Friday

April 18, 2014

April 18, 2014

Number of results: 44,322

**Pre Calculus**

Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)
*Sunday, November 15, 2009 at 10:07pm by Pre Calculus*

**Pre-calculus**

Looks like calculus not pre-calculus to me by the way. I do not see how to do it without taking the derivative.
*Tuesday, November 27, 2012 at 6:01pm by Damon*

**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 ...
*Tuesday, July 1, 2008 at 10:38pm by Molly*

**Pre-Calculus**

yeah part exams library go there Pre-Calculus exam
*Thursday, October 29, 2009 at 7:46pm by stephanie*

**PRE-CALCULUS**

THIS IS FOR ALGEBRA/PRE-CALCULUS MATH. I POSTED IT JUST AS THE TEACHER WROTE IT.
*Tuesday, September 13, 2011 at 10:41pm by aLVIN*

**Pre-Calculus**

No. You need to find the OR probability, a little tricker. And remember two queens are red... I cant do it better than this. Study it. http://en.allexperts.com/q/Basic-Math-657/Probability-5.htm
*Wednesday, September 17, 2008 at 7:49pm by bobpursley*

**pre calculus**

You need to write out the question. I have no idea what "pre calculus" this could be, maybe zeroes, however, that is standard fare for an algebra course.
*Tuesday, December 10, 2013 at 6:26pm by bobpursley*

**pre calculus**

You need to write out the question. I have no idea what "pre calculus" this could be, maybe zeroes, however, that is standard fare for an algebra course.
*Tuesday, December 10, 2013 at 6:26pm by bobpursley*

**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!
*Tuesday, October 7, 2008 at 4:23pm by Jill*

**pre-calculus**

pre-calculus and i didn't understand where the d and cos came from
*Thursday, September 29, 2011 at 10:44pm by tatiana*

**pre calculus**

Pre-Calculus? I wonder what the question is. In a basic algebra course, you would be looking for zeroes, and probably get those by factoring. 2x^2+11x-21=0 (2x-3)(x+7)=0 x= 1.5, or x=-7
*Tuesday, December 10, 2013 at 12:39pm by bobpursley*

**math**

Are you doing pre-calculus or calculus? In calculus, the maximum is obtained by setting f'(t)=derivative with respect to t = 0 and solving for t. In pre-calculus, you can transform the expression by completing the squares. Ax² + Bx + C =A(x²+ (B/A)x + C/A) =A((x + (B...
*Tuesday, September 8, 2009 at 10:22pm by MathMate*

**Pre-Calculus**

Pre-Calculus? That is a nasty equation. We might use Newton's Method, but that would be Calculus. I tried some "trial and erro" and got x = appr .371 using 2 decimals 4 sin .37 = 1.44646 e^.37 = 1.4477 I am curious what method was suggested that you should use.
*Friday, March 29, 2013 at 10:30pm by Reiny*

**Math: Pre-calculus**

P=2(W+L) A=WL, so L = 180/W so, P = 2(W+180/W) This is pre-cal, so you don't have calculus at your disposal. But, you do know that a square has maximum area for a given perimeter. So, W = L = √180 = 6√5
*Sunday, October 6, 2013 at 5:35pm by Steve*

**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%
*Wednesday, May 30, 2012 at 2:54pm by amy*

**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 ...
*Thursday, March 25, 2010 at 8:11pm by Hailey*

**pre calc**

A pre-calculus answer is -0.64 + kπ radians, where k∈ℤ.
*Monday, January 25, 2010 at 8:11pm by MathMate*

**Calculus grade 12 exam review PLEASE HELP ASAP !!**

THANK U! to be honest i really hate calculus and i didnt really pay attention in the course. im going into kin (of arts) so its a pre-req but i wont be taking any math or calc courses in university, i dont know why its a pre req then. but thanks u so much
*Thursday, June 21, 2012 at 3:52pm by Sarah Berkley Adamson*

**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?
*Friday, May 23, 2008 at 12:28am by Lily*

**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
*Tuesday, November 27, 2012 at 10:09am by king chris*

**Calculus(Pre)**

Can you explain linear speen and angular speed
*Wednesday, November 16, 2011 at 7:33pm by Professor Calculus*

**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 ...
*Sunday, September 14, 2008 at 3:45pm by Lucy*

**math-calculus**

btw this is actually pre-calculus publisher is absolute value publications
*Tuesday, January 17, 2012 at 11:28pm by Shreya*

**Probability**

I will let a = 1/175,711,536= 5.591145*10^-9 , to save typing. The expected number, among 200,000,000, is L = 2*10^8 a = 1.13823 The probability of P(k) of k winners is given by Poisson statistics: P(k) = L^k*e^-L/k! Probability of 0 winners = 0.32039 Probability of 1 winner...
*Tuesday, March 18, 2008 at 4:38am by drwls*

**pre calculus**

Multiply 1.2 rev/s by 2 pi radians/revolution. The radius does not matter. Learn to spell calculus
*Thursday, December 3, 2009 at 11:50am by drwls*

**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!
*Thursday, July 21, 2011 at 5:10pm by jane*

**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
*Tuesday, September 8, 2009 at 2:14pm by Anonymous*

**statistics/probability**

1. The probability that a student passes mathematics is 2/3 and the probability that he passes biology is 4/9. If the probability of passing one course is 4/5, what is the probability that he will pass both courses?
*Saturday, October 23, 2010 at 5:30pm by Anonymous*

**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
*Friday, July 20, 2012 at 1:32am by Jay*

**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-Calculus**

the total students are 24. Probability of 1junior and 1 senior are.. Pr=(8/24)(6/23) The second: Pr=(18/24)(17/23) Notice in each, the numerator is the number of possible ways to be successful,the denominator is the number of ways it can go.
*Sunday, September 14, 2008 at 3:45pm by bobpursley*

**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 test’s negative ...
*Thursday, October 25, 2007 at 8:10pm by sophia*

**Pre-Algebra**

it's called the Theoretical Probability... Can anyone help???
*Friday, May 23, 2008 at 12:28am by Lily*

**pre calc**

This is a long, long way from pre-calculus. 2,4 is in quadrant I when on any axis, it is not in a quadrant. In the case of 0,3 it is on the border between quadrants I,and II.
*Thursday, September 10, 2009 at 5:40pm by bobpursley*

**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
*Monday, October 3, 2011 at 7:49pm by Leah*

**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 ...
*Thursday, May 3, 2012 at 8:05pm by sc*

**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 ...
*Wednesday, June 19, 2013 at 9:18am by f*

**Pre-calc**

Pre calculus? This is stock Algebra II. put the equations in the form of ax^2+bx+c=0 then factor. for instance, c is already in that form. 2x^2+x-6=0 (2x-3)(x+2)=0 x= 3/2 x=-2 do the others the same method.
*Monday, January 25, 2010 at 5:18pm by bobpursley*

**Pre-Calculus/Calculus**

okay, thanks!
*Tuesday, July 1, 2008 at 10:38pm by Molly*

**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. ...
*Saturday, October 11, 2008 at 2:03pm by Lucy*

**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...
*Thursday, December 18, 2008 at 12:22am by joe*

**math,pre statistics**

Two dice are rolled. What is the probability that it is not doubles?
*Friday, February 6, 2009 at 8:58am by Regina*

**Math**

In an experiment, the probability of the event E is known to be .4. Also the probability of the event F is .8,and the probability of E∪F is 1. i) Compute the probability of these events: P(E∩F)= P(E-F)= ii) Suppose the experiment is run twice in succession. What ...
*Thursday, April 21, 2011 at 6:55pm by Tracy*

**PRE CAL. JOURNAL**

You can calculate the different combinations to get different colours, but you can also calculate the probability P of getting the same colours, and the required probability is 1-P. get two reds: (3/6)*(2/5)=1/5 get two blues: (2/6)*(1/6)=1/18 Probability of getting two reds ...
*Monday, March 15, 2010 at 7:37pm by MathMate*

**Calculus(Pre)**

What is linear speed and angular speed (In Trignometry)
*Thursday, November 17, 2011 at 4:43pm by Professor Calculus*

**statistics**

if n units are independent and the probability of each being up is 2/3 then the probability of all n being up is (2/3)^n HOWEVER I can not see your flow chart and therefore can not evaluate parallel paths if there are two ways to get from A to B and the probability of failure ...
*Monday, February 17, 2014 at 8:34pm by Damon*

**calculus**

The probability 1 in 4,000,000 will result in an acident. over a life time an average driver takes 50,000 trips. what is the probability of an accident over a lifetime
*Monday, September 8, 2008 at 11:45pm by Tony*

**Calculus**

What is the probability that it will land on green the first roll (2/6) Now the second roll is independent of the first. We did not cross out the green region or anything. We take a fresh roll with the same conditions as the first roll. So the probability of a yellow on the ...
*Monday, December 10, 2007 at 5:27pm by Damon*

**Finite Math**

An urn contains sixteen red balls and seventeen white balls. A sample of three balls is selected at random and the number of red balls observed. Determine the probability distribution for this experiment: Number of Red Balls/Probability 0...Probability=? 1...Probability=? 2......
*Thursday, April 5, 2012 at 12:28am by Amanda*

**Pre-Calculus**

well, shoot. Then just subtract 8 from both sides to get 3x^2 = -12 x^2 = -4 there is no real solution, since x^2 is never negative for real x. If you allow complex solutions, then x = 2i or -2i. I believe this is from Algebra I, and should not be posing a difficulty for ...
*Wednesday, September 11, 2013 at 4:58pm by Steve*

**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 ...
*Tuesday, January 22, 2013 at 8:18pm by Shreya*

**math-probability**

The Probability that Jodi makes a basket when playing basketball is .50, Jamal’s probability is .80 and Pat’s is .75. What is the probability that all three make a basket?
*Monday, November 30, 2009 at 6:55pm by GG*

**Math Probability **

If the probability that event A will happen is 1/4 and the probability of A not happening is 3/4, find the probability that event A happens 3 times out of 7 experiments
*Monday, April 16, 2012 at 2:03pm by Antonio*

**pre calculus**

P=2W+2L L=1.5W 480=2W+2(1.5W) solve for W, then go back and solve for L This is Pre-Cal?
*Wednesday, January 7, 2009 at 8:27pm by bobpursley*

**algebra 2**

What you are being asked is what is the probability of getting 3 and 5 or two 4s on the next roll. On the second problem, the probability of getting a 3 is 1/6 and "anything else" is 1. With the information below, you should be able to calculate the probability of a pair of 3s...
*Tuesday, March 10, 2009 at 9:40am by PsyDAG*

**Algebra 2**

In Kentucky, where i am from, we do algebra and algebra two before pre-cal and calculus. I didnt realize that the problem could be solved in multiple ways and i apologise. But the solution should be done without calculus.
*Thursday, February 24, 2011 at 10:33pm by Anon*

**Math**

The probability of a head on each toss = .5 or 1/2. The probability of getting a 4 is 1/6. The probability of all the events occurring is found by multiplying the probability of the individual events — 2 coin tosses and one roll of the die. I hope this helps. Thanks for asking.
*Wednesday, June 17, 2009 at 8:33pm by PsyDAG*

**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 ...
*Tuesday, May 19, 2009 at 3:43pm by Jus*

**math, pre-statistics**

Two dice are rolled. What is the probability that result is not doubles?(Round to the nearest thousandth)
*Friday, February 6, 2009 at 8:25pm by Sabrina*

**probability**

ok but how do i find the final probability? i see how i can get the probability of a certain combination, but i don't understand how i can find that end probability.
*Sunday, February 28, 2010 at 1:55pm by Ryan!*

**Probability Math **

Event A has probability of 0.2 and event B has probability of 0.3. If they are independent, what is the probability that both of them happen? I can't remember how to do this one.
*Sunday, September 29, 2013 at 4:48am by Alex*

**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?
*Sunday, September 25, 2011 at 5:39pm by Katie*

**math**

However, the probability of getting 5 (or any other number 1-6) on a die is 1/6. The either-or probability is found by adding the probability of individual events. The sum of both dice = 5 can be obtained by 1, 4 4, 1 2, 3 or 3, 2 The probability of getting any one of these ...
*Saturday, April 25, 2009 at 9:28pm by PsyDAG*

**Pre-Calculus**

The "dx" at the end makes me think you are supposed to integrate [e^-x / e^-1] + 3 . But that would make it a calculus, not a precalculus, question. It is not clear what the question is. In any case, e^-x / e^-1 = e^(1-x) The integral of e^(1-x) + 3 dx is -e^(1-x) + 3x + C
*Sunday, November 20, 2011 at 5:39am by drwls*

**Pre-Calculus**

welcome
*Tuesday, January 22, 2013 at 10:29pm by Reiny*

**Pre-Calculus**

yes
*Sunday, April 6, 2008 at 10:52pm by Reiny*

**pre-calculus**

3(4^x)-2^(x+2) = -1
*Wednesday, May 14, 2008 at 9:55pm by Mike*

**Pre Calculus**

thank u
*Monday, October 6, 2008 at 9:07pm by Crystal*

**Pre Calculus**

Thank you
*Saturday, October 18, 2008 at 11:51pm by Lia*

**pre calculus**

YES!!!
*Wednesday, January 7, 2009 at 8:27pm by nichole*

**Pre-calculus**

Thanks
*Tuesday, January 20, 2009 at 11:12am by Liz*

**Pre-calculus**

Thanks
*Wednesday, January 28, 2009 at 11:13am by Mary*

**Pre Calculus**

Thanks...
*Sunday, July 26, 2009 at 7:08pm by Shellie*

**Pre-Calculus**

Thanks!
*Sunday, September 6, 2009 at 8:51pm by Ashley*

**Pre-Calculus**

x+5=4
*Saturday, May 3, 2008 at 11:05pm by destiny*

**pre-calculus**

Thanks!
*Thursday, January 28, 2010 at 10:14pm by Kimmie*

**pre calculus**

y=x/b
*Friday, December 17, 2010 at 7:55am by bobpursley*

**pre-calculus**

what is the F-^1 of 6/x+4
*Sunday, May 22, 2011 at 10:14pm by kelly*

**pre calculus**

(m+3)+5
*Saturday, July 9, 2011 at 6:51pm by Anonymous*

**Pre-Calculus**

[2(1+.5) + 5 - (2(1)+5)]/.5 = [3+5 - (2+5)]/.5 = 1/.5 = 2
*Monday, September 12, 2011 at 7:26pm by Reiny*

**pre calculus**

ok thanks
*Sunday, September 25, 2011 at 7:09pm by amy*

**Pre-Calculus**

Thank you
*Monday, October 3, 2011 at 7:49pm by Leah*

**Pre Calculus**

x = 1/y y = 1/x = 1/2
*Saturday, October 22, 2011 at 7:57pm by Damon*

**Pre-calculus**

:)
*Monday, November 21, 2011 at 6:00pm by Damon*

**Pre-calculus**

Thanks!
*Monday, November 21, 2011 at 6:00pm by Ty*

**pre calculus**

Thank you!
*Saturday, December 10, 2011 at 10:14pm by anon*

**Pre-calculus**

2^(x)/(1-2^(x))=3
*Monday, December 12, 2011 at 10:46pm by Ivan*

**pre calculus**

Thank you!
*Saturday, December 17, 2011 at 9:15pm by James*

**pre calculus**

Thank u!
*Tuesday, December 20, 2011 at 9:40pm by anon*

**pre-calculus**

1.5
*Tuesday, April 3, 2012 at 4:16pm by mae*

**Pre-Calculus**

Oh...okay. Thanks for the help.
*Tuesday, July 31, 2012 at 8:50pm by Peter*

**pre calculus**

Yes.
*Sunday, September 16, 2012 at 11:18pm by Henry*

**pre-calculus**

x-3
*Saturday, October 6, 2012 at 11:27am by Anonymous*

**Pre Calculus**

thank you!
*Sunday, November 4, 2012 at 1:17pm by Marie*

**Pre-Calculus**

Thank You!
*Sunday, November 18, 2012 at 3:21pm by George*

**Pre-Calculus**

Thank you.
*Tuesday, January 22, 2013 at 11:09pm by Caroline*

**Pre-calculus**

1 D. 2 C. 3 A.
*Sunday, February 8, 2009 at 12:59am by james*

**Pre Calculus**

Thanks!
*Thursday, April 11, 2013 at 9:17pm by Alex*

**Pre-Calculus**

Thank you for your help
*Monday, April 22, 2013 at 10:55pm by Caroline*

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