Tuesday
September 30, 2014

Posts by bridget


Total # Posts: 112

statistics
population has mean 53 and standard deviation 12. Calculate the standard deviation of x bar for a random sample of size 12.
August 18, 2014

Math
Thank you so much.
May 6, 2014

Math
If two dice are rolled, what is the probability that a total is showing more than four
May 6, 2014

Math
If two fair dice are rolled, what is the probability that a total of five shows?
May 6, 2014

Math
Thanks
May 6, 2014

Math
If two fair dice are rolled, what is the probability that a total of five shows?
May 6, 2014

Math
Thanks. I got it. The answer is 3,628,800
May 6, 2014

Math
Suppose that we wish to seat ten people, 5 men and 5 women, in a row of ten chairs. In how many ways can we seat the people with no restrictions?
May 6, 2014

life science,maths lit,geography,tourism
is it possible 4 me 2bcum a social worker?
April 30, 2014

math
1. 17x^2+6x-6 2. 3x^3+9x^2+18x did you get the same?
April 13, 2014

math
If A=3x+4 and B=x^2+2 and C=x^2+3x-2, find the following: 1. AC+B 2. (A+B)(B-C) 3. ABC
April 13, 2014

Chemistry
The cell diagram for the lead-acid cell that is used in automobile and truck batteries is Pb(s) l PbSO4 (s) l H2SO4 (aq) l PbO2(s), PbSO4(s) l Pb (s) where the comma between PbO2 (s) and PbSO4 (s) denotes a heterogeneous mixture of the two solids and the right-hand lead ...
February 23, 2014

chemistry
My teacher went over it really fast and now I'm just really confused about how to do my homework =( Calculate the cell potential for the following reaction as written at 25C, given that [Cr2+] = 0.821 M and [Ni2+] = 0.0190 M. Cr(s) + Ni2+ (aq) <==>Cr2+ (aq) + Ni(s) ...
February 23, 2014

Chemistry
Never mind, it's -.744V I figured it out!
February 23, 2014

Chemistry
Given these standard reduction potentials at 25 C 1. Cr3+ + e- ===> Cr2+ E1=-0.407 V 2. Cr2+ + 2e- ===> Cr(s) E2=-0.913 V determine the standard reduction potential at 25C for the half-reaction equation Cr3+ + 3e- ===> Cr(s) E=? When I tried, I got 1.08V and I honesty...
February 23, 2014

Art
Eugene Delacroix's Liberty leading the people commemorated?
January 31, 2014

math
5 ----- 8+root7 please help me simplify
December 23, 2013

algebra
thank you.
December 23, 2013

Math
Determine the equation of g(x) that results from translating the function f(x) = (x + 10)^2 to the right 12 units.
December 16, 2013

Math
Determine the equation of g(x) that results from translating the function f(x) = x2 + 5 upward 6 units.
December 16, 2013

Math
Determine the equation of g(x) that results from translating the function f(x) = x2 + 5 upward 6 units.
December 16, 2013

math
Find the slope of the lines that are (a) parallel lines (b) perpendicular lines to the lines passing through the pair of points (3, 4)(2,-1)
November 4, 2013

math
Slope is 5 Parallel is 5 or 1/5 Perpendicular is -5
November 4, 2013

math
Find the slope of the lines that are (a) parallel lines (b) perpendicular lines to the lines passing through the pair of points (3, 4)(2,-1)
November 4, 2013

math
Write equation in Standard Form Ax + By =C (-9, 7)(0, 3)
November 4, 2013

math
Thanks
November 4, 2013

math
Write an equation of the line with the given slope and containing given points. Slope intercept form Slope 4 through (-3, 3)
November 4, 2013

math
1.graph equation y=4/5x 2.graph linear equation y=-1 3.find the slope of line -2x - 3y = 5 a. slope is b. slope is undefined?
October 15, 2013

dma040
Police officer to Speedzilla he was speeding at or above 120 miles per hour. Write an inequality to express Speedzilla speed, then show in graph, write in set notation.
October 7, 2013

dma040
Solve for x. 13/14x + 8/7 = 6/7x
October 7, 2013

dma040
Explain which terms are alike 7xy -9x^2 -15xy^2 -14xy
October 7, 2013

Chemistry
Hi, This is a challenge question for my intro chemistry class and I'd really like to do it. Its in 2 parts. 1. Consider a 2790-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the ...
October 1, 2013

Dma 040
v =1/3ah, solve for h
September 30, 2013

Dma 040
V=1/3ah, V=21,h=3, solve
September 28, 2013

Dma 040
Thanx Jai...
September 27, 2013

Dma 040
V=1/3ah, V=21,h=3, solve
September 27, 2013

Dma 040
V=1/3ah, V=21,h=3, solve
September 27, 2013

Dma 040
Lenth of a rectangle is 7ft longer than twice the width. If the rooms perimeter is 158ft, whay are the rooms dimensions? Width Length
September 27, 2013

dma040
v=1/3ah solve for h
September 27, 2013

dma040
A number subtracted from 13 is the quotient of -34and 2. Find the number
September 27, 2013

Chemistry
Please help me out! Gas law homework! How many liters of HCl (g) at STP can be produced from 5.44 g of Cl2 and excess H2 according to the following equation? H2 (g) + Cl2 (g) --> 2 HCl (g) Thank you so much in advance.
May 28, 2013

Chemu
Hi! I need help with my Chem homework. "When acetylene, C2H2, burns, how many liters of O2 at STp are used for every mole of acetylene burned?" (Balanced equation: 2 C2H2 + 5 O2 --> 4 CO2 + 2 H2O)
May 28, 2013

Biology
Meh, it's not really hard if you have average memory strength and good note-taking skills. It also depends on how easy-going and clear your teacher is.
April 29, 2013

physics
what is the magnitude of the resultant of a 6.0n force acting vertically upward and a 4.0n force acting horizontally
January 1, 2013

ap chemistry
Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2CO2 + O2 yields 2CO2 Delta H for this reaction is -566 kJ/mol run. What is the delta H for CO? 1). +270 kJ/mol 2). -110 kJ/mol 3). +65 kJ/mol 4). -405 kJ/mol 5). -65 kJ/mol 6). -182 kJ/mol 7...
October 18, 2012

ap chemistry ! i am so lost
how much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 5.8 liters against a constant external pressure of 0.0100 atm? answer in units of J
October 18, 2012

ap chemistry ! i am so lost
how much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 5.8 liters against a constant external pressure of 0.0100 atm? answer in units of J
October 18, 2012

math
suppose that you roll a pair of 8-sided dice total of 51 times. what is the probability that you will get a sum of 5 at least 3 times
September 6, 2012

algerabra 1
how do you find the equation for the line containg the side opposite the side containg the first two vertices?
June 28, 2012

algerabra 1
how do you find the equation for the line containg the side opposite the side containg the first two vertices?
June 28, 2012

English
2. If you ask me, there's no hobby like fishing.
May 2, 2012

English
In which sentence is an a homonym used correctly? 1. Karen's new dog had flees. 2. If you ask me , there's no hobby like fishing. 3. How many ours do we have to wait. 4. We had chocolate ice cream for desert.
May 2, 2012

MATH##$$&&^^**
A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 490 college students showed that 33% of them had, or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval.
April 20, 2012

MATH
A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following a. What scores fall between –1 and +1 standard deviation? b. What percent of all scores fall between –1 and +1 standard deviation? c. What score falls at +2 standard ...
April 3, 2012

math
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?
April 2, 2012

Math
Suppose there are 400 students in your school class. What class rank is the 20th percentile?
March 28, 2012

geometry
Need to find the perimeter in feet... The width is 35ft and 5in The length is 10ft and 3in Need to write the answer in feet... If there is anybody that can point me in the right direction.. I know I have to convert in. into feet.. and 12in= 1 foot
December 7, 2011

geometry
Ms. Sue, I am not an expert but I know that the numbers all have to be on one side and the letter on the other Ex. 43+114+X=180 114+43=157 157+X=180 Do the opposite operation to get letter alone so it would be -157 on both sides.. 157+X=180 -157+X=180-157 X=23 Hope that helps
December 7, 2011

business
A women has $500,000 invested in two rental properties. One yields an annual return of 14% on her investment, and the other returns 9% per year on her investment. Her total annual return from the two investments is $52,000. How much is invested at each return?
September 20, 2011

Geography
Are there 7 countries in Central America?
September 19, 2011

cognitive and langauge del.
interactionist
August 11, 2011

Chem 112
Calculate the pH of a buffer solution prepared by dissolving 0.12 mole of cyanic acid, HCNO and 0.65 mole of sodium cyanate, NaCNO in enough water to make 1.0 liter of solution. [Ka(HCNO) = 2.0 × 10-4] I know that this question has something to do with turning moles into...
March 21, 2011

chemistry
15ml of 0.325M NaOH is delivered into 35ml HOBr solution of unknown concentration.The pH of the final solution is 7.48. Ka for HOBr is 2.0 x 10-9at 25C. Find the number of moles of OBr- and HOBr in the final solution.
February 24, 2011

math
how can i find the GCF of a pair of numbers ? (ie 11 18, 8 6)
January 3, 2011

4th grade
jmk
November 30, 2010

physics
A cowboy at a ranch fills a water trough that is 1.5 meters long, 65 cm wide and 45 cm deep. He uses a hose having a diameter of 2 cm, and the water emerges from the hose at 1.5 m/s. How long does it take the cowboy to fill the trough?
November 11, 2010

Math
solve: (square root of 3) sin(theta) + cos(theta) = 1 Thanks! :)
October 21, 2010

10th grade
The ultimate goal of all the explorations launched by the Europeans from the fourteenth century onward was
October 14, 2010

math
what are situation and solution equations? example question is: People in a marching band stand in 8 equal rows. There are 56 people in the band. How many people are in each row?
October 13, 2010

algebra
need to write in paragraph form how to solve the expression 161/2
September 25, 2010

math
2-2A #2 Rewrite the following using mathematical symbols: a. P is equal to the set containing a, b, c, and d. b. The set consisting of the elements 1 and 2 is a proper subset of {1, 2, 3, 4} c. The set consisting of the elements 0 and 1 is not a subset of {1, 2, 3, 4} d. 0 is ...
July 12, 2010

math
how to know exponent ?
July 12, 2010

math
yes that does make sense, thanks a lot
June 26, 2010

math
16/4=4 28/4=7 how would i write this out to answer the question
June 26, 2010

math
16min 28s/4
June 26, 2010

math
I get $45.00 is this correct?
June 26, 2010

math
Bob is framing a rectangular picture 9 in long and 6 in wide. If the framing material costs $1.50 per inch, what will be the total cost of the frame?
June 26, 2010

Finance
I am trying to figure out how to compare long-and short-term financingand then describe situations in which each type of financing would be used.
May 21, 2010

Economics
o Which government bodies influence national fiscal policies that potentially affect the housing market? I am thinking the federal reserve but I am really unsure about that answer.
April 6, 2010

vocab
write a sentences for brother's and brothers
March 31, 2010

economics
How can you use information about the business cycle when making a decision about a large purchase?
March 31, 2010

Math
1. The School Action Society asked its members how many hours they had worked during the previous week in part-time jobs. The following data lists the number of hours spent working during the previous week. 6 6 6 4 6 6 9 8 6 3 7 6 6 7 6 6 7 6 6 8 6 7 8 4 a. From these data ...
February 13, 2010

Statistics
Sample salaries (in dollars) of high school teachers are listed. Find the sample mean and standard deviation of the data. 49,632 54,619 58,298 48,250 51,842 50,875 43,219 49,924
February 13, 2010

business law
Beta Company arranges to have Carrier Corporation transport five hundred DVD players from New York to California. Dan is Carrier's driver. Beta will suffer the loss if Carrier fails to deliver the players on time because?
October 22, 2009

business
Beta Company arranges to have Carrier Corporation transport five hundred DVD players from New York to California. Dan is Carrier's driver. Beta will suffer the loss if Carrier fails to deliver the players on time because
October 19, 2009

Chemistry 101
How do I find the mass % of Oxygen in sodium oxide?
September 26, 2009

legal studies
Using legislation evaluate the effectiveness of the law in protecting landlords and tenants in australia.
June 16, 2009

8th Grade Algebra
Multiply. 1) (3t^2 - 2t - 4) * (5t + 9) Writing. 1) Explain why the product of a quadratic polynomial and a linear polynomial must be a cubic polynomial.
May 5, 2009

Com 220 creative writing
Quoting, Summarizing and paraphrasing sources for sexual assaul base on college dringking
February 1, 2009

math
4. y/2 + 5 = -12 (use the inverse operation to get rid of the 5) y/2+5(-5)= -12 (-5) y/2=-17 (isolate the variable, aka, multiply both sides by 2, to get your answer of...) y= -34
October 12, 2008

Algebra 1
ok, thank you sooo much!!! :)
October 12, 2008

Algebra 1
oooh!!! ok, thank you!!! so then i would get .1d - .4 = .05d + .35 + .4 .1d - .4 = .05d + .75 .05d - .4 = .75 .05d = 1.15 d = 23 right???
October 12, 2008

Algebra 1
would that be the same as .05(d+7)=(d-4).1 ?
October 12, 2008

Algebra 1
so im not that good with word problems so... here it goes. Nadine has 7 more nickles than Delano has dimes. If Delano gives Nadine 4 of his dimes, then Delano will have the same amountof money as Nadine. How much money do they have together, assuming Nadine only has nickles ...
October 12, 2008

math
6-(8*5)-28 (order of operations) 6-40-28= -34-28= -62
October 12, 2008

history
any good sites that i could get a list of early civilizations from about 1000 to 1492 that would include locations and dates they flourished? any help at all with this will be MUCH appreciated, thanks!
August 14, 2008

math
how do i factorise a)9a^2-b^2 b)3x-8y-4xy+6
April 15, 2008

Writing
umm, k, i think i can help, unless someone else pops up and u wanna take their advice...r u thinking kindda a fiction story, like a day in the life of cereal? or maybe a real-life story where the main center piece is cereal? cause i think i have a few ideas...
December 19, 2007

creative writing- please help
hmm..i don't know if there is a wrong or right answer...i guess u might know that or not, but maybe u have to kindda use ur opinion and how that letter makes u feel or what u think of when u see or hear that letter...this might not be the kind of answer you need for the ...
August 29, 2007

Algebra, help please!!!
number 3 looks like it should be t x 2/12 (t times 2 divided by 12)...i think so
August 28, 2007

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