Thursday

April 24, 2014

April 24, 2014

Number of results: 49,229

**pre cal **

does anyone take pre-cal online ?
*Monday, April 16, 2012 at 6:44pm by Mecie *

**pre cal**

solve for x: x^(2/3)=(1/27) (2^(x)+4)/(2^x)=2 explain please
*Sunday, December 7, 2008 at 8:46pm by jason*

**Pre-Cal**

What is the domain of f/g? f(x) = x / x+1 g(x) = x^3 Please explain! Thank you
*Monday, March 22, 2010 at 9:44pm by Hannah*

**Pre-cal**

f(x)= x+1 and g(x)= square root of x-3 please help me!
*Thursday, December 13, 2012 at 5:57pm by Isis*

**Science**

A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
*Monday, September 26, 2011 at 1:29am by Anonymous*

**physics **

A 50 gram ice cube is cooled to -10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.) Answer A) 1250 cal. B) 4000 cal. C) 5000 cal. D) 5250 cal. Can someone please help me solve...
*Monday, September 26, 2011 at 5:17pm by Allison*

**Pre-Cal(Please help)**

h(x) = 1/x-3 + 1 I know the vertical and horizontal asymptotes but I just need to know the domain. Please help. I am very confused.
*Monday, March 29, 2010 at 6:18pm by Hannah*

**Integrated Physics and Chemistry**

The specific heat capacity of copper is 0.09 cal/gC. How much energy is needed to flow into a 10-gram sample to change its temperature from 20C to 21C? A)0.009 cal B)0.09 cal C)0.9 cal D)9 cal
*Thursday, April 21, 2011 at 10:29am by Ashley!!*

**pre cal**

please help dont understand this...Assume f(x) = 2x + 8 and g(x) = 5. What is the value of (f + g)(3)?
*Tuesday, September 27, 2011 at 2:58pm by random person*

**Pre-Cal (Please help)**

Identify any asymptotes of the graph. y = 1.08^5x I know that there is a horizontal asymptote but I do not know how to find it.
*Monday, March 22, 2010 at 4:40pm by Mark*

**Math applied/pre-cal**

(-8/5)^7/4*(-8/5)^1/4=64/25 Not sure how get this answer . Could please show me the steps.
*Wednesday, July 11, 2012 at 1:53pm by Hannah*

**math**

80 cal/g x 5 g 400g/cal or 400 cal/g not sure can any one help Neither. 80 cal/g x 5g = 400 cal. The unit g cancels to leave calories. x2+2x-15
*Monday, December 11, 2006 at 10:45pm by rena*

**pre-cal**

can anyone please explain to me how to simplify this exponential expression??I got no idea...THANKS A LOT! [(-8x^6)/(y^-6)]^2/3
*Tuesday, February 5, 2008 at 7:39pm by Kelly*

**pre-cal-please help**

find the mid point of the line segment joining the points P1 and P2. P1 = (3,5) P2 = (-4,7)
*Saturday, October 13, 2012 at 11:22am by ladybug*

**Pre-Cal**

Perform the operation and write the result in standard form. (2-3i)(5i) over 2+3i Please help!! I do not understand this.
*Wednesday, March 25, 2009 at 2:29pm by Kim*

**pre-Cal(Please help)**

Use the law of cosines to find the angle Q between the given vectors. v = 3i + j w = 2i - j
*Wednesday, March 31, 2010 at 5:34pm by Hannah*

**pre-cal**

Find the terminal point determined by t.Please enter answer in ordered pair
*Sunday, June 5, 2011 at 3:29pm by mookie*

**pre cal**

Find f of g of h and state the exact domain. f(x) = sqrt x g(x)= e^x - 13e^x/2 + 42 h(x) = 2x I need help on this one bad! Please help!
*Wednesday, October 5, 2011 at 8:51pm by Anonymous*

**pre-cal/trig**

PlEASE hlep me with this!! I need it as soon as possible....... cos(x-(pi/4))+sin(x-(pi/4))=1 Find the answer from 0 to 2pi. When I slove this, I got cosx+sinx=(1/ square root of 2). then I don't know what to do the rest. Please help me.
*Tuesday, March 4, 2008 at 7:44pm by aa*

**Pre-Cal(Please help)**

1)(1-cos^2x)(csc x) ? Is this equal to sec x? 2) Expand: log7 3 sqrt x / x^2y 3) Find and simplify: f(g) F(x) = x^2 + 2x g(x) = 2x x^2 + 2x(2x) = x^2 + 4x Is this correct?
*Monday, March 15, 2010 at 4:53pm by Hannah*

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)
*Saturday, September 17, 2011 at 2:40pm by Cristina*

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)
*Saturday, September 17, 2011 at 3:48pm by Cristina*

**Pre-Cal(Please help)**

Find two functions f and g such that (f X g)(x) = h(x). (There are many correct answers.) h(x) = 4 / (5x + 2)^2 = My answers were: f(x) = 4 / 5x, and g(x) = 5x + 2 Please explain. These answers were wrong and I do not know how to fix them!!
*Thursday, March 25, 2010 at 4:07pm by Hannah*

**Pre-Cal(Please help!!)**

Consider the function y=arcsin x. a) Use a grapging utility to complete the table. x = -1 -0.8 -0.6 -0.4 -0.2 y = ? ? ? ? ? I am not sure what to plug into the calculator to get the answer.
*Monday, February 15, 2010 at 4:41pm by Hannah*

**Pre-Cal(Please help)**

Approximate the equation's soultions in the interval (o, 2pi). If possible find the exact solutions. sin 2x sinx = cosx I do not know where to start.
*Saturday, March 6, 2010 at 6:12pm by Abby*

**Pre-Cal(Please check)**

sqrt2 /10 Do I just leave this as sqrt2/10 or can I reduce it to sqrt1/5?
*Thursday, March 11, 2010 at 3:04pm by Abbey*

**Pre-Cal**

What is the domain, range, zeros, symmetry, and is it even/odd of these functions? (how can you tell, i don't remember how you get all these, refresher please) y= 1/x y=[x] y=sq rt. of x^2 -4 y=sin x y=cos x y=tan x
*Monday, August 23, 2010 at 6:21pm by Amanda*

**Pre Cal**

what does it mean when it says describe the end behavior of f and whats that for f(x)=(x^2+x+3)/(x-1) and f(x)= 3*2^x, please explain everything, and if you use --> tell me what that means, cuz i have no clue
*Monday, July 25, 2011 at 7:49pm by Ashley*

**Pre-Cal(Please help)**

Determine the domains of (a)f and (b) f X g f(x) = 1/x g(x)= x + 3 For the domain of f I had x > 0 and for f X g I had all real numbers but this was wrong.
*Thursday, March 25, 2010 at 10:09pm by Hannah*

**Pre CAL!! Please HELP**

find the solutions of the equation that are in the interval [0,2pi) (a) sin2t+sint=0 (b)cost-sin2t=0
*Thursday, November 4, 2010 at 8:52pm by Hayli*

**Pre CAL!! Please HELP**

find the solutions of the equation that are in the interval [0,2pi) (a) sin2t+sint=0 (b)cost-sin2t=0
*Thursday, November 4, 2010 at 8:56pm by Hayli*

**Pre cal**

)a function f is defined as f(x) = 3*2^x describe the end behavior of f, please describe in detail how you got the answer and explain your abbreviations.
*Monday, July 25, 2011 at 9:25pm by Ashley*

**Chemistry**

Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
*Monday, November 16, 2009 at 8:45am by Christina*

**Chemistry Help!!!!**

Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
*Monday, November 16, 2009 at 1:43pm by Christina*

**Chemistry**

Calculate S (measure of total entropy) for the following reaction at 25C and 1atm, and tell whether the entropy is increasing or decreasing. C3H8(g)+5O2(g)-> 3CO2(g)+4H2O(g) S of C3H8=64.5 cal/(mol*K) S of O2= 49 cal/(mol*K) S of CO2= 51.1 cal/(mol*K) S of H2O= 45.1 cal/(...
*Monday, November 16, 2009 at 9:03pm by Christina*

**Pre-Cal(Please help)**

1) Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 degrees 30'
*Monday, March 8, 2010 at 5:13pm by Abbey*

**Pre-Cal(Please help)**

solve for r There is a right triangle with the hypotenuse as r , the angle as 45 degrees and opposite side as 20. I am having a hard time finding this out. I had tan 45 = 1.61 20(1.61) = 32.4 but this is wrong.
*Tuesday, March 23, 2010 at 1:05pm by Hannah*

**pre-cal**

Can someone please show me how to find an equation for the line with the given properties. Parellel to the lines 3x-y= -3; containing the point (0,0) y= (then type your answer in slope intercept form)
*Saturday, October 13, 2012 at 11:45am by ladybug*

**Chemistry**

How much heat is released when 10 g of steam at 100C is cooled to 10 g of liquid water at 100C? I am working on a practice test and the answer is not in the back of the book. Can some one help me. 1. 10 cal 2. 5400 cal 3. 800 cal 4. 6200 cal
*Thursday, November 10, 2011 at 2:40am by nan*

**chemistry**

How many calories are required to heat 25.0 g of platinum from 24.5 C to 75C (specific heat of platinum = 0.139 J/gK)? 1. 47 cal 2. 42 cal 3. 48 cal 4. 20 cal 5. 80 cal Thank you.
*Sunday, November 22, 2009 at 5:30pm by Danny*

**Pre-Cal**

xy=2 {{x^2=3+y^2}}
*Tuesday, October 21, 2008 at 6:16pm by Ash*

**Pre Cal**

1 --------- 2x^2-2 --------------- 2 + x ---- ------- x+11 x^2-2x-3
*Friday, January 29, 2010 at 1:08pm by Lauren*

**pre cal**

3(2x-1)^2 (2) (x+3)^1/2 + (2x-1)^3 (1/2) (x+3)^-1/2
*Wednesday, February 13, 2013 at 5:08pm by shenyce*

**Pre cal**

ix^2-2x+i=0
*Sunday, March 17, 2013 at 6:21pm by Anonymous*

**Pre-Cal(Please help)**

Give the domain of the function and identify any vertical or horizontal asymptotes. h(x) = 1 / x - 3 + 1 I had x = 0 and y = 3. Would the domain be all numbers except 1?
*Friday, March 26, 2010 at 12:17am by Hannah*

**Pre-Cal(Please help)**

Use synthetic division to show that x is a solution of the third-degree polynomial equation, and use the result to factor the polynomial completely. List all the real zeros of the function. x^3 - 28x - 48 = 0 Value of x = -4 Please help!!Thank you
*Saturday, March 27, 2010 at 5:48pm by Abbey*

**Pre-Cal(Please check!!!)**

solve for r There is a right triangle with the hypotenuse as r , the angle as 45 degrees and opposite side as 20. I am having a hard time finding this out. I had tan 45 = 1.61 20(1.61) = 32.4 but this is wrong.
*Tuesday, March 23, 2010 at 4:09pm by Abbey*

**pre-cal**

A "super ball" dropped from a height of x feet bounces to a height y that is 80% of x. Can anyone please teach me how to find its numerical, algebraic, and graphical representations? Thanks a lot!!!
*Saturday, March 1, 2008 at 10:14pm by Lusi*

**Pre-Cal**

1) use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67 degrees and 30' Please explain!! I do not know how to start.
*Monday, March 1, 2010 at 3:56pm by Janet*

**pre - cal**

12-5y^2 what's the question?
*Monday, August 20, 2007 at 10:32pm by Anonymous*

**Pre-Cal**

What are bearings??
*Tuesday, February 5, 2008 at 12:34pm by Daisy M.*

**pre cal**

what is the sum of e or 1n
*Sunday, January 11, 2009 at 6:07pm by ash*

**Pre Cal**

Solve for x 2^x=8^x-3
*Tuesday, December 22, 2009 at 2:53am by Raina*

**pre cal**

solve for x 8x-(2x-1)=3x-10
*Monday, February 1, 2010 at 12:06pm by deonte*

**Pre Cal**

What is the inverse of g(x)= 1/2(x-1)^3-4
*Monday, October 25, 2010 at 1:17am by Katie*

**pre cal**

(y^2)^-4y^8 simplify
*Thursday, August 30, 2012 at 11:20pm by jennifer*

**Pre-Cal.**

How does this go from x^2+ to 2i, explain.
*Tuesday, January 8, 2013 at 4:54pm by phyllys*

**Pre-Cal**

tan-1=43\9.3
*Wednesday, May 1, 2013 at 8:01pm by Anonymous*

**Pre-Cal **

2y=cos(4(t-6))+6
*Tuesday, April 22, 2014 at 8:21pm by Anonymous*

**Pre-Cal**

Find two functions f and g such that (f X g)(x) = h(x). (There are many correct answers.) h(x) = 4 / (5x + 2)^2 = My answers were: f(x) = 4 / 5x, and g(x) = 5x + 2 Please explain. These answers were wrong and I do not know how to fix them!!
*Thursday, March 25, 2010 at 8:17pm by Hannah*

**college (Physical Science/Physics)**

I am having difficulty with this equation. I have been working with it for several weeks! Please Help. the equation is this: solve for Lf Lf=[(CwMw+CsMs+CcMc)(To-Tf)//Mi-CwTf values Cw=1.00; Mw=143.4; Cs=0.11; Ms=30.0; Cc=0.22; Mc=57.7;To=23.9; Tf=14.2;Mi=16.7 I keep comming ...
*Friday, April 17, 2009 at 5:43pm by Jennifer*

**Pre-Cal Help Please!!**

Use logarithms to solve the given equation. (Round the answer to four decimal places.) 6(1.02^3x + 1) = 11 How do i find the answer after 1.03^3x +1 = (11/6) Do i put a log on 1.03 or do I do something else Thank you.
*Tuesday, February 28, 2012 at 6:49pm by Ann*

**pre-cal**

find the value(s) of x for which f(x)=g(x). f(x)=x^4-2x^2,g(x)=2x^2
*Tuesday, August 28, 2007 at 6:22pm by Kira*

**Pre-Cal (again)**

If: f(x)= 3/x^2-1 g(x)= x+1 What is the domain of f, g, and f o g?
*Saturday, September 20, 2008 at 9:19pm by Crystal*

**pre cal**

What would cos2theta=-1/2 be???
*Saturday, November 15, 2008 at 2:45pm by becca*

**Pre-Cal**

Find f X g 3 sqrt of x+1 X x^3+1
*Thursday, February 26, 2009 at 11:32pm by Dan*

**Pre-Cal**

Simplify e^3ln2-1
*Saturday, January 9, 2010 at 11:02pm by jamie*

**pre-cal**

(576^1/2+512^1/3)^1/3
*Monday, May 31, 2010 at 7:53pm by Soto*

**pre-cal**

tan((theta/2)+(pi/6))=-1
*Saturday, July 2, 2011 at 12:37am by vince*

**Pre Cal**

simplify the quotient: [x(5x+1)-3(x^2+1)]/ [(x-1)^2]
*Sunday, July 24, 2011 at 7:29pm by Ashley*

**Pre Cal**

cos^2+tan^2=1
*Sunday, March 25, 2012 at 7:56pm by Trevion*

**Pre Cal**

cos 75 deg
*Monday, April 9, 2012 at 12:27pm by Kara*

**pre cal**

7tan^2(pheta)-2=3
*Thursday, June 28, 2012 at 10:48pm by Maria*

**pre-cal**

f(x)=((6xy^3)^1/2)((30x^4y^6)^1/2)/(5x^-7y^4)^1/2
*Thursday, August 30, 2012 at 4:16pm by Anonymous*

**Pre Cal**

f(x) = log3(93 x + 3 815 x + 3)
*Tuesday, October 2, 2012 at 11:29pm by Sally*

**pre-cal**

find the intercepts of y=2x-4
*Saturday, October 13, 2012 at 5:21pm by ladybug*

**Pre-Cal.**

f(x)=x^3-3x^2+x-12 =x^2(x-3)+4(x-3) =x^2+4) (x-3) so if f(x) = 0 at x = 3,+/- 2i. what is the f(x) factored form
*Sunday, January 6, 2013 at 5:56pm by phyllys*

**PRE-CAL**

SIMPLIFY 55/SQUARE ROOT OF 20 -3
*Monday, September 10, 2007 at 9:08pm by JIM*

**Pre-Cal.**

Describe the end behavior of f(x)=2x^4-5x+1: A. x-->, f(x)-->; x-->-, f(x)-->- B. x-->, f(x)-->; x-->-, f(x)--> C. x-->, f(x)-->-; x-->-, f(x)--> D. x-->, f(x)-->-; x-->-, f(x)-->-
*Tuesday, March 17, 2009 at 2:35pm by Mia*

**Pre-Cal**

solve(5-x)^-3=8 teach if possibe if not, its ok Thanks
*Sunday, January 10, 2010 at 4:15pm by jamie*

**Pre-Cal**

Find the inverse of the function f(x) = 3^x+2
*Friday, March 19, 2010 at 3:22pm by Mark*

**Pre-Cal**

Identify any asymptotes of the graph. y = 1.08^5x
*Sunday, March 21, 2010 at 1:47pm by Mark*

**Pre-Cal**

what about the domain of 1/x. Would it be 0?
*Thursday, March 25, 2010 at 10:22pm by Hannah*

**pre-cal**

solve this system of equation 3x-y+5z-2w=-44 x+6y+4z-w=1 5x-y+z+3w=-15 4y-z-8w=58
*Wednesday, May 5, 2010 at 10:28pm by jenny*

**Pre-Cal**

Find the domain for the function f(x)=-2x^(2)-x^(2)-6x-27
*Saturday, December 11, 2010 at 9:51am by Terri*

**pre-cal**

what is the vertex and directrix of the parabola y=-1/2x^2 + 10 - 46
*Monday, April 25, 2011 at 2:16pm by sonia*

**pre cal**

[root2(cos2pi/11+isin2pi/11)]^4
*Friday, May 20, 2011 at 4:09pm by joe*

**Pre Cal**

the function y= tan (x/3) has an x intercept at?
*Sunday, July 24, 2011 at 6:13pm by Ash*

**pre cal 2 **

solve the equation 4cos^2x-1=0
*Sunday, July 24, 2011 at 8:54pm by kc*

**Pre Cal**

simplify the quotient: [(x+1)^3(4x-9)-(16x+9)(x+1)^2]/[(x-6)(x+1)^3]
*Sunday, July 24, 2011 at 9:12pm by Angela*

**pre-cal**

Find B so that F(x)=-x^2+bx-75 has a maximum value of 25.
*Monday, October 24, 2011 at 9:07pm by tracy*

**Pre-Cal**

find the value of the function k(p/q)
*Friday, December 16, 2011 at 2:43am by Joe*

**Pre-cal**

Does the equation x^2+x-12/x+2 have holes?
*Wednesday, March 21, 2012 at 11:15pm by Monique*

**Pre-cal**

10.2 can someone show me this graph(x+2)^2/4+(y+2)^2/15=1
*Wednesday, April 18, 2012 at 10:10am by sandra*

**Pre cal**

Sec^2x=2 With 10 different answers
*Friday, June 29, 2012 at 2:38pm by Terri*

**pre-cal**

solve the equation algebraically. 7e^x=11-e^-x
*Tuesday, October 9, 2012 at 10:02pm by ladybug*

**pre-cal**

Find the real zeros of f (x)= 2x^3 + 2x^3 8x + 3
*Thursday, October 11, 2012 at 10:26pm by ladybug*

**pre-cal**

Find the real zeros of f (x)= 2x^3 + 3x^2 8x + 3
*Friday, October 12, 2012 at 12:32am by ladybug*

**pre-cal**

find the distance d (P1 P2) between the P1 and P2 P1=(-1,1);P2=(1,2)
*Friday, October 12, 2012 at 10:35pm by ladybug*

**Pre Cal**

What is the phase shift of F(x) = 3 sin (2x - 2)?
*Thursday, November 15, 2012 at 10:06am by Candace*

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