Monday

October 20, 2014

October 20, 2014

Number of results: 19,259

**Pre- Calculus**

Evaluate the trig function tan33degress
*February 23, 2012 by Steve*

**pre calculus 2**

use the fundamental trig. Identities to simplify tan^4x+2tan^2x+1
*July 24, 2011 by denise *

**Pre-Calculus/Calculus**

I am too embarassed to ask this Calculus (really pre-calculus) question in tutoring, because I know I should know. Is the inverse of f(x)=3x-1 actually f(x)=1/3x+1? How do I find it? What if it asks the same equation replaced with f to the -1 power (x)? I think I know how the ...
*July 1, 2008 by Molly*

**Pre-calculus**

find the trig functions of angle x if the terminal side of x passes through the point (-12, 5).
*August 7, 2011 by Lala Kennedy*

**Pre-Calculus/Trig...**

Help Please For the function defined by: f(x)= (x^2,x≤1) (2x+1,x>1) Define f(0). and also how would i graph f(x)?
*October 1, 2014 by Anonymous*

**Pre Calculus/Trig**

find the area of a circle inscribed in triangle ABC where a=9, b=13, and the measure of angle C=38 degrees
*October 11, 2007 by Nick*

**Pre Calculus**

Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)
*November 15, 2009 by Pre Calculus*

**Pre-Calculus**

I am in Honors Pre-Calculus and am having a hard time understanding my teacher. I feel so stupid. Does anyone have any suggestions on a website that might give me some insight into what I am doing wrong? Thanks!
*October 7, 2008 by Jill*

**Pre-Calculus-Trig**

A road rises 140 feet per horizontal mile. What angle does the road make with the horizontal?
*January 30, 2011 by Chloe Mack*

**Pre-Calculus-Trig**

A 40 foot high flagpole sits on the side of a hill. The hillside makes a 17 degree angle with horizontal. How long is a wire that runs from the top of the pole to a point 72 feet downhill from the base of the pole?
*January 30, 2011 by Chloe Mack*

**Pre-Calculus-Trig**

A pilot in a plane at an altitude of 22,000 feet observes that the angle of depression to a nearby airport is 26 degrees. How many miles is the airport from a point on the ground directly below the plane?
*January 30, 2011 by Chloe Mack*

**Pre-Calculus-Trig**

A surveyor stakes out points A and B on sides of a building. Point C on the side of the building is 300 feet from A and 440 feet from B. Angle ACB measures 38 degrees. What is the distance from A to B?
*January 30, 2011 by Chloe Mack*

**Pre-Calculus-Trig**

A lighthouse keeper 100 feet above the water sees a boat sailing in a straight line directly toward her. As watches, the angle of depression to the boat changes from 25 degrees to 40. How far has the boat traveled during this time?
*January 30, 2011 by Chloe Mack*

**Trig/Pre-Calc**

Need help with current Trig problem for tomorrow: Solve the logarithmic equation algebraically. Approximate the result to three decimal places. 6log3(0.5x)=11 I know to start off the equation you divide by 6. I know the answer is 14.988. I just am puzzled on how to receive the...
*May 16, 2011 by Eric*

**Pre-Calculus-Trig**

Two trains depart simultaneously from the same station. The angle between the two tracks on which they leave is 120 degrees. One train travels at an average speed of 45 mph and the other at 70 mph. How far apart are the trains after three hours?
*January 30, 2011 by Chloe Mack*

**Pre-Calc/Trig...**

If f(x)=1/(x+2), what is f(3+h)? A. 1/(3+h) B. 1/(h+5) C. 1/(x+2)(3+h) D. (3+h)(x+2)
*October 3, 2014 by Anonymous*

**Pre-Calculus-Trig**

A pole tilts 12 degrees from the vertical, away from the sun, casts a 34 foot long shadow on level ground. The angle of elevation from the end of the shadow to the top of the pole is 64 degrees. How long is the pole?
*January 30, 2011 by Chloe Mack*

**pre-calc/ trig**

Sinx=0
*October 15, 2013 by Amy*

**Pre-Calc/Trig...**

Assume f(x) = -2x + 8 and g(x) = 3x. What is the value of (f + g)(-1)?
*October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

vertex form:y-4=-(x-4)^2
*October 6, 2014 by Anonymous*

**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*

**Pre-Calc/Trig**

Help Please Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9
*September 28, 2014 by Anonymous*

**Pre-Calc/Trig...**

Solve using any method. 1. 2x^2+5x-3=0 2. -x^2+x+1=0
*October 15, 2014 by Anonymous*

**pre-ap pre calculus **

To solve an equation by finding x-intercepts, Cynthia graphed the function y=x^3-5x+|2x-3| Give several possibilities for the original equation. How do I do it and what's the answer? Thanks
*September 8, 2009 by Anonymous*

**Pre Calc , Math**

Find the 6 Trig ratios of -7Pie/3
*January 2, 2011 by Joe Daddy*

**Pre-Calculus-Trig**

A boat travels for 8 kilometers in a straight line from the dock. It is then sighted from a lighthouse which is 6.5 kilometers from the dock. The angle determined by the dock, the lighthouse(vertex), and the boat is 25 degrees. How far is the boat from the lighthouse?
*January 30, 2011 by Chloe Mack*

**Pre-calc, Algebra, Trig**

(2x squared-3x +1)(4)(3x+2)cubed (3)+(3x +2)raised to the 4 (4x-3) Simplify
*January 20, 2009 by Josiah*

**Pre-Calc/Trig...**

Use the discriminant to determine the nature of the roots. 1. 2x^2+5x-3=0 2. -x^2+x+1=0
*October 15, 2014 by Anonymous*

**Pre Calculus 12**

Im going over my pre calculus 12 exam, and I need help with one question from the chapter Transformations of graphs and stuff. Combining Transformations 2y = f(5x-10)+8 The original points are (4,6) and the new points I got by translating it and stuff are : (14/5,20) But in ...
*January 22, 2013 by Shreya*

**pre cal\trig**

Find the following cot(Arccsc 25/24) show your work
*May 26, 2011 by Cheryl*

**Pre-calc/Trig...**

which of the following are quadratic functions? check all that apply 1. y=2x^2-3x+7 2. y=3x-4 3. y=(5x-3x^2)/4+1 4. y=x-x^3
*October 8, 2014 by Anonymous*

**Pre-Calculus-Trig**

A straight road slopes at an angle of 10 degrees with the horizontal. When the angle of elevation of the sun (from horizontal) is 62.5 degrees, a telephone pole at the side of the road casts a 15 foot shadow downhill, parallel to the road. How high is the telephone pole?
*January 30, 2011 by Chloe Mack*

**Pre-Calc/Trig...**

am i correct? What is the axis of symmetry for the graph of y=2x^2-4x+2? x=? the line goes through 1? x=1
*October 14, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Solve the equation: (x-3)(x+2)=0 Enter the solution with the lowest value.
*October 16, 2014 by Anonymous*

**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-Cal: Trig**

The point (7,2) determines a poistion angle "t". Find the exact value of sin(t).
*January 23, 2011 by Alex*

**Pre-Cal: Trig**

The point (7,2) determines a position angle "t". Find the exact value of sin(t).
*January 23, 2011 by Alex*

**Pre-Calc/Trig**

Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5
*September 28, 2014 by Anonymous*

**Pre-Calc/Trig...**

Am i correct? A vertical shift is an example of a non-rigid transformation. True
*October 14, 2014 by Anonymous*

**Pre-Calculus/Trig Check please and help**

Could someone please check the first one and help me with the second one. I'm stuck-Thank you 1.What are theroots of the following polynomial equation? (x+2i)(x-5)(x-2i)(x+8) = 0 I think the roots are -2i,5,2i,-8-you take out the roots as opposites of what are in the equaion ...
*September 5, 2011 by Tabitha*

**Pre Calc Trig**

Verify the following: tan( a + p/2) = -cot a a= alpha and p= pie since I do not have that button.
*March 29, 2011 by Brittany*

**Pre-Calc/Trig...**

Which of the following quadratic functions has a graph that opens downwards? check all that apply A. y=2x^2-9x+3 B. y=x^2+4x+8 C. y=-(5+2x^2) D. y=60x-15x^2
*October 9, 2014 by Anonymous*

**Pre-Calculus-Trig**

Two surveyors, Joe and Alice, are 240 meters apart on a riverbank. Each sights a flagpole on the opposite bank. The angle from the pole to Joe (vertex) to Alice is 63 degrees. The angle from the pole to Alice(vertex)to Joe is 54 degrees. How far are Joe and Alice from the pole?
*January 30, 2011 by Chloe Mack*

**Pre-Calc/Trig..**

Write a function for the graph described as a transformation of y=x^2 y=x^2 experiences a vertical stretch of factor 2 and then a shift right of 3 units.
*October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=x^2+7
*October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

Explain how the graph of the given function is a transformation of the graph of y=x^2 *y=(x+5)^2
*October 7, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me please. Simplify 1. √-36 2. -√-625
*October 17, 2014 by Anonymous*

**Pre- cal Trig **

2cos^2x=cosx. Can you subtract the cos from cos^2? Or what would i have to do?
*December 2, 2010 by Jessica *

**Pre-Calc/Trig...**

Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29
*October 3, 2014 by Anonymous*

**Pre-Calc/Trig...**

Help me do this please. Simplify the expressions using imaginary numbers. 1. √-16 2. √-49
*October 15, 2014 by Anonymous*

**Pre-Calc/Trig...**

if h(x)=(fog)(x) and h(x)=3√x+3 find g(x) if f(x)= 3√x+2
*October 4, 2014 by Anonymous*

**pre calc**

A math teacher uses four algebra books, two geometry books, and three pre-calculus books for reference. In how many ways can the teacher arrange the books on the shelf if books coiver the same subject matter are kept together?
*September 25, 2011 by Katie*

**pre-calculus**

3(4^x)-2^(x+2) = -1
*May 14, 2008 by Mike*

**pre calculus**

27^8x-3=(1/81)^8x-4 x=?
*December 5, 2008 by Anonymous*

**pre calculus**

2n^1/3(n^2/3+n^-1/3)
*November 23, 2010 by sam*

**pre-calculus**

what is the F-^1 of 6/x+4
*May 22, 2011 by kelly*

**pre calculus**

(m+3)+5
*July 9, 2011 by Anonymous*

**pre calculus**

-2< x < 5 - -
*August 8, 2011 by Carus II*

**Pre-calculus**

2^(x)/(1-2^(x))=3
*December 12, 2011 by Ivan*

**pre-calculus**

(2^(4+pi))/ 2^(1+pi)
*January 29, 2013 by yukia*

**pre-calculus**

x^3e^x - 4e^x =0
*February 5, 2013 by suie*

**Pre-Calculus **

3x^2 + 8 = -4
*September 11, 2013 by Janae*

**pre calculus**

x^2-3/4x+1/8=0
*December 10, 2013 by Rose*

**pre calculus**

x^2-3x-7=0
*December 10, 2013 by Rose*

**pre calculus**

2k^2+5k-9=0
*December 10, 2013 by Rose*

**pre calculus**

2k^2+5k-9
*December 10, 2013 by Rose*

**Pre Calculus**

Formula: a = b = c
*December 7, 2006 by Clarice*

**Pre Calculus**

Formula: a = b = c
*December 7, 2006 by Clarice*

**Pre calculus**

gfk
*November 5, 2007 by Anonymous*

**Pre-Calculus**

How do I find xy^-2(xy^2 - 4y^4) ??
*January 5, 2010 by Taryn*

**Pre-Calculus**

How do you factor x^3 - 64?
*February 7, 2010 by Daisy*

**pre- calculus**

simplify 3x+2y/3y
*August 12, 2010 by Tara*

**pre calculus**

if y = bX, then its inverse is
*December 17, 2010 by john*

**pre calculus**

let f(x)= -x^2 - 1. evaluate f(x)at x=6, -6
*February 18, 2011 by henry baliz*

**pre calculus**

what is the vertices of 7x^2+5y^2=35
*March 7, 2011 by akim*

**pre calculus**

what is the vertices of (x+1)^2/4+(y+2)^2/25=1 ?
*March 7, 2011 by akim*

**Pre Calculus 1**

ln(3x-1) - ln(x+2) = 2ln5
*March 29, 2011 by Laura Grace*

**Pre Calculus 1**

lnx + ln(x+3) = 2
*March 29, 2011 by Laura Grace*

**pre-calculus**

What is the domain of (x+2)/(x-2)?
*February 15, 2012 by Tiffany*

**PRE CALCULUS HELP PLEASE**

((ln(x))^1/2)/(ln(x^1/2))=6
*March 3, 2013 by jim*

**pre calculus**

2x^2+11x-21=0
*December 10, 2013 by Rose*

**Pre-Cal (verifying trig identities)**

How would you verify the identity? sin^1/2x-cosx-sin^5/2xcosx=cos^3xradsinx
*February 12, 2009 by Crystal*

**math- pre calc/trig**

Find the length of each side of a square if the diagonal is 7(square root 2)? How do I solve or set up this problem?
*September 30, 2014 by jen*

**Pre-Calculus - Reiny**

Reiny you helped me with this logarithm yesterday: How did you write it out as log2 ( √A / B^3 ) Laws of logarithms combine, write as a single logarithm Need help on this question please, Im stuck, dont know where to go abouts from here: I did it on paint and uploaded it...
*October 17, 2012 by Shreya*

**pre calc**

express the followinf trig functions in terms of an acute angle. (a) cos 143 degrees (b) tan 192 degrees
*January 25, 2010 by kate*

**Pre-Calculus**

How do I find f(g(x)) when there is a radical?
*October 1, 2007 by Courtney*

**pre calculus**

x^2+y ^2+ 4x + 6y - 12 = 0 how do i find the domain?
*March 26, 2010 by mmm*

**pre calculus**

simplify sin(2 pi/3+x)
*November 18, 2010 by Eli*

**Pre-Calculus**

2secx= 3cscx
*March 31, 2011 by Erika*

**Pre-calculus**

x-2/x2-1 This equation is a function or not?
*June 27, 2011 by Keila*

**Pre Calculus**

FACTOR COMPLETELY 1) x^8-y^8
*September 13, 2011 by Libby*

**pre-calculus**

tan(1/2)cos^-1(9/10)
*April 22, 2012 by Kim*

**Pre-Calculus**

is f(x)=9x^(5/3) a power function?
*July 25, 2012 by Assad*

**pre calculus**

are you an online tutor
*September 16, 2012 by reese*

**Pre-Calculus**

Is the period of f(x) = 2cos(3x - ) 2/3?
*November 24, 2012 by Peter*

**Pre-calculus**

1) What is the equivalent of this? -5x(2x+7y)+7xy-4x(y+3)
*March 23, 2013 by Isis*

**Pre-Calculus**

How to find domain of: y = -3 + x+6
*September 3, 2013 by Dara*

**Pre-Calculus**

y= ((2-3x^(1/x))/(2+3x^(1/x)) Is the horizontal asymptote y= 1 or y= -1?
*December 18, 2013 by Ann*

**Math (pre calculus)**

ax+b/cx+d=2 solve for x
*February 20, 2014 by Danielle*

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