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April 16, 2014

Homework Help: College

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College Math - Probability
Briefly summarize the experimental design for deciding whether a proposed treatment should go on for further study. Note where independence came into play. If you were more conservative and reject the treatment only if the probability that it is 30% effective is less than .05 ...
Monday, March 18, 2013 at 7:56pm

Newsworthy advice
Recently the Kalamazoo Gazette has published graphs and charts about the effect of the Kalamazoo Promise. I believe they showed statistics related to high school graduation and college success. You might also find charts and graphs for MEAP and other test scores. Here's ...
Monday, March 18, 2013 at 6:13pm

College Mathematics
Does this look right if it is 0-9 26*26*10*10*10*10=6,760,000
Monday, March 18, 2013 at 2:37pm

College Mathematics
it said 9 digits 0-9
Monday, March 18, 2013 at 2:31pm

College Mathematics
I answered this question for you 20 minutes before you reposted it http://www.jiskha.com/display.cgi?id=136​3627561 What part of my answer did you not understand ?
Monday, March 18, 2013 at 2:21pm

College Mathematics
Counting principles and permutations. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted. digits 0-9
Monday, March 18, 2013 at 2:09pm

College Mathematics
U.S. Presidents. The ages of the 44 presidents at their first inauguration (as of 2011) are: 57 57 49 52 50 42 54 55 64 61 61 64 56 47 51 51 56 46 57 54 50 46 55 56 60 61 54 57 68 48 54 55 55 62 52 47 58 51 65 49 54 51 43 69 a. Construct a frequency distribution with a first ...
Monday, March 18, 2013 at 2:04pm

College Mathematics
If the lead digit can be a zero then 10^9 If the lead digit cannot be a zero then 9(10^8)
Monday, March 18, 2013 at 1:52pm

College Mathematics
If the lead digit can be a zero then 10^9 If the lead digit cannot be a zero then 9(10^8)
Monday, March 18, 2013 at 1:51pm

College Mathematics
Counting Principles and Permutation. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted
Monday, March 18, 2013 at 1:26pm

college physics
OK, here is how to do that: How fast was the coin going after 1 second? V(1) = 1*t = 9.8 m/s After 2 seconds? V(2) = 2*t = 19.6 m/s How fast was the coin going when it hit the water? V(T) = 5*T Let T be the time when it hit the water. It will also take the sound of the splash ...
Monday, March 18, 2013 at 1:15pm

college physics
If I travel to Mexico and buy a 55g gold braclet for 20 dollars and take the braclet and submerge it in water starting out with 50cc and after it is submerged in the water it is 52.8cc. What is the buoyant force on the braclet? I also need to know if the braclet is real gold. ...
Monday, March 18, 2013 at 1:07pm

college physics
If a coyote is standing at the top of a 125 m cliff getting ready to drop a 230 kg boulder on a road runner. What is the potential energy of the boulder just as he is ready to drop it? What is the kinetic energy of the boulder at the instant it hits the ground? How fast is the...
Monday, March 18, 2013 at 12:54pm

college physics
If a girl drops a coin into a wishing well. After exactly 5 seconds she hears it splash into the water. How fast was the coin going after 1 second? After 2 seconds? How fast was the coin going when it hit the water? How far down is the water? Could you please help with the ...
Monday, March 18, 2013 at 12:46pm

math
A community college has 2,000 students and 50 instructors. Next year the enrollment will be 6,000. How many new instructors should be hired if the college wants to keep the same studentto instructor ratio?
Monday, March 18, 2013 at 12:39pm

college physics
if a girl pulls on a 15 kg wagon with a constant horizontal force of 35N.Her friend pushes on the wagon in the same direction with a constant horizontal force of 10 N. and there is a friction force of 15 N. I need to draw a diagram of this problem and calculate the Net Force ...
Monday, March 18, 2013 at 12:39pm

College Chemistry/Lab Math
Thanks for the help!
Monday, March 18, 2013 at 9:18am

college algebra
If you are confused by formulas, it indicates you don't really understand the concepts. Let's start from scratch. You know the graph is a parabola, which has a vertex. Since the coefficient of x^2 is positive, the vertex is at the minimum value of y. So, left of the ...
Monday, March 18, 2013 at 4:32am

college algebra
I need help bad. Don't know which formula to use. Please explain step by step. 2x^2-12x+19. Find the interval where f is increasing and decreasing.
Monday, March 18, 2013 at 2:04am

College Math
There are 4^2 ways of taking two scoops Of those, only 4 are both the same So, 4/16 = .25 is the chance that two random scoops are the same. Or, you can consider it like this. Given a first scoop of any flavor, there is a 25% chance that the 2nd scoop is the same, since there ...
Sunday, March 17, 2013 at 11:44pm

College Math
A ice cream shop sells 4 flavors of ice cream, assume that all orders of two scoops are equally likely, what is the probability that in an order of two scoops both are of the same flavor?
Sunday, March 17, 2013 at 10:49pm

statistics
I did not change names I have two children in college and they had different questions ask before you blame
Sunday, March 17, 2013 at 9:34pm

HSC/514
You could try different well known companies/hospitals. Once you start researching, you'll undoubtedly find a way to narrow down your topic. You may have to search and research, but once you learn some good sources and methods, you should have success. In addition to ...
Sunday, March 17, 2013 at 7:35pm

College Chemistry/Lab Math
Thank you for catching that. 0.0001g of gold/mL *(0.50mL)=0.00005g of gold Your new concentration will be 0.00005g of gold/total volume=0.00005g of gold/0.60mL=8.33 x 10^-5 g of gold/mL or 8.33 x 10^-5 g of gold/mL*(100)=8.33 x 10^-3 % m/v So, each test uses 0.00005g of gold 0...
Sunday, March 17, 2013 at 7:18pm

College Algebra
a box with an open top is constructed from a rectangular piece of cardboard with dimensions 14 inches by 18 inches by cutting out and discarding equal squares of side x at each corner and then folding up the sides as in the figure. The cost to create such a box is 2.50 per ...
Sunday, March 17, 2013 at 6:37pm

College Chemistry/Lab Math
Why did you multiply 0.0001g of gold/mL by 0.10mL? Shouldnt it be .50 mL? I say this because .10 is the volume of serum added, which does not contribute to the total amount of gold in the final solution.
Sunday, March 17, 2013 at 6:35pm

College Chemistry/Lab Math
This is good, but mass/volume %= (g/mL)*100 So, (0.10 % w/v)/100 = 0.001 g gold (in 1 ml) And so, (0.001g gold)/(1 ml + 9 ml) = 0.0001g of gold/mL ****Don't worry about mass/volume % at this point. But now you have a solution that is 0.0001g of gold/mL You remove 0.5mL of ...
Sunday, March 17, 2013 at 3:12pm

College Chemistry/Lab Math
Sorry, in my 3rd step it should be "(.5ml)/(1)"
Sunday, March 17, 2013 at 1:48pm

College Chemistry/Lab Math
I think I have this problem figured out correctly, but is there anyone who can tell me if I'm doing something wrong. The question is... "One troy ounce of gold is worth $380. There are 33.8 grams per troy ounce. You have a stock colloidal solution of a very fine gold ...
Sunday, March 17, 2013 at 1:46pm

math
From a survey of 100 college students, a marketing research company found that 85 students owned iPods, 45 owned cars, and 35 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)? 1 students (b) How many students do not own either a car...
Sunday, March 17, 2013 at 12:35pm

College Accounting
answer to chapter 21
Saturday, March 16, 2013 at 10:37pm

College Accounting
chapter 21
Saturday, March 16, 2013 at 10:36pm

computer
Honestly, as an engineer, I have never seen them do anything. Tenure: means get permanent job. part time instructor usually means the person has another job, often in that field,or related. But he could be a beekeeper, who knows? Where can you learn computer science by ...
Saturday, March 16, 2013 at 9:51pm

College algebra
Y = -x^2 - 6x. a. h = Xv = -b/2a = 6/-2 = -3 k = -(-3)^2 - 6*-3 = 9 V(h,k)=(-3,9). b. Axis = h = Xv = -3. c. Y = -x^2 - 6x = 0. x(-x-6) = 0 X = 0 = x-Intercept. -x-6 = 0 X = -6. = X-Intercept. d. Domain = All real values of X. e. f. X = -6 to -3. g. X = -3 to 0. h. Use the ...
Saturday, March 16, 2013 at 8:29pm

College Math
I don't know!
Saturday, March 16, 2013 at 1:18pm

college
The SUBJECT shouldn't be "college", it should be 'MATH'. How does kay expect to get help when when she doesn't say what subject she needs help in? Tanya you're slow..
Saturday, March 16, 2013 at 11:34am

ECONOMICS
Suppose your college charges you separately for tuition and for room and board. What is a cost of attending college that is not an opportunity cost? What is an explicit opportunity cost of attending college? What is an implicit opportunity cost of attending college?
Friday, March 15, 2013 at 11:44pm

college physics
Momentum before impact = M*V = 12*3 = 36 kg m/s. Force exerted = Impulse / decel. time) = (Momentum change)/(deceleration time) = 36/0.63 = ___ Newtons
Friday, March 15, 2013 at 10:45pm

college physics
if a 12kg ball rolls down a ramp at 3 m/s and crashes into a pillow and it takes 0.65 s to stop the ball what is the momentum of the ball and the force exerted by the pillow? I would like to know the formula on how to figure this out.
Friday, March 15, 2013 at 7:12pm

College algebra
Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y= -x^2-6x
Friday, March 15, 2013 at 5:45pm

College algebra
no value for x, means no value for f(x)
Friday, March 15, 2013 at 3:15pm

College algebra
Find the value of f(x) = -3x^2 + 12x-8
Friday, March 15, 2013 at 2:41pm

College Algebra
P(1, 2); Q(8, 26)
Friday, March 15, 2013 at 2:30pm

College algebra
since the x^2 term has a positive coefficient, there is no maximum value for f. As x gets large, so does f, without bound.
Friday, March 15, 2013 at 11:22am

College algebra
Determine without graphing, whether the given function has a maximum value and then find the value. f(x)=3x^2+18x-6
Friday, March 15, 2013 at 11:21am

College algebra!
a) by the "just look at it" theorem slope = 5, y-intercept is 3 b) can't graph on here c) average rate of change = slope = 5 d) the slope is positive, so the function is increasing college algebra ?? mmmhh.
Friday, March 15, 2013 at 11:03am

College algebra!
For the linear function f(x) = 5x + 3 (a) Determine the slope and y-intercept (b) Use the slope and y-intercept to graph the linear function. (c) Determine the average rate of change of the function (d) Determine whether the linear function is increasing, decreasing, or constant.
Friday, March 15, 2013 at 10:41am

College algebra
Fix the typo (d) the domain is all real numbers, since x^2+49 is never zero The rest should be easy. Come back if you get stuck, and show how far you got.
Friday, March 15, 2013 at 9:55am

College algebra
Answer the questions about the following functions. f(x) = 14^2/x^4 + 49 (a) Is the point (-sqrt 7,1) on the graph of f? (b) If x=1, what is f(x)? What point is on the graph of f? (c) If f(x)=1, what is x? what point(s) are on graph of f? (d)What is the domain of f? (e) list ...
Thursday, March 14, 2013 at 11:05pm

calculus
A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...
Thursday, March 14, 2013 at 12:17pm

calculus
A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...
Wednesday, March 13, 2013 at 9:32pm

can some1 plz recheck my answers
1. Which of the following is a specific goal? A. I will pass as many of my courses as possible. B. I will finish my college degree. C. I will devote Wednesday this week to work on my English research paper. D. To become a doctor is my goal. is it C 2. Which goal is realistic? ...
Wednesday, March 13, 2013 at 4:18pm

English
1. Which of the following is a specific goal? A. I will pass as many of my courses as possible. B. I will finish my college degree. C. I will devote Wednesday this week to work on my English research paper. D. To become a doctor is my goal. is it C 2. Which goal is realistic? ...
Wednesday, March 13, 2013 at 4:04pm

College Chemistry
Calculate activities of Ca2+ and F- and the solubility of fluorite (CaF2) in pure water at 25C without regard to possible hydrolysis. Assume that all activity coefficients are equal to one. Express the solubility of fluorite in terms of mol/L and g/L.
Wednesday, March 13, 2013 at 3:44pm

English
1. Which of the following is a specific goal? A. I will pass as many of my courses as possible. B. I will finish my college degree. C. I will devote Wednesday this week to work on my English research paper. D. To become a doctor is my goal. is it C 2. Which goal is realistic? ...
Wednesday, March 13, 2013 at 3:40pm

College Physics
w=1/LC
Wednesday, March 13, 2013 at 3:39pm

College physics
M= muo*N1*N2*Area/length
Wednesday, March 13, 2013 at 3:36pm

College physics
A toroidal solenoid has a mean radius of 8.00cm and a cross-sectional area of 4.80cm^2 and is wound uniformly with 90.0 turns. A second coil with 500 turns is wound uniformly on top of the first What is the mutual inductance of these coils?
Wednesday, March 13, 2013 at 3:26pm

College Physics
A 22 μF capacitor and a 5.20 mH inductor are connected in series with an open switch. The capacitor is initially charged to 6.70 μC. What is the angular frequency of the charge oscillations in the capacitor after the switch is closed? W = _____ rad/s
Wednesday, March 13, 2013 at 3:09pm

college physics
electomagnetic force
Wednesday, March 13, 2013 at 12:52pm

calculus
A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...
Wednesday, March 13, 2013 at 12:32pm

English
I split this sentence into 2 parts is the colon use correct between football and There's? I love college football: There’s nothing like the sound of a fully packed stadium.
Wednesday, March 13, 2013 at 12:02pm

College Algebra
What is the commutative law of addition to find an expressoon equivalent to 5m + 9n
Wednesday, March 13, 2013 at 1:23am

College Chemistry
The problem isn't worded that clearly; however, I think the 829 torr is the pressure of the 589 mL O2 and that is used to find mols O2. Then you must use PV = nRT again, with the n for O2, to find the pressure in the 1L flask. Alternatively you can use (P1V1/T1 = (P2V2/T1...
Tuesday, March 12, 2013 at 11:03pm

College Chemistry
What about the 829 torr? Where does that go?
Tuesday, March 12, 2013 at 10:53pm

College Chemistry
mols NO = grams/molar mass and convert that to pressure with PV = nRT. I get approximately 0.8 atm but you doit more accurately. USe PV = nRT to solve for mols O2 and convert that to pressure in the 1L container using PV = nRT. I get approximately 0.6 atm. ...........2NO + O2...
Tuesday, March 12, 2013 at 10:21pm

College Chemistry
[NO]= [O2]= [NO2]=
Tuesday, March 12, 2013 at 9:59pm

College Chemistry
2NO(g)+O2(g)<->2NO2(g) has KP = 2.77 × 1011 at 25 °C. Suppose a mixture of the reactants is prepared at 25 °C by transferring 0.943 g of NO and 589 mL of O2 measured at 30.7 °C and 829 torr into a 1 L vessel. When the mixture comes to equilibrium, what ...
Tuesday, March 12, 2013 at 9:55pm

College Mathematics
P(jack or club)= pr(jack)+Prob(club)-Prob(both) = 4/52+13/52-1/52 check that.
Tuesday, March 12, 2013 at 1:15pm

College Mathematics
There are 13 clubs and then 3 jacks. 16/52 Using the rule P(J) = 4/52 P(C) = 13/52 P(C + J) = 1/52 the Jack of Clubs
Tuesday, March 12, 2013 at 1:14pm

College Mathematics
This is a repost. I posted a question 2 days ago and the response was wrong. The question was on Probability. The question was One card is selected from a deck of playing cards. Determine the probability of selecting a jack OR a club. use this rule P(A or B) = P(A) + P(B) - P(...
Tuesday, March 12, 2013 at 1:10pm

College Mathematics
Probability. Select one card. One card is selected from a deck of playing cards. Determine the Probability of selecting a Jack OR a club. P(AorB)= P(A) + P(B) - P(A and B)
Tuesday, March 12, 2013 at 11:04am

Teacher Aide; Enhancing Children's Self Esteem
The best way to create self-esteem is to teach children well so they LEARN what they need to learn and experience success. Intrinsic self-esteem is far better than the false self-esteem (based on no achievements at all) touted by so many in the schools these days. Here's ...
Tuesday, March 12, 2013 at 8:55am

College Math
a = 1/2 bh
Monday, March 11, 2013 at 4:08pm

College Math
Find the area of a triangular piece of carpet that has a 12-inch base and is 18 inches high.
Monday, March 11, 2013 at 3:59pm

valculus
A new college textbook edition typically generates most of its sales in the year of its publication. Sales drop off in subsequent years as a result of competition from the used book market. Suppose that the annual sales of a particular textbook may be modeled by S(t) = 30,000 ...
Monday, March 11, 2013 at 3:09pm

English
i have a hard time calculating my grade & am in college. Please tell me the grade I have so far & will have, thank you!365 points in the course is needed. Lecture exams and quizzes are worth about 60% of the total grade &90 ≤ A 80 ≤ B < 90 70 ≤ C < 80 ...
Monday, March 11, 2013 at 12:50pm

College Mathematics
if 1st card is JC, p=1/52 If 1st card is J~C, then C, p = 3/52*13/51 If 1st card is C~J, then J, p=12/52 * 4/51 So, p(any) = 1/52 + 3/52 * 13/51 + 12/52 * 4/51 = 23/442 = 0.052
Monday, March 11, 2013 at 11:56am

College Mathematics
(odds) Playing Bingo:When playing bingo, 75 balls are placed in a bin and balls are selected at random. Each ball is marked with a letter and a number as indicated in the following chart: B: 1-15 I: 16-30 N:31-45 G:46-60 O:61-75. For example there are balls marked B1,B2 up to ...
Monday, March 11, 2013 at 12:10am

College Mathematics
Probability: "or" and "and" problem. Select one card, one card is selected from a deck of playing cards. Determine the probability of selecting a jack or a club.
Sunday, March 10, 2013 at 11:37pm

college general chemistry
Why don't you re-post this as a new question and include the numbers? Otherwise I don't know what you're talking ab about.
Sunday, March 10, 2013 at 9:29pm

college general chemistry
3Co(NO 3 ) 2 (aq) + 2Na 3 PO 4 (aq) &---> Co 3 (PO 4 ) 2 (s) + 6NaNO 3 (aq) how do I find the molar mass of precipitate.X hydrate
Sunday, March 10, 2013 at 1:48pm

College Algebra
fack you
Sunday, March 10, 2013 at 1:06pm

stats
The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months. x 0 1 2 3 4 5 P (X=x) 0.20 0.25 0.20 0.15 0.10 0.10 Find P( X > 1)
Sunday, March 10, 2013 at 8:46am

College Algebra
Are you missing an x? 2x^2 + 2x + 5 = 0 a = 2 b=2 c = 5 If your answer = 0 then there is only 1 real number solution. If your answer = any positive number you will have two real solutions If your answer = any negative number you will have two imaginary solutions. All of the ...
Saturday, March 9, 2013 at 4:45pm

College Algebra
Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions. 2x2 = -2 -5 Thank you
Saturday, March 9, 2013 at 4:42pm

College Chemistry-Please help me
3Ba2+(aq)+2OH-(aq)+6H+(aq)+2(PO4)3-====&​gt;Ba3(PO4)2(s) + 6H2O You separate the elements, then if there is a reaction you end up with a Net equation, because this has H20 and an solid Ba3(PO4)2 the net equation it the same as the ionic, you can't break apart a solid...
Saturday, March 9, 2013 at 12:10pm

Lang. Arts
How can we know what is in the article? We cannot know what evidence was presented, you have to figure that out from the article. From my experience with MS kids, both a and b are true, and again from exprerience with dealing with kids in bad situations, (b) was more important...
Saturday, March 9, 2013 at 10:54am

college physics
This generates electricity by electromagnetic induction. Everytime the magnet passes the electric coil, a change in magnetic flux suddenly causes a large potential difference, and hence a spark.
Saturday, March 9, 2013 at 12:35am

college algebra
Graph f(x)= 1/2 ^(x+3) -2
Saturday, March 9, 2013 at 12:18am

college physics
small one-cylinder gasoline engines sometimes use a device called a magneto to supply current to the spark plug. A permanent magnet is attached to the flywheel, and a stationary coil is mounted adjacent to it. Explain how this device is able to generate current. What ha[[ens ...
Friday, March 8, 2013 at 3:22pm

college algebra
you have the formula. Plug in 1000 for a and evaluate.
Friday, March 8, 2013 at 2:20pm

college algebra
An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 2,500 + 400 ln a (a ¡Ý 1) How many units are sold after spending $1,000? (Round your ...
Friday, March 8, 2013 at 1:24pm

homework
A trigangular region of a community college parking lot was measured. The measure of the first angle of this triangle is doubled the measure of the second angle. The measure of the third angle is 89 degree greater than double the measure of the first angle. what is the ...
Friday, March 8, 2013 at 2:53am

college english
Talk to the Hand: The result when communication pathways are blocked
Friday, March 8, 2013 at 1:09am

College Math
This is dumb!
Friday, March 8, 2013 at 12:30am

MONGU COLLEGE
I cannot calculate the freq. unless the reactance of the inductor or capacitor is given. I will assume a 230v.- 60 Hz supply. a 60 Hz. b. Xl = 2pi*F*L = 6.28*60*4 = 1508 Ohms. Xc = 1/(2p*F*C) = 1/(6.28*60*25*10^-6= 106 Ohms. Z = R + j(Xl-Xc) Z = 15 + j(1508-106) Z = 15 + j1402...
Thursday, March 7, 2013 at 10:20pm

MONGU COLLEGE
Is the inductive reactance of the coil 1200 ohms? If so: a. Xl = 2pi*F*L = 1200 Ohms. F=Xl/(2pi*L)=1200/(6.28*0.07)=2728.4 Hz. b. Xc = 1/(2pi*F*C) Xc=1/(6.28*2728.4*0.001*10^-6)=58333 Ohms Z = Xl+ Xc=1200 + (-58333)=-57133 Ohms, Capacitive. = 57133@(-90) Deg. I = V/Z = 120/...
Thursday, March 7, 2013 at 8:36pm

college physics
What is the difference between questions 1 and 2?
Thursday, March 7, 2013 at 5:18pm

college physics
A long, straight, cylindrical wire of radius R carries a current uniformly distributed over its cross section. 1. At what location is the magnetic field produced by this current equal to quarter of its largest value? Consider points inside the wire. 2.At what location is the ...
Thursday, March 7, 2013 at 3:36pm

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