4:54pm by Reiny*

**Pre Calculas**

verify the following 1+1/csc^2x-1=sec^2x
*Wednesday, November 2, 2011 at 7:26pm by Raven*

**pre-calculas**

what is the function whose graph is the graph of y=+4, but is reflected about the the x-axis. y=
*Wednesday, September 19, 2012 at 12:16am by ladybug*

**pre-calculas**

multiply top and bottom by (x-5)(x+5) which is (x^2-25) x^2 - 9 x - 10 = (x-10)(x+1) by the way
*Sunday, February 16, 2014 at 9:34am by Damon*

**Pre Calculas**

how would you varify the following sinx+sinx cot^2x=cscx
*Wednesday, November 2, 2011 at 7:25pm by Raven*

**pre-calculas**

write a function whose graph is the graph of y=x^2, but is shifted to the left 6 units.
*Tuesday, September 18, 2012 at 10:50pm by ladybug*

**pre-calculas**

simplify the following complex fraction: x ____ -2 x-5 _____________________________________ x squared - 9x - 10 ____________________ x squared - 25
*Sunday, February 16, 2014 at 9:34am by Marina*

**Pre-Calculas**

I a lighthouse is 75 feet tall and boat is out at sea 40 min away, how far is the boaat from the lighthouse. I'm stump on this problem..Help!
*Thursday, September 1, 2011 at 11:08pm by Carlos*

**pre-calculas**

Why don't you read your textbook and figure it out? There are examples. but anyways: y=x^2 is a parabola, so after you draw a standard parabola, just count 6 units left for each points.
*Tuesday, September 18, 2012 at 10:50pm by Luo*

**pre-calculas**

rationalize the denominator: 5 + the sq. rt. of 3 ________________________ 4 + the sq. rt. of 3
*Sunday, February 16, 2014 at 12:40am by Marina*

**pre-calculas**

X: 80*(-3i-4j)/5 = -48i - 64j Y: 91*(5i-12j)/13 = 35i - 84j Z: 51*(15i+8j)/17 = 45i + 24j sum: 32i -124j = 128N at -75.5
*Thursday, May 10, 2012 at 11:23pm by Steve*

**pre-calculas**

to shift f(x) down 8, f(x)-8 to reflect in x-axis, -(f(x)-8) = 8 - f(x) to reflect in y-axis, 8 - f(-x)
*Tuesday, September 18, 2012 at 11:51pm by Steve*

**pre-calculas**

z. f(x)=3x-9 b. rate of change is 3 explaination: find the two points (at x=7, and x=8). then find the slope (f(8)-f(7)/(1)) then the equation is of the form y=slope*x+b. Put either point in, and solve fodr b.
*Tuesday, September 18, 2012 at 10:33pm by bobpursley*

**pre-calculas**

Find the function that is finally graphed after following transformations are applied to the graph of y=x in the order list 1. shift down 8 units 2. reflect the x-axis 3. reflect the y-axis
*Tuesday, September 18, 2012 at 11:51pm by ladybug*

**pre-calculas**

Find the slant asymptote, if any, of the rational function. Do not graph the function. (Enter your answers as a comma-separated list of equations. If an answer does not exist, enter DNE.) f(x) = x2 − 2x + 15 _____________ x + 7
*Sunday, March 10, 2013 at 4:54pm by melanie*

**Pre-calculas Math**

9pi/12 should be converted into degrees. The value of pi is 180 so all you do is 180 times 9 divided by 12 and then take the cosine of that value.
*Sunday, November 4, 2012 at 8:08pm by Sanya *

**Pre-Calculas**

The voltage E of an alternating current electrical circuit can be represented by the sinusoidal function E = 220 cos( t), where E is the measured in volts and t is measured in seconds. How long does it take the alternating current to complete one full cycle?
*Saturday, September 10, 2011 at 3:59pm by Anonymous*

**pre-calculas**

(5+√3)/(4+√3) * (4-√3)/(4-√3) (5+√3)(4-√3)/(16-3) (17-√3)/13
*Sunday, February 16, 2014 at 12:40am by Steve*

**Pre-Calculas**

By simple trigonometry on a plane: θ=48 minutes (angle of depression) h=75' distance = 75/tan(48') =75/0.01396 =5371.1 feet away =1.02 mile approx. If you are looking for correction for the curvature of the earth, a more complex calculation will be required.
*Thursday, September 1, 2011 at 11:08pm by MathMate*

**pre-calculas**

well, this one is different anyway -2 x^2 + 6 x + 5 = y find zeros x^2 - 3 y - 2.5 - -y/2 x^2 - 3 y = -y/2 + 5/2 x^2 -3 y + 9/4 = -2 y/4 + 10 y/4 + 9/4 (x- 3/2)^2 = -1/2 (y -19/2) when y = 0 (x-3/2)^2 = 19/4 so x = 3/2 +/- 1/2 sqrt 19 check with quad eqn x = [ -6 +/- sqrt (36...
*Sunday, February 16, 2014 at 10:34am by Damon*

**Pre-calculas Math**

cosx cosy + sinx siny = cos(x-y) so, what we have here is cos(9π/12 - 5π/12) = cos(4π/12) = cos π/3 = 1/2
*Sunday, November 4, 2012 at 8:08pm by Steve*

**Pre-Calculas 11**

a farmer wants to build two pens (one for cows, the other for horses) on land by a straight road. There is already a fence along the road and the farmer has 800m of fencing to build his fence to enclose the pens and seperate them as shown in the diagram below. what is the ...
*Tuesday, October 1, 2013 at 12:42am by Ravneet Gill*

**pre-calculas**

-(x+3)/(x-3)+(12x+4)/(x-3)(x+3) -2x/(x+3) LCD = (x+3)(x-3) which is (x^2-9) so -(x+3)(x+3)/LCD +(12x+4)/LCD- 2x(x-3)/LCD -x^2 - 6x - 9 + 12x + 4 -2x^2 + 6 x all over LCD (-3 x^2 + 12 x -5)/(x^2-9) check my arithmetic
*Sunday, February 16, 2014 at 9:50am by Damon*

**Pre Calculas**

A GARDENER HAS 60' of edging. She wants to use it to enclose a 120 square foot rectangular area. She does not have to use up all of the edging. what are the possible lengths that a side of the rectangle can have? Answer using interval notation. Hint: if the length of the ...
*Thursday, May 23, 2013 at 12:40am by Laura*

**Pre-calculas Math**

how to find the exact value of: cos(9*pi/12)*cos(5*pi/12)+sin(9*pi/12)*sin(5*pi/12)
*Sunday, November 4, 2012 at 8:08pm by Jon*

**pre-calculas**

can someone please help me with this question? Given the function f(x)=3x-9 Find the rate of the change between the stated values for x: 7 to 8 A. Find the equation of a secant line containg the given point (7,f,(7)) and (8,f,8)) B. Find the rate of change between the stated ...
*Tuesday, September 18, 2012 at 10:33pm by ladybug*

**Pre-Calculas 11**

I cannot see the diagram, so I am going to assume the new fencing is formed into an 'E' shape, with the opening pressed up against the existing fence line. That is: one long side (l), two short sides and the divider (3w). The fence length is: 800 = 3w + l So the area is : A = ...
*Tuesday, October 1, 2013 at 12:42am by Graham*

**calculas**

Hydrocodone bitartrate is used as a cough suppressant. After the drug is fully absorbed, the quantity of drug in the body decreases at a rate proportional to the amount left in the body, with constant of proportionality . Suppose that the half-life of hydrocodone bitartrate ...
*Sunday, March 6, 2011 at 12:43am by calculas*

**calculas**

thank you so muchh :)
*Tuesday, December 7, 2010 at 9:51pm by Anonymous*

**Calculas**

is it x^3 -(2x+5)/(x+4) ?
*Saturday, March 16, 2013 at 8:35am by black_widow*

**Calculas**

I am still lost :(
*Wednesday, February 15, 2012 at 3:33pm by Anonymous*

**Calculas**

Is your question is f(x)= x^3-2x+(5/x)+4 ?
*Saturday, March 16, 2013 at 8:35am by black_widow*

**Calculas**

Xcube -2x +5 divide by x+4
*Saturday, March 16, 2013 at 8:35am by no*

**pre-calculas**

An object is situated so that its center of mass is located at the origin.Three forces X,Y, and Z act on the object at the same time. Force X passes through the point (-3, -4), forve Y passes through the point (5,-12), and force Z passes throught the point (15,8). Forces X,Y, ...
*Thursday, May 10, 2012 at 11:23pm by R*

**calculas **

If f(t) = square root of 7/t^5. Find f'(x) and f'(2)
*Thursday, October 21, 2010 at 3:56pm by sandy*

**calculas**

see me after class!!
*Sunday, December 4, 2011 at 11:07pm by schroeder*

**Calculas**

square root of 2x
*Tuesday, July 24, 2012 at 9:47am by Drew*

**ap calculas**

derivative of (-x^3+3)(3x+2)^3
*Monday, March 25, 2013 at 12:18pm by Rebecca*

**Pre Calculas**

The same way you do any of these proofs. Start using the trig identities you know, to transform one side of the equation till it matches the other side. I used to love these identity proofs when I studied trig. It was amazing how many ways there were to write the same things! ...
*Wednesday, November 2, 2011 at 7:25pm by Steve*

**calculas**

is 4 square root of 12 right?
*Tuesday, December 7, 2010 at 10:00pm by Anonymous*

**Calculas**

Yes i did but tht was wrong so i am confused now...
*Tuesday, February 14, 2012 at 11:56pm by Anonymous*

**Calculas**

Never mind I got it thnks
*Tuesday, February 14, 2012 at 11:56pm by Anonymous*

**Calculas**

Find the length of the curve y=(2x), from x=1 to x=4.
*Tuesday, July 24, 2012 at 9:47am by Drew*

**ap calculas**

derivative of (2x^3+5)cos2x^5
*Monday, March 25, 2013 at 11:47am by Rebecca*

**Calculas HS**

If the average (159/2) is greater than the speedlimit...
*Thursday, November 6, 2008 at 8:05pm by bobpursley*

**CALCULAS**

POLAR EQUATION OF INWARDLY SPIRALING SPIRAL
*Saturday, February 13, 2010 at 6:57am by YAMNA*

**Calculas**

find the compute derivative of f(x)=sinh^2(5x)
*Thursday, April 12, 2012 at 12:58pm by ASB*

**calculas**

let p=(1,1,1), Q=(2,3 5), and R=(-1,3,1). find the area A of thr triangle with vertices P,Q, and R
*Tuesday, December 11, 2012 at 10:18am by Anonymous*

**calculas**

Solve following equations tan^(2 ) x-5tanx=-6
*Tuesday, March 5, 2013 at 7:40pm by preet*

**calculas**

if f(x) = a cos(kx) amplitude = a period = 2pi/k
*Wednesday, April 3, 2013 at 10:21am by Steve*

**calculas**

The function f(x)= (8x-7)e^2x has one critical number. Find it
*Thursday, November 5, 2009 at 5:08pm by jenny*

**calculas**

Expand the contents of the logarithm, then use the property that [d/du]ln(u) = u'/u.
*Monday, March 29, 2010 at 5:28pm by Marth*

**math**

int( absolute(x-1) + sqrt(9-x) ) Hint: you may interpret the integral as an area.
*Friday, February 24, 2012 at 3:25pm by Calculas*

**calculas**

I assume your temperatures are in Fahrenheit. What is k supposed to be? It should have dimensions
*Monday, March 12, 2012 at 10:11pm by drwls*

**calculas**

Write following equations in polar coordinate then graph them Y=4X
*Tuesday, March 5, 2013 at 7:37pm by preet*

**Calculas**

Find the area of the region under the curve y = 12 e ^{3 x} between x = -2.6 to x =2.6
*Saturday, March 8, 2014 at 5:43pm by ryan*

**calculas**

Question # 01 Solve the inequality and sketch the solution on a coordinate line.
*Tuesday, March 20, 2007 at 5:04pm by khan*

**Go with Damon ... Calculas**

sorry, I should really read more carefully,
*Tuesday, October 12, 2010 at 7:17pm by Reiny*

**Calculas**

F(X)=9 csc6(X) it is continous from -infity to infinity except what value?
*Wednesday, October 24, 2012 at 4:58pm by Mohammad Al-Abdullah*

**Pre Calculas**

x+y <= 60 xy = 120 so, x + 120/x <= 60 x^2 + 120 <= 60x x^2 - 60x + 120 <= 0 The two roots of this equation are x = [60√(3600-480)]/2 = 302√195 since this is a parabola which open up, it is negative between the roots. so, x ∊ [30-2√195,30+...
*Thursday, May 23, 2013 at 12:40am by Steve*

**calculas**

I would graph it, frankly. I think it has only one real root, near x=-2
*Monday, March 23, 2009 at 8:40pm by bobpursley*

**Calculas**

I stumble a question I cannot answer please help up. Find value of limit k for equation:
*Sunday, May 9, 2010 at 5:25am by Mike*

**Calculas**

did you look at the answer by MATH - Reiny, Monday, February 13, 2012 at 6:07pm ?
*Tuesday, February 14, 2012 at 11:56pm by Anonymous*

**calculas**

Find equation of all lines having slop -4 that are tangent to the curve y=16/(x-2)
*Thursday, October 24, 2013 at 3:57pm by Anood*

**Calculas**

P(4) = 100(4) - 3(16)ln(4) = .. I assume you have a calculator to get appr 333.46
*Friday, April 4, 2014 at 10:02pm by Reiny*

**11th grade-Calculas**

wait to take the derivative, should i multiple out the stuff inside the ()?
*Sunday, April 5, 2009 at 8:54pm by Anonymous*

**Calculas**

the marginal profit is dP/dx = 100 - 6x lnx - 3x so, now plug in x=4
*Friday, April 4, 2014 at 10:02pm by Steve*

**calculas**

This is simple substitution and arithmetic It is also not clear if you mean g(x) = (2/3)x or g(x) = 2/(3x) I will do a) using g(x) = (2/3)x f(-3) + g(6) = 3(-3) +1 + (2/3)(6) = -9+1+4 = 14 do b) the same way.
*Sunday, June 5, 2011 at 10:24pm by Reiny*

**Calculas**

take the derivative of cost with respect to x. SEt it equal to zero. Solve for x. I will be happy to critique your thinking.
*Friday, December 16, 2011 at 3:56pm by bobpursley*

**Pre Calculas**

Complete the identity sin theta / cos theta + cos theta / sin theta = ? Do you mean (sin theta/cos theta) + (cos theta/sin theta) ? That would equal tan x + cot x = tan x + (1/tan x) = (tan^2 x + 1)/ tan x I don't see any way to further simplify it. 1/(cosx)(sinx) or sin^2x+...
*Saturday, June 10, 2006 at 11:08pm by Robert*

**pre algebra**

5 1/8 = 4 9/8 1 7/8 = 1 7/8 subtract to get 3 2/8 = 3 1/4 Not sure I'd call this pre-algebra; just 4th grade math to me. Still, I guess all arithmetic is pre-algebra.
*Tuesday, January 22, 2013 at 3:49pm by Steve*

**calculas**

if the box is all cardboard, and AB = 193 and h=2, then something doesn't add up, since the surface area is 4(A+B)+2AB
*Monday, April 7, 2014 at 10:20pm by Steve*

**calculas**

as usual, divide the fencing equally among lengths and widths. So, I'll go ahead and predict that the solution will be 7500 x 15000
*Wednesday, February 19, 2014 at 4:47pm by Steve*

**Pre Calculus**

Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)
*Sunday, November 15, 2009 at 10:07pm by Pre Calculus*

**calculas**

Find the volume of the solid that is obtained when the region under the curve y=x+3 over the interval [5, 24] is revolved about x-axis.
*Thursday, June 28, 2012 at 9:25am by raza*

**Calculas**

If cone not cylinder then V = (1/3) h pi r^2 V = 10 pi r^2 The rest is the same
*Tuesday, October 12, 2010 at 7:17pm by Damon*

**Calculas**

Evaluate lim x→0 10x/√(9+x)-√(9-x)
*Saturday, March 16, 2013 at 8:39am by Radical Limits!*

**calculas**

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,
*Wednesday, April 3, 2013 at 10:13am by mathews*

**calculas**

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,
*Wednesday, April 3, 2013 at 10:21am by mathews*

**calculas**

Let f(x) = 1+3sin2x be a function, determin the amplitude and the period of the function,
*Wednesday, April 3, 2013 at 10:21am by mathews*

**calculas**

how to find the x intercepts for f(x) = 3x^3+7x^2+3x+1 please show your steps
*Monday, March 23, 2009 at 8:40pm by Sandra*

**Calculas**

how to find the x intercepts for f(x) = 3x^3+7x^2+3x+1 please show your steps
*Monday, March 23, 2009 at 9:42pm by Sandra*

**Math ( calculas)**

find the intervals on which the curve y=x/(x+1)^2 is concave upward or concave downward.
*Sunday, March 27, 2011 at 11:08am by Tina*

**Alegbra 1**

This is not a calculas question, this is an ALGEBRA 1 question it is for my review. That answer you gave me is not right.
*Friday, December 30, 2011 at 1:39pm by Hello*

**calculas**

Find the equations for the tangent line and normal line to the curve for f(x)=(x^4)+(2e^x) at the point (0,2)?
*Tuesday, September 28, 2010 at 12:16am by john*

**AP Calculas **

Does f(x)=(2x^3-2x)/x^3+x^2-4x-4 have any horizontal asymptotes? How can you tell?
*Thursday, October 7, 2010 at 12:10pm by Yishan shan*

**calculas**

how to find the x intercepts for f(x) = 3x^3+7x^2+3x+1
*Monday, March 23, 2009 at 8:40pm by Sandra*

**calculas**

f(x)=ln[(1+e^2x)/(e^2x-4) find the derivative
*Monday, March 29, 2010 at 5:28pm by Lori*

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