06/14/15

Probability - How to determine population parameter
Please help. A researcher collated data on American's leisure time activities  She found the mean number of hours spent watching tv to be 2.7 hrs with a standard deviation of 0.2hrs.  John believes... more
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06/14/15

jordan is jyears old.five years ago,marshall was three times older than jordan will be in two years.in terms of j,how old is marshall now?
pls solve this problem if u want the options are 1) j/3-11 2) j/3-5 3) 3 j +5 4) j+7.
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06/14/15

Group axioms proof
A group is a collection G that satisfies the following 3 axioms: 1) associativity a·(b·c)= (a·b)·c 2) identity element e: e·a=a ∀a in G 3) Inverse. Each element a in G has an inverse a-1 such that... more
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06/13/15

A total of $21,000 is to be invested into 2 investments? One exceeding $3000 more.. how many in each
A total of $21,000 is to be invested, some in bonds and some in certificates of deposits. If the amount invested in bonds is to exceed that in CDs by $3,000, how much will be invested in each type?
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06/13/15

solve problem
Find the polynomial function of lowest degree with rational coefficients that has the given number as some of its zero?   4+i, 4
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06/13/15

Algebra word problem
A Web music store offers two versions of a popular song. The size of the standard version is 2.6 megabytes (MB). The size of the high-quality version is 4.5 MB. Yesterday, the high-quality version... more
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06/13/15

Break even point!! Help!!!
Scenario with formulas: Cost Function C(Q)= 8q+3200 Revenue Function R(Q)= -10p^2+850p ( in terms of q,  (1/10q^2)+85q ...? I think?) Find the break even point(s) for this scenario. Identify the... more
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06/13/15

Max and Millie Dice Game
Max and Millie have invented a dice game. They roll two four-sided dice and look at the difference between the two numbers that come up. Max scores a point if the difference is 1 or 2. Millie... more
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06/12/15

Underline and correct 15 errors in subject verb agreement
1.In early culture, parents tell their children special stories and pass on particular traditions. Each story have a purpose. For example, a worry doll, which is made of rags, have an important... more
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06/12/15

An experiment selecting a student body president and vice president. All undergraduate students (freshmen through seniors) are eligible for these offices.
An experiment consists of selecting a student body president and vice president. All undergraduate students (freshmen through seniors) are eligible for these offices. How many sample points... more
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06/12/15

Precalculus help dealing with series
For the following series find the value of a(t1)   A) Arithmetic series with the 4th term of 6 And the 8th term of 18   B) geometric series with the 3rd term of 12 and the 7th term of... more
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06/12/15

finance story problem help
The following question is based on the following information about the stocks of KT Corporation, International Flavors & Fragrances, and Quality Systems. Price Dividend YieldKT (KT... more
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06/12/15

story problem help
A bagel store orders cream cheese from three suppliers, Cheesy Cream Corp. (CCC), Super Smooth & Sons (SSS), and Bagel's Best Friend Co. (BBF). One month, the total order of cheese came to 100... more
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06/12/15

story problem help
Suppose in one year, total revenues from digital sales of pop/rock, tropical (salsa/merengue/cumbia/bachata), and urban (reggaeton) Latin music in a certain country amounted to $26 million.... more
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06/11/15

Probability
Four red cards and four green cards are well shuffled. Cards are drawn, without replacement, until the color of a card drawn matches the color of the first card drawn. Find the average number of... more
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06/11/15

binomial expansion
if  (2r + 3 )th  and (r-1) th terms in the expansion of (1+ x) 15 have equal coefficiants  then r equals     3 4 5 6  
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06/11/15

Help: "Dirichlet pigeonhole principle" discrete math problem
I need to prove that According to "Dirichlet pigeonhole principle" if the numbers 1-64 are given and we choose 33 of those, prove that there is at least one couple of numbers so that one number is... more
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06/10/15

Bayes' Rule
The IRS checks the deduction for contributions to identify fraudulent tax returns. They believe that if a taxpayer claims more than a certain standard amount, there is a 0.20 probability that the... more
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06/10/15

Bayes' Rule
At a gathering of undergraduate students, 16% were freshmen, 29% sophomores, 42% juniors, and 13% seniors. The percentage who had 8 o'clock classes were the following: freshmen, 37%; sophomores,... more
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06/10/15

Bayes Rule
At the Campus Coffee Nook, 35% of the customers order regular coffee and 65% order flavored coffee. Of those who order regular coffee, 40% drink it black and 60% use sugar or cream. Of those who... more
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06/10/15

Probability
At a joint meeting, 100 Young Republicans and 75 Young Democrats are present to debate issues in the upcoming campus elections. On the issue of campus parking, 35% of the Young Democrats and 60% of... more
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06/10/15

I need help with a word problem I got slightly wrong
A village wants to build a community center that is projected to cost 1.2 million dollars. Cost per resident is increased by #3 as it is discovered that there are 225 fewer residents than when... more
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06/10/15

I need help Simplifying this expression
2j+6/ j2 -6j-27    i solved the whole thing and ended up with j= 9 (equal sign with a slash through it) but Ive learned there should be another value I'm very stuck on this and I need help
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06/10/15

can't figure out this matrix problem
A souvenir shop gave away small gifts valued at $5 for sales of $25-$74.99, medium gifts valued at $8 for sales $75 - $149.99, and large gifts valued at $12.50 for sales about $150. The store gave... more
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06/10/15

Rearranging formulae:
Make x the subject of these equations:1) 3x-w=vx+y2) 8-wx=vx+53) 5(wx-v)=7(x+v)4) y=x/x-75) y=x+7/x-56) y=a-9x/bx+8
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