Friday

August 28, 2015
Number of results: 25,816

**Finite Math**

Fifty percent of students enrolled in calculus class have previously taken pre-calculus. Thirty percent of these students received an A for the calculus class, whereas twenty percent of the other students received an A for calculus. Find the probability that a student selected...
*June 10, 2015 by Nikole*

**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**

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*

**Probability (Pre-Calculus)**

A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer: (a) all five questions on the exam. (b) exactly eight ...
*March 25, 2010 by Hailey*

**pre algebra answer check**

The probability that you will win a contest is 76%. What is the probability that you will lose the contest? 24%
*May 30, 2012 by amy*

**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-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 calculus**

A bag contains 4 blue marbles, 2 black marbles, and 3 red marbles. If a marble is randomly drawn from the bag, what is probability that it is not black? 1/2 2/9 5/9 7/9 14/19
*November 27, 2012 by king chris*

**Pre-Algebra**

Hi, Well, I have a test tomorrow and I was hoping thats someone could maybe help me? I don't understand probability... Here's a question I don't understand: Find the probability of tossing three coins and getting only two tails. Can anyone help?
*May 23, 2008 by Lily*

**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-Calculus**

Consider a class with 10 sophomores, 8 juniors, and 6 seniors. Two students are selected at random. 1) What is the probability of selecting 1 junior and 1 senior. 2) Find the odds of selecting two students who are not seniors. How do I set these up to solve?? Any help is ...
*September 14, 2008 by Lucy*

**Calculus**

3 numbers x y and z are to bea randomly chosen between 0 and 1. A What is the probability that X + y + z will be less than 1? B What is the probability that both x+ y<1 and 1<x+a Try your best and... Thanks alot!
*July 21, 2011 by jane*

**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, Probability**

From a deck of 52 playing cards, 7 cards are dealt. What are the odds of the following event occuring --4 From one suit, 3 from another The probability of the event occurring is also acceptable. But, the answer is 99/16722971 (as far as the odds go
*July 20, 2012 by Jay*

**statistics**

In 1980 (before the era of in-vitro fertilization), there were 3,612,258 births in the United States (according to the U.S. Census Bureau), of which 68,339 births were to twins and 1,337 births were to triplets or more. What was the probability of having multiples (twins or ...
*June 19, 2013 by f*

**Pre-Calculus-check answers**

How many ways can 5 students be chosen from a group of 4 juniors and 6 seniors to be on the prom committee if exactly 3 students must be seniors? Answer: 5400 Find the probability of getting a sum of 5 on the first toss of two number cubes and a sum of 6 on the second toss. ...
*October 11, 2008 by Lucy*

**statistics**

Given the ensuing well drilling data, answer the following. .30 (30%) probability of a productive well absent test information Pre-drilling ballistics test s affirmative result correctly predicts a productive well .70 of the time Pre-drilling ballistics tests negative ...
*October 25, 2007 by sophia*

**statistics**

The below table shows the probabilities generated by rolling one die 50 times and noting the up face. What is the probability of getting an odd up face? roll 1 Probability 0.22 roll2 probability 0.10 roll 3 probability 0.18 roll 4 probability 0.12 roll 5 probability 0.18 roll ...
*May 3, 2012 by sc*

**math probability**

this is a probability question... Suppose you are asked to choose a whole number between 1 and 13 inclusive. (a) what is the probability that it is odd?...7/13 (b) What is the probability that it is even?...6/13 (c) what is the probability that it is a multiple of 3?...4/13 (d...
*December 18, 2008 by joe*

**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-calc**

The probability, P, in percent, that a person will respond to a certain ad can be modelled by the equation P(n)=1-2^(-0.05n), where n is the number of days since the ad began on tv. After how many days is the probability greater than 20%? my work: 0.20=1-2^(-0.05n) then i ...
*May 19, 2009 by Jus*

**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 - CALCULUS**

Let B = [-1 3 6 -3]. Find -4B. A. [-4 12 24 -12] B. [-3 1 4 -5] C. [4 -12 -24 12] D. [4 3 6 -3] b ?
*April 11, 2015 by Ciara*

**Pre-Algebra (Probability)**

The theoretical probability of spinning an even number on a spinner is 2 3 . The spinner has 8 even-numbered sections. How many sections are on the spinner?
*May 7, 2015 by Pyrenees*

**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 alegabra **

There are 14 nickels, 10 dimes, 6 quarters, and 22 pennies, what's the probability I will pick a dime from the jar?
*June 3, 2014 by Adrianna*

**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*

**Pre-Calculus/Trigonometry**

for f(x)= 1/(x^2-3), find: a. f(3) b.f(2+h)
*September 30, 2014 by Anonymous*

**Pre-Calculus/Trigonometry**

For f(x)= 1/(x-5) and g(x)= x^2+2, find: a. (f o g)(x) b. (g o f)(6)
*September 30, 2014 by Anonymous*

**pre-calculus**

6cos^2(x)-5cos(x)-6
*December 4, 2014 by Ashleigh*

**college pre-calculus**

if 1-1/x=2-2/x, then 3-3/x=? A. -3 B. -1/3 C. 0 D. 1/3 E. 3 idek how to do it?
*January 11, 2015 by Derek*

**Pre-Calculus**

find the inverse of g(x)=(x+7)^3+4
*February 3, 2015 by Drue*

**pre- calculus**

how do you find the root(s) of the equation x^2+3x-4=0
*October 13, 2007 by Anonymous*

**Pre-calculus**

Describe the end behavior of f(x)=2x^4-5x+1.
*August 23, 2008 by Lucy*

**Pre Calculus**

log(log10^10,000)
*July 25, 2009 by Shellie*

**pre-calculus**

Solve this Function: (3x-7)^2 (x^2-9x+18) ---------------------- x (x^2-12x+40) (x^16)
*April 26, 2010 by Treema*

**pre calculus**

How do you simplify cos ((pi)/2) - feta?
*May 10, 2010 by gisele*

**pre calculus**

f(x)= a+tan(bx) fina a and b f(0)= 5 f(pi/8)=1/sq root of 3 +5
*November 14, 2010 by Caitlyn*

**Pre-Calculus**

For what values of x is it true that |sin(x)-x| < 0.01?
*January 17, 2011 by Sara*

**pre calculus**

cube roots of 64i?
*May 20, 2011 by joe*

**Pre Calculus**

Logarithms Solve the equation for x 1-ln(3x+2)=0
*October 21, 2011 by Josh*

**PRE CALCULUS**

8-12SIN^2X=4COS^2X SOLVE FOR X
*December 12, 2011 by NN*

**pre-calculus**

use gauss-jordan x+2y=5 2x+y=-2
*March 28, 2012 by Anonymous*

**Pre-Calculus**

Find the inverse of matrix A. .6 -2 A= 6 -18
*May 24, 2012 by Sangita*

**pre calculus**

How do you solve c + 70 + 12c = 196 - 5c
*September 19, 2012 by elise*

**Pre-Calculus**

Is the difference of quotient of f(x) = -3x -x equal to -3h - 6x - 1?
*September 22, 2012 by Peter*

**pre-calculus**

solve the equation (5/2)^2=(125/8) x=
*October 6, 2012 by ladybug*

**pre-calculus**

solve the equation 5^5x+1=125
*October 6, 2012 by ladybug*

**pre-calculus**

find the functions f and g so that Fog = H. H(x)=/2x+1\
*October 9, 2012 by ladybug*

**Pre calculus **

Tanx + sinxsecx/ cscxtanx
*February 10, 2013 by Kristen *

**Pre-Calculus**

Find the value of the parameter: x = 3t y = t^2 + 5 t = 2
*October 20, 2013 by Joy*

**Pre-Calculus**

Solve sin (pi/4(x-6))=0.5, 0<x<360
*January 11, 2014 by Hanu*

**Pre-Calculus**

Write Parametric equations of -3x+1/2y=2
*February 28, 2014 by Alexis*

**Pre-Calculus**

Find N if log base 6 (6^7.8)=N
*March 2, 2014 by Aly*

**pre calculus**

solve nonlinear inequality x^4 > x^2
*March 3, 2014 by Danielle*

**Pre-Calculus**

Write Parametric equations of -3x+1/2y=2
*March 3, 2014 by Alexis*

**Pre Calculus**

e^-x sqrt(3e^2x -5/4) = e^x No idea how to approach this.
*October 1, 2014 by Anonymous*