Questions Asked on
May 12, 2007

advanced algebra quartic
leaning ladders a nasty quartic Two ladders leaning in opposite directionsbetween two walls.Each ladder touching the base of the opposite wall Ladders are 40 ft and 60 ft respt. cross at hy of 10 ft , h, what is the distance tween walls w ?
asked by fredd 
Electrochem
A baby's spoon with an area of 6.25 cm^2 is plated with silver from AgNO3 using a current of 2.00 A for two hours and 25 minutes. a) If the current efficiency is 82.0%, how many grams of silver are plated? b) What is the thickness of the silver plate
asked by Keith 
Chemistry
When we mix NaOH and H2SO4 we get the equation OH(aq) + H+(aq) > H2O(l) and if we mix H2CO3 and NaOH we get the equation 2OH(aq) + H2CO3 > 2H2O(l) + CO32(aq) Why aren't the two equations the same? ie only one mol of NaOH reacts in the first equation
asked by Fiona 
math
describe (in words) two different sets of people containing you as a member. describe (in words) the complement of each set. describe what people are not in either the orininal set or the complement set You might think of various categories that include
asked by Liam 
Calculus HELP plz
Find the area of the surface obtained by rotating the curve y=sqrt(4x) from x=0 to x=1 about the axis. about the xaxis. surface area= ⌠ 2pi * f(x)*sqrt[1 + (f'(x))^2] dx from a to b ⌡ it's been 45 years since I used that formula. I ended up with the
asked by jimmy 
math
The table shows the depth (d metres) of water in a harbour at certain times (t hours) after midnight on a particular day. Time t (hours) Depth d (m) 0 3.0 1 3.3 2 4.2 3 5.6 4 7.2 5 8.2 6 9.0 7 8.9 8 8.1 9 7.3 10 5.6 11 4.3 12 3.5 13 3.1 Use the regression
asked by grant 
French
I have been on for 3 hours and no one is posting or anything. Can anyone take a stab at answering the last question I posted? Please??????????????? Thank you for using the Jiskha Homework Help Forum. I don't know what time it is where you are but I just
asked by brie 
History
I'm doing a project on Medieval nights please help! How did chivalry reflect medieval culture especially religon? Its due on Monday and i still have HEAPS to do!!!!! Please help me! You mean Medieval knights, right? If you spell it wrong during a search
asked by Alice 
Math
I can't to get this problem. Perform the indicated operation 11 6/7 7 Can someone help me??? It's easier to perform the 117 first. 117 is 4. Now, take 4 of something. Cut one of them up into 7 pieces and take away 6 of the 7 pieces. What are you left
asked by Norma 
Science
Tereestrial plants, Aquatic Plants & Insectivorous Plants? Thank you for using the Jiskha Homework Help Forum. Here are some sites on your subject: 1. http://www.hondae.com/ 2. http://www.uky.edu/Ag/Horticulture/pls220/aquatics/aquatics.html 3.
asked by M Sandhya 
math
I never got the fractions, Determine the maximum and minimum values of the following set of numbers. 2,8,1/2,5/3,9/4,7,73/9 I think the answer is 73/9 and 1/2 am I right if not can anyone tell me what I am doing wrong?? change them all to have a
asked by Norma 
math
Which three options are true about motion in a straight line. A. A particle which moves at an increasing velocity has a constant acceleration. B. If two particles always have the same velocity as each other, their separation does not change. C. A particle
asked by clara 
mathematics logs
which three statements are true? a) if x= 10^4 then log 10 = 4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 2562log 10 a/log 10 b f)log 10 (ab)= log 10 a/log 10 b g) the gradient of the graph of y= 2x^x at x= 2 is 2e^e
asked by malcolm 
math
which three statements are true? a) if x= 10^4 then log 10 = 4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 2562log 10 a/log 10 b f)log 10 (ab)= log 10 a/log 10 b g) the gradient of the graph of y= 2x^x at x= 2 is 2e^e
asked by claire philips 
math help
Posted by grant on Saturday, May 12, 2007 at 9:20am. The table shows the depth (d metres) of water in a harbour at certain times (t hours) after midnight on a particular day. time t (hours) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 and the in the next column
asked by grant 
Electrochemistry
I have an electrochem based question. I'm trying to solve for E* based on a chart in my book. I know the equation for solving this is E*= E*ox + E*red. The chart in my book gives a list of reactions and a E*red value. My teacher told us that the greater,
asked by Keith 
Science
Why is it impossible to have an Arctic Circumpolar Current? http://www.whoi.edu/science/PO/arcticgroup/projects/proshjohnsontworegimes.pdf
asked by Erica 
norwalk
historical events of daoism IV History of Daoism Print this section Daoism gradually changed from the philosophy of a small number of sages to a widespread popular religion followed by numerous individual believers and by many groups of monks and lay
asked by jacqueline 
CHEMISTRY
Calculate Kp at 500 deg C for the reaction 4No2+6H2O 4NH3+5O2. The value for Kc at 500 deg C is equal to 0.456. Kc = KpRTdelta n where delta n = ngas products  ngas reactants
asked by Delli 
math
The table shows the depth (d metres) of water in a harbour at certain times (t hours) after midnight on a particular day. time t (hours) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 and the in the next column corresponding to the figures above is depth d (m) 3.0 3.3
asked by grant 
maths
which three statements are true? a) if x= 10^4 then log 10 = 4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 2562log 10 a/log 10 b f)log 10 (ab)= log 10 a/log 10 b g) the gradient of the graph of y= 2x^x at x= 2 is 2e^e
asked by claire philips 
maths
how do i solve the following equation? 4  x = 2  (3  2x) remove ( ) by distributing  sign 4x=23+2x then add 4 to both sides to get x = 4 + 2 3 + 2x then x = 5 +2x then add 2x to both sides x=5
asked by sarah 
maths
Sixty people were asked how many films they had seen in the past year. The results are shown in table 1. Table 1: number of films seen by a group of people during the past year No of film seen(x)0 1 2 3 4 5 6 7 8 N0 of people(f) 23 12 9 6 3 4 2 0 1 What
asked by roger 
math
consider the conditional statment if you brush your teeth regularly then you won't get cavities. under what circumstances will the sttement be false The statement will be false if other conditions exist that cause cavities. The statement will also be false
asked by Liam 
Punctuating Sentences
Without a doubt, cramming for the test. This is not a complete sentence. The phrase "cramming for the test" is either a gerund or praticipial phrase, but there's no subject or verb here. When you decide how you'll make this into a complete sentence, please
asked by Mae 
math
could somebody tell me the answer or order of operations to this calculation. 3cos(2 x 2) thanks. I assume you meant 3cos(2x²) pick your x square it multiply it by 2 take its cosine multiply by 3 press the = sign on your calculator after each step to
asked by r. giggs 
Math
I can't to get this problem. Perform the indicated operation 11 6/7 7 Can someone help me???
asked by Norma 
Science
Aquatic Birds their habitats & habits Thank you for using the Jiskha Homework Help Forum. Here are some sites for you: 1. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15093476&dopt=Abstract 2. (Broken Link Removed) 3.
asked by M Sandhya 
Math
Information about 3 Indian & 3 foreign mathematicians. You'll find information about dozens of mathematicians  from India and other places in the world  in these sites. http://wwwgroups.dcs.stand.ac.uk/~history/BirthplaceMaps/Countries/India.html
asked by M Sandhya 
math
The amounts of oil pumped from an oil well in each of the years 2001 to 2004 formed a geometric progression with common ratio 0.9. The amount pumped in 2001 was 100000 barrels. Calculate in which year the amount pumped will fall below 5000. The amounts of
asked by Rashida 
maths
Compass bearings of a carin are taken from two points A and B, 400 m apart, along a strsight northsouth path, A being due north of B. the bearings of the carin from A and B are 110 degrees and 80 degrees, respectively. choose the two options which give
asked by claire philips 
math
which 3 are correct a) if x= 10^4 then log10 x = 4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 2562log 10 16=0 f)log 10 (ab)= log 10 a/log 10 b g) the gradient of the graph of y= 2e^x at x= 2 is 2e^2 h) the gradient of
asked by grant 
astronomy
so basically Pluto is a planet? basically , yes. There is some controversy about this. Since this is not my area of expertise, I searched Google under the key words "Pluto planet" to get these possible sources:
asked by singh 
Biology
Frogs Question: What is it called when reproductive adults maintain larval characteristics? Thank you. http://en.wikipedia.org/wiki/Paedomorphosis
asked by Gerri 
psychology
List some common neurotransmitters and describe their effect on behavior The first two sites have a list of neurotransmitters and the effects. The other sites explain effects in detail. http://web.indstate.edu/thcme/mwking/nerves.html
asked by Anonymous 
maths
The ‘body mass index’ is used to find the body weight that is appropriate for a person’s height. It is calculated using the formula. I = W (I = W divided by H squared) H 2 Where I is the body mass, W is the person’s weight in kg, and H is the
asked by katie 
Emission Spectrum of hydrogen ...CHEM
Can someone please explain the emissiom spectrum of hydrogen? THose lines represent the energy released by the electron when going from one orbital (energy level) to a lower orbital. The difference of energy levels exactly corresponds to the energy in the
asked by Pet 
Chemistry
When asked to name all of the ions and molecules present in a 0.1 mol L1 solution of CH3COOH, why are there OH ions present if the equation is CH3COOH(aq) + H2O(l) > CH3COO(aq) + H3O+(aq) ? The water ionizes in such a manner that the product of the
asked by Fiona 
French
Could someone please explain to me verb inversion? I never get confused in French, but this verb inversion stuff is really confusing. It just seems so pointless! Please help, Thanks, brie Thank you for using the Jiskha Homework Help Forum. If you are doing
asked by brie