Questions Asked on
August 25, 2012

statistics/ Help!thanks!
The producers of a new toothpaste claim that it prevents more cavities than other brands of toothpaste. A random sample of 60 people use the new toothpaste for 6 months. The mean number of cavities at their next check up is 1.5. In the general population
asked by StudentD 
Chemistry
Suppose you have a strong peak at 2230 cm–1. What is the wavelength of the radiation that was absorbed?
asked by Jen 
math
How many edges are in K15, the complete graph with 15 vertices. Any help would be appreciated, thanks.
asked by Meredith 
Chemistry IR Spectroscopy
Sort the compounds: conjugated or non conjugated. but2enoic acid butanoic acid hex4en3one hexan3one
asked by Jen 
accounting
A company purchased a machine on January 1 of the current year for $750,000. Calculate the annual depreciation expense for each year of the machine's life (estimated at 5 years or 20,000 hours, with a salvage value of $75,000). During the machine's 5year
asked by Dan 
math (statistics)
the set of integers between 1 and 50 divisible by 8
asked by Anonymous 
physics
Hi, ive been trying to get this problem for a couple of days now but i have no idea of what to do. A very slippery block of ice slides down a smooth ramp tilted at angle pheta. a)The ice is released from rest at vertical height h above the bottom of the
asked by bobby 
Physics
Standing on the top ledge of a 55 m high building you throw a ball straight up with an initial speed of 45 m/s. How long to the nearest second, does it take to hit the ground? I got 10 seconds for the first question. How do I go about answering this one?
asked by Anonymous 
Science
I not sure what formula to use for KE or how to find the mass for the equation. Water is flowing through a 2inch diameter pipe with a velocity of 3 ft/s. Part A What is the kinetic energy of the water in (ft)(lbf)/(lbm)? (lbf) pound force (lbm) pound mass
asked by Angel 
physics
a transformer has 200 turns in its primary coil, the potential difference across the transformer is 220V needs to operate an electrical instrument uses a 110 volts. the number of turns in its secondary coil is: a) 100 turns b) 200 turns c) 110 turns d) 220
asked by help physics 
physics
A tortoise can run with a speed of 11.5 cm/s, and a hare can run 21.4 times as fast. In a race, they both start at the same time, but the hare stops to rest for 126 seconds. The tortoise wins by a shell (18.3 cm). How long does the race take? What is the
asked by Simone 
Stor 155
a data set lists apartments available for students to rent. Information provided includes the monthly rent, whether or not cable is included free of charge, whether or not pets are allowed, the number of bedrooms, and the distance to the campus. Describe
asked by ami 
College Math
A club consists of 16 men and 19 women. In how many ways can they choose a president, vice president, treasurer, and secretary, along with an advisory committee of six people? (Round the answer to five decimal places.) The Answer is blank x 10 to the 11th
asked by Jessica 
chemistry
What hybrid orbitals are used by nitrogen and phosphorous atoms in the following species? (a) NH3, (b) PCl4+, (c) H2NNH2
asked by sri harsha 
math (statistics)
an experiment consistbnof tossing a die and then flipping a coin once if the number on the die is even. If the number on the die is odd, the coin is flipped twice. Using the notation 4H, for example to denote an event that die comes up 4 and then the coin
asked by Anonymous 
College Math
Find the amount of interest and the monthly payment for the loan. Purchase a living room set for $3,400 at 12% addon interest for 5 years. (Round your monthly payment to the nearest cent.)
asked by Jessica 
visual basic 2010
Assuming the ocean's level is currently rising at about 1.5 millimeters per year, create an application that displays the number of millimeters that the ocean will have risen each year for the next 10 years.
asked by alisa 
Chemistry
The total volume of seawater is 1.5 times 10 to the twenty first power L. Assume that seawater contains 3.1 percent sodium chloride by mass and that it's density is 1.03 g/mL. Calculate the total mass of sodium chloride in kilograms and in tons. ( 1 ton =
asked by Brooklynn 
physics
On your wedding day your lover gives you a gold ring of mass 3.68 g. 54 years later its mass is 3.28 g. On the average how many atoms were abrated from the ring during each second of your marriage? The atomic mass of gold is 197 u.
asked by Simone 
science
when a zinc is placed in a copper(ii)nitrate solution,the strip becomes coated with copper.write down the oxidation half reaction for the reaction that takes place.
asked by BONNY 
Statistics
An instructor has graded 25 exam papers submitted by students in a class of 26 students, and the average so far is 71. (The maximum possible score is 100.) A) To raise the class average by 1 point, the score on the last paper has to be:
asked by Bob 
Please help! Chemistry
In a fume cupboard molten lead(ii) bromide is electrolysed using graphite electrodes. Write halfequations for the reaction at the (i).cathode (ii). Anode (iii). Overall equation (states required).
asked by Jeconiah 
Please help! Chemistry
In a fume cupboard molten lead(ii) bromide is electrolysed using graphite electrodes. Write halfequations for the reaction at the (i).cathode (ii). Anode (iii). Overall equation (states required).
asked by Jeconiah 
Physics
a body (A) is moving with a speed of 250m/s in the positive xdirection, collides with body (B) initially at rest and having the same mass as (A). after collision the speed of body (A) is 100m/s making 30 degree with the horizontal. the speed and direction
asked by Help, Thankyou 
Chemistry
An aqueus solution of sodium mitrate(NaNO3) contains 0.85 grams of sodium nitrate and its concentration is 0.1mol L^1. What is the volume. in millilitres, of the sodium nitrate solution?
asked by Jeconiah 
math
STATISTICS The mean score for samantha's first s algebra quizzes was 88. If she scored a 95 on her next quiz, what will her mean score be for all 7 quizzes?
asked by keisha 
accounts
The differences between the book basis and tax basis of the assets and liabilities of Castle Corporation at the end of 2008 are presented below. It is estimated that the litigation liability will be settled in 2009. The difference in accounts receivable
asked by accounts 
English
1. I cleaned and ironed my little brother's clothes and sold them all. (Does the sentence mean "I" washed the clothes? Or without washing clothes, did I clean the state of the clothes?) 2. Last Saturday, I sold some of my mom's old dresses. For the whold
asked by rfvv 
geometry
I"m stuck on this question "Rays PQ and QR ae perpendicular.Point S lies in the interior of angle PQR.If angle PQS!=4+7a and angle SQR=9+4a,find angle PQS and angle SQR. PLEASE HELP!!!!
asked by Rick 
ENGLISH
Give two examples of each of the following elements of poetry from the poems you have read in Units 4, 5, and 6
asked by Give two examples of each of the following element 
Chemistry
Balancing Equation Al2C3O3 + H3PO4 > AlPO4 + CO2 + H2O
asked by Derp 
math
16^225/5+6(3)4= i having trouble,been on this problem for a while need help and understanding of how the answer 323 when i keep coming up with a lower number. hhelp
asked by ^^^^kesha 
math
From a survey of 100 college students, a marketing research company found that 70 students owned iPhones, 45 owned cars, and 40 owned both cars and iPhones. (a) How many students owned either a car or an iPhone (but not both)? 1 students (b) How many
asked by Anonymous 
math
The campus vets club is having a raffle and is selling 2,800 tickets. If the people on your floor of the dorm bought 588 of those tickets, what is the probability that someone on your floor will hold the winning ticket? (Enter your answer as a decimal.) 1
asked by Anonymous 
math
write inequality of the form xa
asked by rolan 
math
find the derivatives, dy/dx for the folowing function : y=ln(cos(0.5)+(sin(x^2+3))^1/3)
asked by deel 
Ethics
THe gm of a software company is in the process of constructing a new facility in a country. THe gm has a manager of native origin acting as liaison between the company and government officials. THe new facility requires some permits and licenses.
asked by Lori 
Physic
One gallon of paint (3.79 Liters) covers an area of 26.0 m2. What is the thickness (in mm) of the fresh paint on the wall. Please help, I have no idea where to start thank you!
asked by Kenny 
medical
medical billing DX for head pain possible cyst
asked by Anonymous 
math
Use Venn diagrams to check the validity of the argument. All bachelors are handsome. Some bachelors do not drink lemonade. Therefore, some handsome men do not drink lemonade. 1 Select valid not valid All squares are rectangles. All rectangles are
asked by Anonymous 
geometry
I'm having a hard time with this question: "AB has endpoints A(n,4n) and B(3n,6n). Which of the following is true? A. AB=4n B. The midpoint of AB is (2n,2n). C. AB=n√8 D. The midpoint of AB is (4n,10n)". PLEASE HELP!!!!!
asked by Rick 
Dr. Bob please help :)
Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: butanol but2enal heptan3one hept4en3one cinnamaldehyde
asked by Alyssa 
math
annie,betty,Cathy and Danial are going to stand on a row for taking pictures. How many ways can they stand?
asked by Em 
Info literacy
Which of the following sets of Dewey Decimal call numbers is in the correct order? A. 010.1 ABR, 004.15 KWA, 100.01 PRO, 100.1 BLU B. 004.15 KWA, 010.1 ABR, 100.01 PRO, 100.1 BLU C. 100.1 BLU, 010.1 ABR, 004.15 KWA, 100.01 PRO D. 100.01 PRO, 100.1 BLU,
asked by Macy 
geometry
I need help with this question. "The measure of the supplement of an angle is 60 less than three times the measure of the complement of the angle.find the measure of the angle". Please help!!!!
asked by Rick 
Physics
can you please help me in telling me the uses of each electromagnet wave? like explain each briefly and what are they used for? thankyou
asked by wave 
math
Determine the down payment and the amount to be financed for each home described below. (a) $360,360; 10% down The down payment is $ 1 The amount to be financed is $ 2 (b) $960,000; 20% down The down payment is $ 3 The amount to be financed is $ 4 Don't
asked by Anonymous 
chem
what is the symbol for the element that has 78 protons 76 electrons 117 neutrons and a +2 net charge? i thought it was ^195Os^+2 but that is wrong. Thanks for the help!
asked by sara 
Science
Why is the energy released to break a triple bond not three times the energy to break a single bond?
asked by Marie 
math
round 0.8394263 to the nearest hundredthousndth. Add the fractions 2/3,3/8 and 5/12 reduce to lowest terms subtract the fraction 7 4/ from 18 6/15 reduce answer in lowet terms
asked by no name 
Please help. Chemistry
What is the MAIN reason for storing sodium metal in mineral oils?
asked by Jeconiah 
algebra
x 2/316x 1/3 +64=0
asked by Nett 
math
let theta be an angle in quadrant three such that tan theta =6/5
asked by brooke 
12th Grade world history
With regards to the mining and agriculture industry, in the nineteenth century, which of the following statements is false? A. Large companies tried to be paternalistic to keep workers from rebelling B. Specialization became more common C. Private
asked by Veronica 
Physiology
Palpation of the left axillary region demonstrated palpable lymph nodes extending into the ipsilateral anterior thorax. ( Does ipsilateral refer to the axillary ( armpit), meaning the anterior thorax is on the same side as the axillary (left)? ( Must be
asked by Sarah 
Math
A two population model is satisfied by a system of differential equations given by, V(x,y) = (ax,by)^T The general solution of the system of differential equations has x = áe^at for some constant á. The parameter t can be eliminated and we can express y
asked by Anonymous 
physics
what are convex lenses?
asked by help 
math
In a recent survey of 100 women, the following information was gathered. 39 use shampoo A. 42 use shampoo B. 48 use shampoo C. 14 use shampoos A and B. 15 use shampoos A and C. 12 use shampoos B and C. 8 use all three. Use the figure to answer the question
asked by Anonymous 
chemistry
If 0.7825 g of solid Al and 450. mL of 0.2069 M aqueous Cl are reacted stoichiometrically according to the equation, what mass (g) of solid Al remained? 3 CuCl2(aq) + 2 Al(s) ¨ 3 Cu + 2 AlCl3(aq)
asked by Ananth 
Physics
The relative density of mercury is 13.6. Find the ratio of the mass of mercury of a certain volume to that of water having tem times the volume of mercury
asked by Prithvi 
English
In addition to the Center for Writing Excellence, what other writing tools might you rely on for revising a research paper?
asked by Devin Matthews 
Math
Given the formula Xc=1/6.28fC, find C if Xc =500 and f=2000. What are the rules that take me from 500/1 = 1/6.28*2000*C to the next step of: C=1*1/500*6.28*2000 ?
asked by Tim 
Structured English Immersion
How can the continuum of strategies be used inappropriately in the classroom?
asked by Amanda 
math(ODE)
there are 3 linearly independent solutions of the DE t^3.y"'+3t^2.y"6ty'+6y=0 of the form t^p, find the possible values of p
asked by mo 
Chem
Sort the pairs of related compounds by their carbonyl stretching frequencies in cm–1. (There will be three compounds per bin.) Bin # 1: Slightly higher Bin #2: Slightly lower Compounds: butanol but2enal heptan3one hept4en3one cinnamaldehyde
asked by Alyssa 
math
In a restaurant, a man ordered soup for $3, an appetizer for $4.25 dinner for 17.90,a beverage for $1.50, and dessert for $3.75. He left the server a 15% tip. what was the totl cost of the man's meal, including the tip?
asked by no name 
economics
what are some mesoeconomics variables/indicators
asked by nikki 
science
heat energy is measured in unites of
asked by diane 
speech
I need help with where to look for an answer to this question: That no people can see the same thing because the statement is selfdiscrediting, if the statement were true the person making the statement would have no way of knowing that it is true since
asked by Desieree 
prinicples of management
Scenario: Assume you are the ownerdriver of a truck, which transports vegetables overnight from the farmers in Florida to the markets in Atlanta. On the way back you haul whatever goods need transporting in the opposite direction. You have five employees
asked by kim 
Please help!! Chemistry
Ethanol is produced by the action of yeast (catalyst) on sugar cane juice. (1).What is specific name of this reaction? (2.) Write a simple word equation of this reaction.
asked by Jeconiah 
Please help!! Chemistry
Ethanol is produced by the action of yeast (catalyst) on sugar cane juice. (1).What is specific name of this reaction? (2.) Write a simple word equation of this reaction.
asked by Jeconiah 
math
Determine the comparable interest rate for a $50,000 loan when the quoted information is 11.8% + 0.5 pt + $300. (Round your answer to two decimal places.) 1 % i came up with the answer 8905%
asked by Anonymous 
math (statistics)
A costumer has to buy a cell phone from an appliance store with 8 different brands. Each brand is available in 5 different colors, and 7 origins. how many choices can the sales lady offer the costumer?
asked by Anonymous 
Maths
Solve this using elimination method: 4x3y=4
asked by Jeconiah 
math (statistics)
how many 4 digit number can be formed from the digits 2,3,5,,6,7,8 if: a.)each digit be only used once b) how many are even? c) how many are odd? d) how many are greater than 25000?
asked by Anonymous 
statistics
7. (TCO 6) Find P(11 < x < 16) when mu = 15 and sigma = 3. (Points : 3)
asked by Anonymous 
math
3+2*3 to 4th power*5. my answer is 2025. I was told i was wrong, please help.
asked by ^^^^kesha 
physics
if two waves mix while moving, will one delay the other? a) yes b) no c) sometimes d) only for sound waves
asked by hanan needs you 
physics
how to find the tension in a rope when we know that the weight of the body attached to the rope is 50 newton? if there is a formula for that can you please tell thankyou
asked by hanan needs you 
College Math
Evaluate the expression. (8 7) however the () should cover both numbers. Please explain answer if poss.
asked by Jessica 
Physiology
The patient reports numbness and tingling in the left lumber area and pain in the contralateral femoral region. ( not sure how to rewrite statement into simpler terms)
asked by Sarah 
statistics
how many ounces of butt woulld one have used if you use 81% out of countainer of 1.45kg of butter
asked by Anonymous 
math
Determine the comparable interest rate for a $50,000 loan when the quoted information is 11.8% + 0.5 pt + $300. (Round your answer to two decimal places.) 1 % I don't understand how to do this problem
asked by Anonymous 
physics
An object is moving at constant velocity of 20m/s for 10 seconds. Find the acceleration during the 10 seconds interval?
asked by Veronica 
moral science
chart work for effects of pure and impure water
asked by shree 
accounting
The City of Allentown recently received a donation of two items: A letter written in 1820 valued at $24,000 from James Allen and 1920 painting of the town's city hall, painting by same artist sold recently for $4,000.How do I do a journal capitalizing
asked by Lynda 
math
complete the square 16x12y=4y^2+1
asked by Tim 
math
How do I convert 16ft in .58 sec to mph
asked by Thomas