Saturday
May 25, 2013

Number of results: 80,476

Pre-Cal
Yes I am, but I don't understand it. I don't have a teacher to teach me. I do my work online, and I just need 2nd semester of pre-cal to graduate.
Saturday, March 17, 2012 at 9:29pm by Adrianna

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

pre-cal
pre-cal? more like algebra I must be the review section for the x-intercept, set y=0: x=1 for the y-intercept, set x=0: y = -2
Sunday, December 9, 2012 at 11:59am by Steve

Pre Cal
Monday, July 25, 2011 at 3:04pm by Ashley

Error
Tuesday, March 23, 2010 at 1:05pm by Mark

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

Pre-cal
Thursday, December 13, 2012 at 5:57pm by Isis

Sunday, April 4, 2010 at 3:59pm by Abbey

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
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

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

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

Nevermind I think I figured it out.
Saturday, March 27, 2010 at 5:48pm by Abbey

pre-cal/trig
if you get to cosx+sinx=1/square root of 2, well we are doing identities in my pre-cal class and cosx+sinx always equals 1, so it would be 1/square root of 2.
Tuesday, March 4, 2008 at 7:44pm by emily

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

1/(x+3) domain everywhere on x axis except x = -3 where the denominator is zero.
Thursday, March 25, 2010 at 10:09pm by Damon

PRE-CALC still stuck
Pre-cal? V=kT V=kr^2 I=V(1/R)
Sunday, October 18, 2009 at 5:55pm by bobpursley

pre-cal
can you please tell me the differences and examples of the numerical,algebraic, and graphical representations?
Saturday, March 1, 2008 at 10:14pm by Lusi

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

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

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

Pre Cal(please show me the work)
wait I forgot to add that she bought the card origionally for \$1
Tuesday, March 18, 2008 at 3:42pm by Brittany

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

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

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(please show me the work)
then as I said replace a with 1 in t/9 = log(32/a) to get t = 9log32 = 13.55 years
Tuesday, March 18, 2008 at 3:42pm by Reiny

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

chemistry
How many calories are required to heat 25.0 g of platinum from 24.5 °C to 75°C (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

science
the conversion factor for calories (cal) and joules (J) is: 1 cal = 4.184 J now to convert calories to joules, we multiply 4000 cal by 4.184 J / 1 cal so that the cal unit will be canceled, and the numerator will have the unit J: 4000 cal * 4.184 J / cal = 16736 J hope this ...
Wednesday, October 26, 2011 at 3:09am by Jai

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/trig
Can Anybody answer this question for me???? Please??? 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
Tuesday, March 4, 2008 at 7:44pm by ^quen^

the midpoint is the average of the x's and the average of the y's let me know what you got.
Saturday, October 13, 2012 at 11:22am by Reiny

Pre-Cal
Find the standard form of the equation of the ellipse. (Remember center is midpoint between either foci or vertices) (1) 9x^2+4y^2+36x-24y+36=0 (2) Vertices: (0,5)(0,-5) Passes through the point (4,2) Centered at the origin
Sunday, April 19, 2009 at 6:33pm by Cal

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

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

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

i did -2/3 divided by 15, 10, -6, 0 and 14 I got 15, 0, -6 , 4 ,11.4 Is this correct?
Saturday, March 27, 2010 at 5:38pm by Abbey

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

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 &gt; 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
)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

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
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 --&gt; tell me what that means, cuz i have no clue
Monday, July 25, 2011 at 7:49pm by Ashley

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
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

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-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)=&#8730;x^2-1 (that's square root of x^2-1) thank you so much for the ...
Saturday, September 17, 2011 at 3:48pm 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)=&#8730;x^2-1 (that's square root of x^2-1) thank you so much for the ...
Saturday, September 17, 2011 at 2:40pm by Cristina

v•w = |v| |w|cos Ø v•w = 6 - 1 = 5 5 = &#8730;10&#8730;5cosØ cosØ = 5/&#8730;50 Ø = 45°
Wednesday, March 31, 2010 at 5:34pm by Reiny

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

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

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

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)-&gt; 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

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)-&gt; 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)-&gt; 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
You don't need the heat of vaporization to do that calculation. It takes 10g*1Cal/C g*10C = 100 Cal heat release to reduce the temperature ot 0C, and another 80 Cal/g*10 g = 800 Cal to freeze it. The sum is 900 Cal
Saturday, April 17, 2010 at 12:35am by drwls

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

-(-2) + sqrt 4 - (-2)^2 = 2 + sqrt 4 + 4 No 2 + sqrt 4 - 4
Tuesday, March 16, 2010 at 1:47am by Damon

Pre-cal/Trig
(tan/(1+sec)) + ((1+sec)/tan) = 2csc (Show all work please.)
Monday, February 21, 2011 at 9:44pm by Katherine

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
to do what?
Thursday, December 13, 2012 at 5:57pm by Steve

Pre-cal
thank you
Wednesday, April 18, 2012 at 10:10am by sandra

Pre-Cal
thanks
Saturday, March 17, 2012 at 9:29pm by Adrianna

Pre Cal
Thank you!!!
Monday, February 13, 2012 at 11:06pm by Anonymous

Pre Cal
why and how do you know
Monday, July 25, 2011 at 3:04pm by Ashley

Pre Cal
b)
Monday, July 25, 2011 at 3:04pm by Anonymous

pre cal
4
Sunday, September 19, 2010 at 11:47pm by Anonymous

Pre-Cal
Thank You
Sunday, April 4, 2010 at 5:30pm by Abbey

Pre-Cal
Thank You!!
Sunday, March 28, 2010 at 12:54pm by Hannah

Pre-Cal
Thank You
Saturday, March 27, 2010 at 5:38pm by Abbey

Pre cal
OK. Thanks. =]
Saturday, August 29, 2009 at 6:12pm by Anonymous

Pre. Cal.
yes
Thursday, May 14, 2009 at 10:43pm by Reiny

college maths
Mathematically, you can set up the problem as follow: 232 Cal/1.5 Cup = x Cal/1 cup 1x = 232/1.5 x = 154.7 Cal Another way, this is a no brainer question given the choices below. With 1.5 cup, you know it has 232 Cal, so with only 1 cup, you know the answer should be less than...
Wednesday, December 15, 2010 at 2:16pm by Terry

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

Find (a) f X g , (b) g X f, and (c) f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For the f(x) the 3 is little above the sqrt sign. my answers were: (a) = 3sqrt x^4 -1 (b) = x^4 -1 (c) = 6sqrt x+1 These answers are wrong but I do not know how to do this.
Thursday, March 25, 2010 at 3:58pm by Hannah

1)f(x) = -x + sqrt 4 - x^2 Find f(-2) -(-2) + sqrt 4 - (-2)^2 = 2 + sqrt 4 + 4 2 + sqrt 8 = 4.828 Is this correct?
Tuesday, March 16, 2010 at 1:47am by Hannah

Chemistry
1.24E7 J x (1 cal/4.184J) = 2.98E6 cal. 12 oz x 2.98E6 cal/80,000 cal = ?oz Gatorade.
Saturday, April 20, 2013 at 7:55pm by DrBob222

Pre-Cal
Find f X g , g X f , and f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For f(x) the 3 is little above the sqrt sign. My answers were: f(g(x)) = 3sqrt x^3 + 1 -1 g(f(x)) = 3sqrt (x-1)^3 -1 f(f) = 3sqrt x-1-1 My teacher said these were wrong. Please help. I do not know how to correct ...
Monday, March 29, 2010 at 11:06pm by Hannah

Pre-Cal
Find f X g , g X f , and f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For f(x) the 3 is little above the sqrt sign. My answers were: f(g(x)) = 3sqrt x^3 + 1 -1 g(f(x)) = 3sqrt (x-1)^3 -1 f(f) = 3sqrt x-1-1 My teacher said these were wrong. Please help. I do not know how to correct ...
Monday, March 29, 2010 at 4:18pm by Hannah

Chemistry
Do you know the conversion factor? 1 cal = 4.184 joules and I get 4565 cal. Is that a capital C for cal. In nutrition, especially in the old days, there was a big calorie (actually a kilocalorie or Calorie) and a small calorie (a calorie). If we round the 5 to the even number...
Friday, October 30, 2009 at 7:22pm by DrBob222

pre-cal
Please state your question more clearly. What do you mean by "t values" and "primary cycle"? I have never heard of inflection points referred to as "key points", or vice versa.
Monday, March 5, 2012 at 11:22pm by drwls

pre cal
what is the question?
Wednesday, February 13, 2013 at 5:08pm by bobpursley

Pre-Cal
#3 = B 95
Saturday, March 17, 2012 at 10:21pm by Ryan

Pre-cal
123694587
Thursday, May 6, 2010 at 7:21pm by Anonymous

pre-cal
wrong
Tuesday, June 5, 2007 at 10:24pm by BIGfckNigga

Translation
It is pre-cal
Friday, March 23, 2012 at 4:25pm by Sebastian

pre-cal
no "t" in formula
Monday, January 16, 2012 at 8:07pm by Steve

Pre Cal
this is wrong
Sunday, July 24, 2011 at 8:20pm by Dalidah

Pre Cal
40
Saturday, January 9, 2010 at 5:50pm by Anonymous

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
I agree
Saturday, May 8, 2010 at 12:23am by Reiny

Pre-Cal :)
You're very welcome!
Saturday, March 27, 2010 at 5:38pm by MathMate

Pre-Cal
Everywhere BUT 0
Thursday, March 25, 2010 at 10:22pm by Damon

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

Pre-Cal
(-2,1) and (2,1) are the vertices.
Saturday, May 2, 2009 at 7:37pm by Hal

Pre Cal.
correct!
Tuesday, April 21, 2009 at 3:12pm by Reiny

Pre Cal.
è is theta.
Tuesday, April 21, 2009 at 3:12pm by Jamie

pre cal--check
yes
Tuesday, March 31, 2009 at 8:27pm by Reiny

Pre Cal.
correct.
Tuesday, March 31, 2009 at 9:28am by bobpursley

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