# Posts by Student

Total # Posts: 867

math, help
I need help or hint on the setup: what is the probability that at least 2 students in a class of 36 have the same birthday? This is 1 minus the probability that all students have different birthdays. Suppose that the birthday of a student is completely random. Then we can ...

math, help
For this one i have no idea what formula or even how to set it up... Tow 6-sided dice are rolled. What is the porbability that the sum of the two numbers on the dice will be greater than 9? Notation: n1 is the number that die 1 shows, n2 is the number that die 2 shows. Then we...

math,correction&help
the problem asks: a bag contains 5 aplles and 3 oranges. If you select 4 pieces of fruit without looking, how many ways can you get exactly 3 apples? so i did: "c"=stands for combination (5C3) =10 (3C1) = 6 so i multiplied 10*6 = 60 ways possible It seems to me it is...

math,help & correction
the question asks: How many 5-card poker hands consisting of 2aces and 3 kings are possible with an ordinary 52-card deck? this is what i did: "c"=stands for combination (4C2) * (4C3) = 6*4 = 24 (52C5) = 259860 so then i divided : (24)/(259860)= 9....

math,help
a company is taking a survey to find out whether people like its product. Their last survey indicated that 70% of the population like the product. based on that, of a sample of 58 people, find the probability of the following. a) all 58 like the product. for this do i do: 0.70...

Math, help
I need help what formula would i use or what steps do i take? A professor gives a test with 100 true-false questions. If 60 or more correct is necessary to pass, what is the probability that a student will pass by random guessing? The brute force way of doing this is add up ...

math,help
what formula or how do i solve for this: How many 5-card poker hands containing of 2 aces and 3 kings are possible with an ordinary 52-card deck? (4*3*2)/3! combinations of three kings x (4*3)/2)combinations of two aces = 24.

math ,correction
Is this correct? consider determining how many possible phone numbers are in an area code (repeated numbers allowed) Is this a combination, a permutation, or neither? I think it would be a combination wouldn't it? Since there are ten number possibilities in each of the ...

math,correction
Find expected value for the random variable. its suppost to be a table 6 X 2 i used the .... to represent separation z.....3......6.....9.....12.......15 p(z)..0.14..0.29..0.36..0.11...0.10 So what i did is i said e(x) = 3 (0.14)+ 6(0.29)+ etc to all the rest. and my result ...

bobpursly
thank you for all your help that your doing and all the other tutors....

math, help
What is a situation where the mode is the best average to use to describe data. If you are hunting deer, which location would you hunt in? The mode location, or somewhere else? do you mean that the mode would be like a pin point area of where is the best location? The mode ...

math ,correction
is this right? Find the standard deviation to the given data. The manager of a small dry cleaner employs six people. As part of their personnel file, she asked each one to record to the nearest one-tenth of a mile the distance they travel one way from home to work. THe six ...

math ,correction
Is this correct..... Solve the problem. Round to the nearest hundredth, if necessary the following data gives the number of appliaces that applied for a job at a given company each month of 1999: 64,67,94,76,78,82,87,88,90,73,64. What is the mean of the data. once again i ...

math correction
heres another problem can someone correct it for me... find the median of: 8,10,26,23,31,34 This is what i did i place them in order from smallest to larger number then i made both sides equal so then i am left with two numbers in the middle wihich would be 23 and 26 so i ...

math,correction
can someone correct me please... Find the mean. Round to the nearest tenth. *its a table with 2colums and 5 rows: */* = this is used for separation of columns: value / frequency 146/3 216/2 257/3 278/4 320/2 This is what i did i did a third column and whats in it is the value ...

math,correction
can someone correct me on this: Find the mean for the list of numbers: 79, 40, 79, 98, 40(round to the nearest tenth) this is what i did: I added all the numbers then divided by the amount so it would be: 336/5 = 67.20 i don't round further i leave it as is: correct.

math. algebra 2
I need help with this problem I do not understand how to solve this kind of problems....can someone show me and explain it to me thanx. Find a Z-score satisfying the given condition: 82.9% fo the total area a is to the left of z. http://www.fourmilab.ch/rpkp/experiments/...

statistics, help
Can someone help me which way can I approach this problem. A hint of a formula or anything would be helpful... Life of Light Bulbs A certain type of light bulb has an average life of 500 hours, with a standard deviation of 100 hours. The length of life of the bulb can be ...

statistics, math,drwls
Is there a website where i can find the information you provided further because i am still not understanding towards what you mean.....thanks i'll appreciated it... My question is in statistics under what circumstances would the mode be an appropriate measure of central ...

Statistics,math
My question is in statistics under what circumstances would the mode be an appropriate measure of central tendency? Whenever you expect a "normal" Gaussian distribution and have a large number of measurements. In that case the "mode" or most frequently ...

math, help
How did they solved this problem i got this one wrong on my quizz. Pizza Varieties A television commercial for Little Caesars pizza announced that with the purchase of two pizzas, one could receive free any combination of up to five toppings on each pizza. The commercial shows...

math, bobpursley
so how did you say to do part c c) if there is 2 woman and 5 men in the group, how many delegations would include at least 1 woman? would it be the answer to part a minus the number of 2 man pairs which will give me: 21 - 5combination 2 = 21-10 = 11 Ooops, you are right. 7!/5!...

math correction
can someone correct this problem for me thanks A group of 7 workers decide to send a delegation fo 2 to their superviosr to discuss their grievances. a) how many delegations are possible? my answer: 21 b)If it is decided that a particular worker must be in the delegation, how ...

math , correction
#1 A menu offers a choice of 3 salads, 8 main dishes, and 5 desserts. How many different meals consisting of one salad, one main dish, and one dessert are possible? My answer: 120 mealks possible #2 An uto mobile manufacturerr produces 7 models, each available in 6 different ...

math,correction
can someone correct this for me parts A-E and if i am wrong can you help me....please How many 7-digit telephone numbers are possible if the first digit cannot be zero and..... a) only odd digits may be used? my answer: 8125 b) the telephone number must be multiple of 10(that ...

MATH
Can someone give me an example of decribing a real-life situation where I can use the pascals triangle to be used to calculate probability. One example is provided here: (Broken Link Removed) I cannot log on to the website you provided

math
How can one calculate the odds of winning the jackpot in the lottery. The probablity is the number of ways to win (usually one) divided by the number of possible entries.

math117
The area of a rectangle of length x is given by 3x2 +5x. Find the width of the rectangle. The area of a rectangle with width t is given by 33t - t 2. Factor the expression and determine the length of the rectangle in terms of t length times width=area, so factor out an x to ...

math,help
what formula do i use for the following problem: which of the following investments is larger after 19years? a) \$7500 is deposited annually and earns 4.5% interest compounded annually. b)\$600 is deposited monthly and earns 4.5% interest compounded monthly. Does he deposit the ...

Math, Help
I am lost with these two problems... Problem #1 Write a sample space for the given experiment A box contains 3 blue cards numbered through 3, 4green cards numbered through 4. A blue card is picked , followed by a green card. Problem #2 Write the indicated even in set notation ...

math,orrection
is this correct now.. Problem #1 Find the simple interest assume a 360-day year. Round result \$17000 at 9%for 119 days. answer: 5619.44

math,help
what formula do i have to use for this problems. Problem #4 John Lee saving account has a balance of \$2449.After 7years what will be the amount of interest be at 8% compounded semiannually? Problem #5 Southewest Dry cleaners believes that it will need new equipment in 5 years ...

math correction
I had asked on these problems previously but here is my final answers are they correct now... Problem #1 Find the simple interest assume a 360-day year. Round result \$17000 at 9%for 119 days. My answer: 504.90 Problem #2 Find compund amount for the deposit. Round to the ...

math,correction
can someone correct these for me thanks.. Problem #4 Find the effective rate corresponding to the given nominal 18% compounded quarterly. My answer: 19.2% Problem #7 Find the future value of the ordinary annuity If R= \$2500,I=5% interest compounded quarterly for 16 years. My ...

math
P (in millions) = 250 x 2^( y-1990)/66 What was the approximate population of the United States in 1960? p=250x2^-.4545 How do i figure this out from here 2^(-.4545) = 0.729763045 Put 2^(-.4545)into the Google search window, and the google caculator will do it for you. If you...

math,algebra
what is the correct formula to use for the following problem: Find compound amount for the deposit.Round to the nearest hundredth \$11000 at 6% compunded quarterly for 2years. the one that i am thinking of is: a = p(1 + (r)/(m))^mt so my a = 1100;r=0.06;t=2 so the interest = r/...

math, algebra
The problem states find the simple interest . Assume a 360 day year. Round result. \$17000 at 9% for 119 days. So, I know i have to use the formula I=Prt so my p = 17000; r = 0.09; t= ? how do iwrite out time if it has 119 days and the t needs to be in years.... time will be ...

Health
In dehydration why is water essential to health maintence? This site will give you the clearest answer as to why water is essential to good health. (Broken Link Removed) In addition to the site posted by GuruBlue, you may also want to check this site which points out, "It...

drwls,math
so you are saying that i should label p = 30 i = 0.0125/12 = 0.0010416666666666666666666666666667 n = 12(3) = 36 then plug it into what formula ? Problem: Stereo shack sells a stereo system for \$600 down and monthly payments of \$30 for the next 3 yrs. In the interest rate is 1...

math, question
what formula did the book use and the set up for it to get this answer for this problem: Problem: Stereo shack sells a stereo system for \$600 down and monthly payments of \$30 for the next 3 yrs. In the interest rate is 1.25% per month on the unpaid balance, find the cost of ...

TO : Brie/Religion
I just went under dictionary and this is what it came up with. i hope this helps What is an apologist? Definition: defender of belief: somebody who defends a doctrine or ideology IN other words: Synonyms: defender, supporter, ally, protector, champion, advocator I looked it up...

math
what is an example of the important facts on obtaining a loan for a new car as a math problem. Knowing that some facts are: credit interest if good credit or high interest if bad credit. how can i show an example of what i am trying to say in a math problem using formulas for ...

math
what formulas do i use for this: Investments Suppose \$10,000 is invested at an annual rate of 5% for 10 years. Find the future value if interest is compounded as follows. A) Annually B) Quarterly C) Monthly D)Daily (365 days) In each case, use the formula Future value = ...

math
what formulas do i use for this: Investments Suppose \$10,000 is invested at an annual rate of 5% for 10 years. Find the future value if interest is compounded as follows. A) Annually B) Quarterly C) Monthly D)Daily (365 days) A) 10000*(1+.05)^10 B) 10000*(1+.05/4)^40 C) 10000...

math
also, what formula would i have to use for this: Effective Rate An advertisement for E*TRADE bank boasted "We're ahead of banks that had a 160-yr start," with an APY (or effective rate) of 2.01%.* The actual rate was not stated. Given that interest was compounded...

math
what formula would i use to solve for this: Loan Interest A developer needs \$80,000 to buy land. He is able to borrow the money at 10% per year compunded quarterly. How much will the interest amount to if he pays off the loan in 5yrs? You need a loan amortization table to ...

math
How did they get to this answer can someone explain the steps. Directions: Find the future value of each ordinary annuity, if payments are made and interest is compounded as given. R = 15,000; 12.1% interest compounded quarterly for 6 yrs. answer: \$518,017.56 I assume R is the...

math
What formula should i use for this problem.Or how should i solve it stock growth: A stock that sold for \$22 at the beginning of the year was selling for \$24 at the end of the year. If the stock paid a dividend of \$0.50 per share, what is the simple interest rate on an ...

math, algebrai II
Can someone please explain how they got the answer for this problem its in my book: Directions: Find the amount that should be invested now to accumulate the following amounts, if the money is coupounded as indicated. \$7500 at 12% compounded quarterly for 9 yrs. answer: \$2587....

algebra
When i have a matrix 4 X 4 and i have to multiply it by a 4 X 3 i know that the product size has to be a 4x 3 so do i do a row times column or how ? It's easiest to learn using the notations for tensors. For any matrix X denote the entry in the i-th row and j-th column as...

math,finite mathematics
this is what i have so far for the following problem but i don't know what to do next: Use the simplex method to solve the linear programming problem minimize W = 4 y1 + 2y2 subject to: 3y1+2y2>=60 4y1+y2>=40 y1>=0,y2>=0 so this is how i started it: i did it in...

math, finite mathematics
My question is that i need help for this problem understanding how they came about to the answer it is an odd problem so: The answer they have is: 18 cakes for the first one. 8 cakes for the second one. 2 cake for the third one. Here is the original problem: A baker sells ...

math
this problem is given me very much difficulty because of the set up and what to do. can someone assit me if you have a few minutes. thanks. Income. A baker has 250 units of flour, 90 of sugar, and 150 of raisins. A loaf of raisin bread requires 1 unit of flour, 1 of sugar, and...

Math
Can somone help me with this word problem....thanks The cut-right company sells sets of kitchen knives. The basic set consists of 2 utility knives, 1 chef's knife. The Regular set consists of 2 utility knives, 1 chef's knife, and 1 slices.The deluxe set consist of 3 ...

geog

geographie
Which are the principal economical partners of Canada? Living in Canada, I can answer that. The principal economic partner of Canada is the USA, and the number one partner of the USA is Canada. Together we form the largest trading partnership in the world, at about 1 Billion ...

Math Homework
1) Given the side of a square pyramid is 6cm and the altitude is 4cm calculate the surface area. 2) Given the side of a square pyramid is 12cm and the altitude is 8cm calculate the surface area. 3) Given the side of a square pyramid is 18cm and the altitude is 12cm calculate ...

Biology - Electron Transport Chain
Hi, does the electron transport chain actually PRODUCE ATP? It says on my sheet that 4 molecules of ATP are produced in this way. Since this is not my area of expertise, I searched Google under the key words "electron transport chain ATP" to get these possible ...

chemistry
Equation- Mg + 2HCl -> MgCl2 + H2 What volume of hydrogen at STP is produced from the reaction of 50.0 g of Mg and the equivalent of 75g of HCl? To get the volume of hydrogen, you need to know how many MOLES of hydrogen are produced. To know this, you need to know how many ...

Math
What means Area? Length x width area is the amount of area inside a figure or a shape figure

World Literature
That is not a question, that is Alien talk

I PLEDGE ALLEGIANCE TO THE FLAG OF UNITED STATES OF AMERICA WHAT ARE THE NEXT LINES? And to the Republic, For which it stands, one Nation, Under God, Indivisible, With liberty and justice for all

another college math question
Please teach me. I am completely blank with it. :( Let alpha = (3+sqrt(-3))/2 belongs to Q[sqrt(3)]. Show that if x is congruent to 1 mod alpha, then x^3 is congruent to 1 (mod alpha)^3. Similarly, show that if x is congruent to -1 mod alpha, then x^3 is congruent to -1 (mod ...

college math question
Find the GCD of 24 and 49 in the integers of Q[sqrt(3)], assuming that the GCD is defined. (Note: you need not decompose 24 or 49 into primes in Q[sqrt(3)]. Please teach me . Thank you very much. The only integer divisor of both 24 and 49 is 1. I don't know what you mean ...

college math
Suppose 32 = alpha*beta for alpha, beta reatively prime quadratic integers in Q[i] . Show that alpha = epsilon*gamma^2 for some unit epsilon and some quadratic integers gamma in Q[i]. Please help me . I got stuck with it! I'm not an expert in this stuff, but I think you ...

ethnics help
I too am trying to find the entire answer...but I would like to offer a tip for finding the answers in our reading. Yes Chapter 11 is where u need to be. And if you go to the PDF tool bar & click on search, enter the word(s) such as "orientalism" and you will get ...

ethnics help
If you are an Axia student then, YES, there is reading materials for this "crap". There is a whole chapter of the text that answers each part of our questions thoroughly and clearly. Chapter 11 of the "Racial and Ethnic Groups" text that is available ...

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