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Probability (Pre-Calculus)

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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...

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 ...

Pre Calculus
Pre Calculus why is sin(-20)/cos 380 equal to tan (-200)

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!

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 ...

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 =)

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 =)

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%

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

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

Pre-Algebra
Hi, Well, I have a test tomorrow and I was hoping that's 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?

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 ...

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 ...

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!

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

math
In a survey to determine the opinions of Americans on health insurers, 400 baby boomers and 600 pre-boomers were asked this question: Do you believe that insurers are very responsible for high health costs? Of the baby boomers, 232 answered in the affirmative, whereas 192 of ...

Pre-Calculus 12
I am refering to the question posted on Tuesday, June 6, 2017 at 8:26pm. "how to graph y= (x^2-3x-10)/(x-2)" This is the reply I got: Pre-Calculus 12 - Damon, Tuesday, June 6, 2017 at 9:21pm (x-5)(x+2)/(x-2) well we know it is 0 at x = 5 and at x = -2 and we know it explodes ...

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

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 ...

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. ...

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...

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, don't know where to go abouts from here: I did it on paint and uploaded ...

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?

pre-calculus
3(4^x)-2^(x+2) = -1

pre calculus
27^8x-3=(1/81)^8x-4 x=?

pre calculus
2n^1/3(n^2/3+n^-1/3)

pre-calculus
what is the F-^1 of 6/x+4

pre calculus
(m+3)+5

pre calculus
-2< x < 5 - -

Pre-calculus
2^(x)/(1-2^(x))=3

pre-calculus
(2^(4+pi))/ 2^(1+pi)

pre-calculus
x^3e^x - 4e^x =0

Pre-Calculus
3x^2 + 8 = -4

pre calculus
x^2-3/4x+1/8=0

pre calculus
x^2-3x-7=0

pre calculus
2k^2+5k-9=0

pre calculus
2k^2+5k-9

pre calculus
C=2 x^=8y

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 ...

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...

pre algebra Is it A,B,C or D?
Rodney flips a fair coin and chooses a letter tile A, E, I, O AND U. He performs this experiment 50 times to determine the experimental probability that heads is tossed and the letter A is chosen. Which of the following is most likely to be the experimental probability that ...

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 ...

Pre Calculus
Formula: a = b = c

Pre Calculus
Formula: a = b = c

Pre calculus
gfk

Pre-Calculus
How do I find xy^-2(xy^2 - 4y^4) ??

Pre-Calculus
How do you factor x^3 - 64?

pre- calculus
simplify 3x+2y/3y

pre calculus
if y = bX, then its inverse is

pre calculus
let f(x)= -x^2 - 1. evaluate f(x)at x=6, -6

pre calculus
what is the vertices of 7x^2+5y^2=35

pre calculus
what is the vertices of (x+1)^2/4+(y+2)^2/25=1 ?

Pre Calculus 1
ln(3x-1) - ln(x+2) = 2ln5

Pre Calculus 1
lnx + ln(x+3) = 2

pre-calculus
What is the domain of (x+2)/(x-2)?

PRE CALCULUS HELP PLEASE
((ln(x))^1/2)/(ln(x^1/2))=6

pre calculus
2x^2+11x-21=0

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 ?

Pre-Calculus
14cos+7=O

pre calculus
find (a)2v+u, (b)u-3v, and (c)5u-v u=<0,-4>, v=<-2,-8>

pre calculus
find (a)2v+u, (b)u-3v), and (c)5u-v u=<-2,-3> v=<-1,-10>

pre calculus
find (a)2v+u, (b)u-3v), and (c)5u-v. 1.u=i-j, v=6i+9j 2.u=2i+3j, v=-i-2j

pre calculus
solve 2x + y = 8 4x + 2y = 16

Pre-Calculus 12
how to graph y= (x^2-3x-10)/(x-2)

Pre-Calculus 12
how to solve 3^(x-2) = 5^x

pre algebra
The probability that Ann will have a test on Wednesday is .9. If she takes the test, there is a probability of .8 that she will pass the test. What is the probability that Ann will not pass the test on Wednesday? Is it .18 ?

Math - Studying for Pre Calc exam!
Approximate the solutions (to three decimal places) of the given equation in the interval (- pi/2, pi/2) 6 sin 2x − 8 cos x + 9 sin x = 6 Can you help with this please? I am studying for my Pre Calculus 1 exam and am stuck on this question...! The answer options are a. x...

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?

Pre-Calculus
How do I find f(g(x)) when there is a radical?

pre calculus
x^2+y ^2+ 4x + 6y - 12 = 0 how do i find the domain?

pre calculus
simplify sin(2 pi/3+x)

Pre-Calculus
2secx= 3cscx

Pre-calculus
x-2/x2-1 This equation is a function or not?

Pre Calculus
FACTOR COMPLETELY 1) x^8-y^8

pre-calculus
tan(1/2)cos^-1(9/10)

Pre-Calculus
is f(x)=9x^(5/3) a power function?

pre calculus
are you an online tutor

Pre-Calculus
Is the period of f(x) = 2cos(3x - ð) 2ð/3?

Pre-calculus
1) What is the equivalent of this? -5x(2x+7y)+7xy-4x(y+3)

Pre-Calculus
How to find domain of: y = -3 + ãx+6

Pre-Calculus
y= ((2-3x^(1/x))/(2+3x^(1/x)) Is the horizontal asymptote y= 1 or y= -1?

Math (pre calculus)
ax+b/cx+d=2 solve for x

Pre-Calculus/Trigonometry
for f(x)= 1/(x^2-3), find: a. f(3) b.f(2+h)

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)

pre-calculus
6cos^2(x)-5cos(x)-6

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?

Pre-Calculus
find the inverse of g(x)=(x+7)^3+4

Pre-Calculus
What are the holes of the function f(x) = (x^2 + 3x - 4)/(x^2 + 9x + 20)?

Pre-Calculus
How do I find the domain of K(x) = x(32 - 2x)^2?

Pre-Calculus
Given: u <-1, 7> and v <4, -3> Find: (u • v)(u + v)

Pre-Calculus
What is the absolute value of: 3 - 8i? A. 9 B. 64 C. √55 D. √73

pre calculus
Can you explain how to find (u • v)(u + v) when u <-1, 7> and v <4, -3>

Pre-Calculus 12
2x^3 - 13x^2 + 32x - 13 = 0

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?

Pre-Calculus/Trivia
csc(theta)= 1/x sec(theta)= 1/ sqrt(1-x^2) cot(theta)= sqrt(1-x^2)/x What are these equations used for in real life matters or in regards to calculus? Can't seem to find the answer anywhere :/

pre- calculus
how do you find the root(s) of the equation x^2+3x-4=0

Pre-calculus
Describe the end behavior of f(x)=2x^4-5x+1.

Pre Calculus
log(log10^10,000)

pre-calculus
Solve this Function: (3x-7)^2 (x^2-9x+18) ---------------------- x (x^2-12x+40) (x^16)

pre calculus
How do you simplify cos ((pi)/2) - feta?

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