Wednesday

September 17, 2014

September 17, 2014

Number of results: 51,800

**Pre-Calc**

Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
*October 3, 2011 by Leah*

**Pre-Calc**

I'm stuck on a pre-calc problem. I need to find y as a function of x, where the constant c is a positive number for In(y-1)+In(y+1)= -x+c express your question as ln[(y-1)(y+1)] = -x+c change that to exponential form e^(-x+c) = (y-1)(y+1) e^(-x+c) = y^2 - 1 y^2 = e^(-x+c) + 1 ...
*May 9, 2007 by Sarah*

**Pre Calc**

please h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 2 2 5 7 6 7
*December 7, 2009 by Jo*

**Pre Calc**

Simplify (n+1)!/(n-1)! Help please?
*March 15, 2009 by MW*

**Pre calc**

Please finish y+7=6/7x-30/7
*January 25, 2013 by Joe*

**Pre-Calculus**

Can you show me how to find the rectangular equation: r=2cos(theta) + 3 sin (theta) All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
*October 3, 2011 by Leah*

**Pre-Calc/Calc**

Which set of parametric equations corresponds to this rectangular equation? y=2x-(x^2 / 10) A. x=4t, y=4t-(t^2 /10) B. x=2t, y=8t-(4t^2/10) C. x=2t, y=4t-(4t^2/10) D. x=.5t, y=2t-(t^2/10) E. x=t, y=t-(t^2/10)
*April 17, 2013 by Chris Math Hw Help*

**Help please!! For pre-calc**

Logx16=-2 how do you solve this?
*December 10, 2013 by Anonymous *

**Math**

Please someone help with my pre calc question!
*February 11, 2013 by Anthony *

**Pre Calc**

Does this: sqrt 3x-4=(x-4)^2-3 Multiply out to: x^4-16x^3+90^2-211x+173 I then need to put it in the graphing calc and see what the roots are.
*September 10, 2009 by muffy*

**Pre-Calc**

Can you someone please help me with this question??? Simplify cot(x + pi)
*May 22, 2011 by Emily*

**Pre-Calc**

cosx/(1+secx) Please help me simplify this expression.
*November 1, 2012 by Gaby*

**pre calc**

Simplify- (x^2+2x)/(x^2-x) *I got x(x+2) for the numerator and I couldn't get the denominator, but it was wrong help please
*February 23, 2010 by Karissa*

**PRE CALC **

please help me solve this partial-fraction decomposition! 12x-57/(x-3)(x-10)
*May 15, 2011 by esora*

**pre-calc **

cos x+sec x=2 if you could please show all work
*November 20, 2012 by Haley*

**Pre Calc**

In triangle ABC, b=14, c=15, and cos a= 3/5. Find a)side a b) Sin B Help please?
*April 13, 2009 by MW*

**Pre-Calc**

Determine the solution. x^2=|x|algebraically I have no idea how to proceed with this. Can you please help?
*September 26, 2009 by MUFFY*

**Pre-Calc**

Please help me with this problem-I'm stuck (x-2)/(x+2) = (x+10)/x I'm not even sure where to start-Thanks for any help you can provide
*September 18, 2011 by Josh*

**PRE CALC PLEASE HELP!!!!!!!!**

find the solutions of the equation that are in the interval [0,2pi) 2-cos^2x=4sin^2(1/2x)
*November 4, 2010 by Hayli*

**Pre-Calc**

Can someone show me how to do this please. I am stuck. find a number x such that e^2x 12e^x =13
*December 9, 2010 by Roy*

**Pre-Calc**

I have to solve these using matrices by hand. Can someone please help me? 2x-3y-2z=4 (1/4)x-(2/5)y+(3/4)z=(-1/3) -2x+1.3y-3z=5 Thank you so much! :)
*December 3, 2012 by Tori*

**pre-calc HELP PLEASE**

solve using identities for all angles (dont use multiple angle method)show work please cuz i am so confused. 2sin2x-3sinx=0
*April 24, 2012 by Kimberly*

**Math, Pre Calc**

Given that (+-2) and i are the roots of a 4th degree polynomical, find the equation. Please help! Thank you:)
*September 5, 2012 by Nikki*

**Calc or Pre calc**

I am having trouble doing this problem. I know how to do indefinate integrals, but I don't know how to do definate integrals. Can you show me how to do this. Evaluate 5 (x^3-2x)dx 2
*May 14, 2008 by jennifer*

**Pre-Calc**

I am stuck solving this problem, any help please..Many thanks find all numbers x that satisfy the given equation ln(2x) ------- =2 ln(3x)
*December 9, 2010 by Roy*

**Pre-Calc-Please check my answer**

Please help-I'm stuck really bad Thank you for any help you can provide What are the roots of the equation x^2 -4x + 3 = 0 x^2 - 4x = 3 x^2 +2(-2)x + -2^2 = -3 = -2^2 x^2 + -4x + 4 = 1 (x + -2)^2 = 1 qrt (x+-2)^2 = sqrt 1 x+-2 = plus or minus 1 therefore x=1 x=3 roots are 1 ...
*September 6, 2011 by Sheila*

**Pre Calc**

lim x approaches 0 [1/x *((1/(sqrt(1+x))-1)] It will be easier to understand if you write it out.. How would I algebraically do this? (The answer is -1/2) Help please?
*March 18, 2009 by MW*

**pre calc**

write the form of the partial decomposition for the given rational expression. Don't solve for constants: 8x+10/x^2+7x-18 please show work!
*May 12, 2011 by esora*

**Pre-Calc**

Please help me solve these two equations!! Divide and express as a polynomial: 12a^8b^5 - 9a^14b^15 + 6a^6b^10 _____________________________________ 3a^2b^5 Simplify: a/b - b/a __________ a-b/b
*November 27, 2013 by Maggie*

**Pre-Calc**

For the triangle shown, find the length AD. (Assume u = 18, v = 18, x = 10, and y = 10. Round your answer to two decimal places.) Show work please!!!
*April 2, 2012 by Mike*

**pre-calc helpppp**

Evaluate the expression under the given conditions (show steps please) sin(/2); tan = − 5 / 12 , in Quadrant IV
*April 21, 2012 by John*

**pre-calc**

(1+tan x)^2= 2 tan x+2 please show all work
*November 20, 2012 by Haley*

**Pre-Calc**

I am seeking help with this problem Please...Thank you! Find the point on the line y=x+3 in the xy-plane that is closest to the point (3, 2)
*December 7, 2010 by Roy*

**Pre-Calc**

I'm so stuck-this stuff is so far above me right now-Please help (3x^3-5^2+6x-9)/(x+5) or can someone direct me to a site that can solve this and show the steps-I don't even know where to start Thank you
*September 9, 2011 by Jonah*

**Pre Calc**

find the magnitude and direction angle of the vector v, v=-2i+5j please help i have no idea how to do this. could you show me step by step?
*June 2, 2010 by Nate*

**Pre-Calc help NOW PLEASE!!!**

Evaluate the expression under the given conditions. tan(A+B); cosA=-1/7, A in quadrant 3, sinB=1/2, B in quadrant 2.
*April 18, 2012 by Josh*

**PRE-CALC**

Determine the domain of the following function: f(x)=sqrt x-7/x^2-5x-6 I think the domain is [7,all real numbers) Can you please tell me if this is correct?
*September 21, 2009 by MUFFY*

**Pre-CALC**

Can anyone help me with this problem step by step please... Find the area inside the ellipse in the xy-plane determined by the given equation x^2 y^2 ____ + ___ =1 10 25
*December 7, 2010 by Amy*

**Pre-Calc Help**

Evaluate the expression under the given conditions. (show work please) sin(A-B); tan A=12/5, A in quadrant 3, sinB=-3sqrt(10)/10, B in quadrant 4.
*April 19, 2012 by Daniel*

**pre-calc helpppp**

Find sin x/2, cos x/2, and tan x/2 from the given information. (show work please) thank you!!! cos x = − 4/5, 180 < x < 270
*April 21, 2012 by John*

**Pre-Calc**

Simplify the difference quotient [f(2 + h) − f(2)]/h ; if h ≠ 0. f(x) = x2 − 3x I keep getting the answer wrong. I must be messing up my steps...Please Help
*January 20, 2014 by Kerri*

**pre calc**

area of triangle XYZ given:side z=11 side x=7 and side y=13 what are the angles and area please? please explain
*December 8, 2011 by jim*

**Pre Calc**

How do I do this?... Sq Rt[(9*Sq Rt(3x^2))]
*March 14, 2009 by MW*

**pre calc**

13-5e^2x=3
*October 30, 2009 by Laurie*

**Pre Calc**

h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 5 8 1 5 2 7 6 5
*November 13, 2009 by Pre Calc*

**pre calc**

(1/x^2-49)/(1/x+7)?
*February 23, 2010 by Karissa*

**pre-calc**

(3^-2+4^-2)^-1/2
*February 16, 2011 by megan*

**pre-calc**

(3^-2+4^-2)^-1/2
*February 16, 2011 by megan*

**Pre-Calc**

2-2
*April 10, 2011 by Chelsey*

**pre calc**

g(1/2)=-(1/2)^2+7(1/2)-7
*January 25, 2012 by Dorene*

**Pre-Calc**

Use the fundamental identities and appropriate algebraic operations to simplify the expression. cosx / (1+sinx) Answer: secx Can someone please assist as to how I get to the answer?
*April 28, 2011 by Lizette*

**Pre-calc**

If llull=1 and llvll=3, and the vectors maek angles of 170 degrees and 130 degrees with the x-axis respectively, find the component form of the sum of u and V. Please help thanks!
*February 13, 2012 by Casandra*

**pre-calc**

(8y2+3y-7)(3y+4)
*October 17, 2007 by steven*

**pre-calc**

how do i solve this w(4-w^2)=8-w^3
*August 27, 2008 by jared*

**Pre Calc**

the domain of g(x)=x^3-2x-1
*October 6, 2008 by Crystal*

**pre-calc**

what does this simplify to: f(x)=x/(x+4)^(1/5)-2
*January 4, 2009 by Allie*

**pre calc**

f(x)=1/x+2 how do i solve this
*September 21, 2009 by Anonymous*

**Pre-Calc**

f/g=? Given that f(x)=x^2-9 x and g(x)=x + 14
*February 17, 2010 by Channing*

**Pre Calc**

Solve for x: |4x+6|-|2x-1|<5
*September 1, 2010 by Katie S*

**Pre Calc**

Simplify: n!-(n-1)! --------- (n-1)!
*September 1, 2010 by Katie S*

**Pre Calc**

Solve for A and B if: 1 A B ----- = --- + --- k(k+1) k k+1
*September 12, 2010 by Lauren*

**pre calc**

(4^x2)^2 mulipled by 1/(4^5x)=64
*October 18, 2010 by sarah*

**pre calc**

simplify: 2^x X 2^y +2^x X 2^y + 2^x X 2^y + 2^x X 2^y
*December 21, 2010 by Bill*

**Pre Calc**

ln (x^2 +x-12)=3ln2
*March 29, 2011 by Meredith *

**pre-calc**

what are the asymtopes of 2x/x-3
*May 22, 2011 by caitlyn*

**Pre-calc**

Logx16=-2
*December 10, 2013 by Anonymous *

**pre-calc**

3-log(x+2)=5
*March 20, 2014 by Anonymous*

**pre calc**

solve each inequality: (x-4)(x-2)^2(x-3)^2 < 0
*January 28, 2008 by Kate*

**Pre Calc**

solve the quation. t/3+t/5=1.
*August 28, 2008 by Maggie*

**pre-calc**

how would you solve x^(5/2)(x^(1/2)- 1/x^(1/2))
*November 20, 2008 by Allie*

**pre-calc**

for f(x)=2^x is f(x) an increasing function.?
*December 10, 2008 by mariah*

**pre-calc**

for f(x)=2^x is f(x) an increasing function.?
*December 10, 2008 by mariah*

**pre calc**

how do you put these in y=mx+b form 3x+5y=8 16-5x=2y
*February 9, 2009 by kate*

**pre calc need help**

solve. 4x+2/3 - 3/4 = 1/2
*April 29, 2009 by brown*

**pre calc**

what is the domain and range of f(x) x^3?
*May 7, 2009 by tom*

**pre calc**

f(x)= x^2+5 g(x)= square root x-1 (f/g)(x)
*May 11, 2009 by tim*

**pre calc**

Example 1: Let f(x) = ex and g(x) = x Find: (a) f(g(x)) (b) g(f(x))
*January 4, 2010 by kate*

**Algebra II/ Pre Calc**

ln(12+x)= It is not (ln 12)(ln x) or (ln12x)
*September 6, 2010 by Jessica*

**Pre-Calc**

300=5000^e*.3x
*March 27, 2011 by Linda*

**pre calc**

lnX + ln2 = 3
*March 24, 2011 by Linda*

**pre calc**

lnX + ln2 = 3
*March 24, 2011 by jenna*

**Pre calc**

.5ln(x+3) - lnx=0
*March 29, 2011 by Laura grace*

**Pre-Calc**

How would I solve: X^(4/3)+X^(2/3)=28
*June 23, 2011 by Maddy*

**Pre-Calc**

cot 19.8 degrees
*July 30, 2011 by Betsy*

**pre-calc**

How do u solve (f-g)(x) when f(x)=4x/7 +7 and g(x)=-6/x Ok so its (f-g)(x)=4x/7 +7 - (-6/x) But how do u simplify it from there? Thanks!
*October 5, 2011 by cade*

**Pre Calc**

sec(cos-1 (4/5))=?
*November 15, 2011 by Jacob*

**math pre calc**

solve for x. 8^6+3x=16
*March 25, 2012 by danielle*

**Pre-Calc Help!!!!!!!!**

cos(2tan^-1(15/8))
*April 19, 2012 by Amanda*

**Pre-calc**

Focus of the ellipse 9x^2+2y^2=36
*May 15, 2012 by Jack*

**pre calc**

3x + 2iy =6 + 10i
*August 30, 2012 by merril*

**Pre-calc**

Solve 3.3= 1.005^n
*August 30, 2012 by Alex*

**pre-calc/ trig**

Sinx=0
*October 15, 2013 by Amy*

**Pre-Calc**

How do I solve this equation? 4^x * (1/2)^3-2x = 8*(2^x)^2
*February 15, 2014 by Kay. *

**Pre-Calc**

Eliminate the parameter x = t^2 - 1 and y = t^2 + t
*March 2, 2014 by Jackie*

**Pre calc**

y=5tan1/2(x+pi/4) What is the period?
*March 28, 2014 by Deena*

**Pre-calc**

2x^2 - 12x - 3y^2 - 24y +60 = 0
*April 2, 2014 by Laila*

**Pre-Calc**

Evaluate the expression without using a calculator(show work please)? (sin pi/4 cos pi/6 - sin pi/6 cos pi/4) the answer is 1/4(2-3)
*March 23, 2012 by John *

**Pre-Calc/Trig**

Please help-I'm stuck really bad What are the roots of the equation x^2 - 4x + 3 = 0 I think I was suppose to use b^2 - 4ac so it would be -4 - (-4)*1*3 = 12 so the roots would be 12 and -12 Thank you for any help you can provide
*September 6, 2011 by Sheila*

**Pre-calc PLEASE HELP!**

Calculate the exact values of the cot(theta) and sin(theta) for the acute angle theta if sec(theta)= the square root of 6. Thank you so much!
*December 9, 2011 by Jill*

**Pre-Calc-please check**

Please check this for me expand (3z-2b)^5 using Binomial Theorem (a+b)^n = n on top sigma in middle k=0 to right (n/k)a^(n-k)b^k (3a-2b)^5 = 5 on top sigma in middle k=0 on bottom(5/k)(3a)^5-k(-2b)^k (5/0)(3a)^5(-2b)^0+(5/1)(3a)^4(-2b)^1 +(5/2)(3a)^3(-2b)^2 +(5/3)(3a)^2(-2b)^3...
*January 4, 2012 by Bethany*

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