Tuesday

April 28, 2015

April 28, 2015

Number of results: 5,287

**Pre Cal (logs)**

I need help with these logs 1: Log underscore4 16X 2: 2 Ln ( X(sqr. root)e 3:5^[2logUnderscore5(3x)] 4:log underscore2 ^[1280-logunderscore2 5) I don't understand how to do them thanks
*March 30, 2008 by Deb*

**more pre cal logs**

sorry I am so lost I missed the class that talked about logs since my sister was in the hospital giving birth to a still born baby.... now I am all lost... Expand the log Ln 3sqrootx^2y/x+3 (the 3 is part of the sqroot not infront like the 3rd power) I hope that makes since
*March 31, 2008 by Deb*

**Math**

Logs are stacked up in apile as shown in the figure. The top row has 15 logs and the bottom row has 21 logs. How many logs are in the stack? a1= 1+14=15 an= 7+14=21 s1=(n/2)(a1+an) (n/2)(15+21) = 18 How do I figure out the n?
*May 4, 2010 by Abbey(Please help)*

**pre cal **

does anyone take pre-cal online ?
*April 16, 2012 by Mecie *

**another pre cal (logs)**

write as a single log log(underscore3)(3x-6)-[log(underscore3)(x^2-4)+log(underscore3)81] thanks
*March 31, 2008 by Deb*

**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
*April 21, 2011 by Ashley!!*

**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
*December 11, 2006 by rena*

**math - natural logs**

Find the EXACT solution to e^(1-x) = 4^x You must use logs, not just a calculator.
*October 31, 2011 by BJ*

**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 =)
*September 17, 2011 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 =)
*September 17, 2011 by Cristina*

**Precalculus**

.5=e^(-20t) I am assuming this involves logs but we did't really learn logs. Anyone care to walk me thru with a calculator. Have the Ti-83
*March 13, 2008 by Trevor*

**math logs**

solve 3^(2x+1) = 9^(2x-1) using base 3 logs
*November 12, 2011 by Sejul*

**Physics**

A 150 gram golden (specific heat 0.03 cal/gram^0 C) spoon at 20^0C is placed in a cup of tea at 100^0C. The amount of heat which the spoon absorbs from the tea which is necessary to reach spoon's tempature 47^0C is a)360.4 Cal b)121.5 Cal c)78.24 Cal d)15.08 Cal e)157.5 Cal
*March 5, 2015 by Vashti*

**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...
*September 26, 2011 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...
*September 26, 2011 by Allison*

**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
*November 10, 2011 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.
*November 22, 2009 by Danny*

**Maths (Logs)**

1.Write the following equation without logs log y = mx+ c This would be y = 10^(mx+c) right? 2. Explain why this fits the exponential model (in other words, it can be written in the form y = a x b^x where a and b are real numbers).
*April 7, 2008 by BP*

**Pre-Cal**

xy=2 {{x^2=3+y^2}}
*October 21, 2008 by Ash*

**Pre Cal**

1 --------- 2x^2-2 --------------- 2 + x ---- ------- x+11 x^2-2x-3
*January 29, 2010 by Lauren*

**pre cal**

3(2x-1)^2 (2) (x+3)^1/2 + (2x-1)^3 (1/2) (x+3)^-1/2
*February 13, 2013 by shenyce*

**Pre cal**

ix^2-2x+i=0
*March 17, 2013 by Anonymous*

**pre - cal**

12-5y^2 what's the question?
*August 20, 2007 by Anonymous*

**Pre-Cal**

What are bearings??
*February 5, 2008 by Daisy M.*

**pre cal**

what is the sum of e or 1n
*January 11, 2009 by ash*

**Pre Cal**

Solve for x 2^x=8^x-3
*December 22, 2009 by Raina*

**pre cal**

solve for x 8x-(2x-1)=3x-10
*February 1, 2010 by deonte*

**Pre Cal**

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

**pre cal**

(y^2)^-4y^8 simplify
*August 30, 2012 by jennifer*

**Pre-Cal.**

How does this go from x^2+ to 2i, explain.
*January 8, 2013 by phyllys*

**Pre-Cal**

tan-1=43\9.3
*May 1, 2013 by Anonymous*

**Pre-Cal **

2y=cos(4(t-6))+6
*April 22, 2014 by Anonymous*

**pre cal**

f(x) = 3x + 5, g(x) = 6x^2 Find (fg)(x)
*June 23, 2014 by Jorgeeee*

**chem**

"Yule logs are simulated wood logs make of compressed paper that burn with a red and green flame.How would you produce a similar yule log?"
*July 9, 2008 by jennifer*

**pre-cal**

find the value(s) of x for which f(x)=g(x). f(x)=x^4-2x^2,g(x)=2x^2
*August 28, 2007 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?
*September 20, 2008 by Crystal*

**pre cal**

What would cos2theta=-1/2 be???
*November 15, 2008 by becca*

**Pre-Cal**

Find f X g 3 sqrt of x+1 X x^3+1
*February 26, 2009 by Dan*

**Pre-Cal**

Simplify e^3ln2-1
*January 9, 2010 by jamie*

**pre-cal**

(576^1/2+512^1/3)^1/3
*May 31, 2010 by Soto*

**pre-cal**

tan((theta/2)+(pi/6))=-1
*July 2, 2011 by vince*

**Pre Cal**

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

**Pre Cal**

cos^2+tan^2=1
*March 25, 2012 by Trevion*

**Pre Cal**

cos 75 deg
*April 9, 2012 by Kara*

**pre cal**

7tan^2(pheta)-2=3
*June 28, 2012 by Maria*

**pre-cal**

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

**Pre Cal**

f(x) = log3(93 x + 3 815 x + 3)
*October 2, 2012 by Sally*

**pre-cal**

find the intercepts of y=2x-4
*October 13, 2012 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
*January 6, 2013 by phyllys*

**PRE-CAL**

SIMPLIFY 55/SQUARE ROOT OF 20 -3
*September 10, 2007 by JIM*

**pre cal**

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

**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)-->-
*March 17, 2009 by Mia*

**Pre-Cal**

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

**Pre-Cal**

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

**Pre-Cal**

Identify any asymptotes of the graph. y = 1.08^5x
*March 21, 2010 by Mark*

**Pre-Cal**

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

**Pre-Cal**

what about the domain of 1/x. Would it be 0?
*March 25, 2010 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
*May 5, 2010 by jenny*

**Pre-Cal**

Find the domain for the function f(x)=-2x^(2)-x^(2)-6x-27
*December 11, 2010 by Terri*

**pre-cal**

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

**pre cal**

[root2(cos2pi/11+isin2pi/11)]^4
*May 20, 2011 by joe*

**Pre Cal**

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

**pre cal 2 **

solve the equation 4cos^2x-1=0
*July 24, 2011 by kc*

**Pre Cal**

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

**pre-cal**

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

**Pre-Cal**

find the value of the function k(p/q)
*December 16, 2011 by Joe*

**Pre-cal**

Does the equation x^2+x-12/x+2 have holes?
*March 21, 2012 by Monique*

**Pre-cal**

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

**Pre cal**

Sec^2x=2 With 10 different answers
*June 29, 2012 by Terri*

**pre-cal**

solve the equation algebraically. 7e^x=11-e^-x
*October 9, 2012 by ladybug*

**pre-cal**

Find the real zeros of f (x)= 2x^3 + 2x^3 8x + 3
*October 11, 2012 by ladybug*

**pre-cal**

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

**pre-cal**

find the distance d (P1 P2) between the P1 and P2 P1=(-1,1);P2=(1,2)
*October 12, 2012 by ladybug*

**Pre Cal**

What is the phase shift of F(x) = 3 sin (2x - 2)?
*November 15, 2012 by Candace*

**Pre-cal**

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

**Pre-Cal.**

write f(x) in factored form.
*January 5, 2013 by phyllys*

**pre cal **

Solve G(x) for the given domain. G(x) = 3x 2 - 2x - 1 G(6) =
*June 19, 2013 by tanya*

**pre cal**

Find the inverse of the function. f(x) = x3 + 8
*June 23, 2014 by Jorgeeee*

**pre-cal**

How do you work inverse functions alebraically?
*September 20, 2007 by chris*

**Pre-Cal**

FIND A POWER WHOSE SUM IS: (a) 5 / (1-3x) (b) 9 / (1-4x) (c) 6 / (2-4x)
*April 3, 2009 by Bob*

**pre-cal**

what are the steps to solve sec y sin (pi/2-y)=1
*January 12, 2010 by Lori*

**Pre-Cal**

how do we put x^2-2y^2=4 into a standard equation???
*April 8, 2010 by Soto*

**Pre cal **

Find the area of a triangle with sides of 12, 14 and 20
*December 7, 2010 by Keiven*

**pre cal**

convert the point to polar coordinates: (12,-12)
*May 20, 2011 by joe*

**pre cal**

convert the point to rectangular coordinates (7,1.75)
*May 20, 2011 by joe*

**Pre Cal**

simplify the expression 2sin^2 t + cos^2 t-2
*July 24, 2011 by Angela*

**Pre-Cal**

Find the distance d(P1,P2) between the points P1 and P2. P1= (-2,1); P2= (0,0) P1= (-1,1); P2= (2,2) P1= (-1,0); P2= (2,4) P1= (2,-3); P2= (4,2)
*January 8, 2012 by nelly*

**Pre-Cal**

Find the distance from point (-1, 3) to the line 5x- 4y= 10.
*March 21, 2012 by Adrianna*

**Pre-Cal**

Find the domain of the function. sqrt of x^2-9
*September 12, 2012 by Philip*

**pre-cal**

find the intercepts. y=2x-2 show work
*December 9, 2012 by anonymous*

**Pre-Cal.**

find all the zeros of f(x)=x3-3x2+4x-12
*January 5, 2013 by phyllys*

**Pre-Cal**

convert = -2 to rectangular equation form
*May 27, 2013 by Anonymous*

**pre cal**

f(x)=2x^2+12x-6 what is the min or max value ?
*January 30, 2014 by Holly *

**pre cal**

Sin3x=3cos^2xsinx-sin^3x
*February 12, 2014 by Noemi*

**pre cal**

Choose the point on the terminal side of -45
*June 23, 2014 by alex*

**pre cal **

what are the real and imaginary zeros of the equation 2x^3 + 5x^2 - 3x + 7
*June 23, 2014 by alex*

**pre-cal**

show solution solve. 2sin^(2)x=2+cosx
*December 19, 2008 by al*

**Pre-Cal**

Find a power series whose sum is: (a) 5 / (1-3x) (b) 9 / (1-4x) (c) 6 / (2-4x)
*April 5, 2009 by John*

**pre cal**

how do you determine the domain of the variable in the expression x-6 over 5-x?
*February 8, 2010 by becky*

**Pre-Cal**

what are the angles on the unit circle for the function tan x = -1?
*February 17, 2010 by Hannah*