Sunday

April 19, 2015

April 19, 2015

Total # Posts: 3,385

**Calculus **

Suppose a ball is thrown straight up into the air, and the height of the ball above the ground is given by the function h(t) = 6 + 37t – 16t2, where h is in feet and t is in seconds. At what time t does the ball stop going up and start returning to earth?
*October 17, 2014*

**Calculus **

The population of a colony of bacteria is modeled by the function p(x)=50(e^-x - e^-x^2)+10 ,for 0 ≤ x, where population P is in thousands, x is in hours, and x = 0 corresponds to the moment of introduction of a certain chemical into the colony's environment. At ...
*October 16, 2014*

**Calculus **

The population of a colony of bacteria is modeled by the function p(x)=50(e^-x - e^-x^2)+10 , for 0 ≤ x, where population P is in thousands, x is in hours, and x = 0 corresponds to the moment of introduction of a certain chemical into the colony's environment. At ...
*October 16, 2014*

**Calculus..**

Thanks :)
*October 16, 2014*

**Calculus..**

Two particles are moving in straight lines. The displacement (meters) of particle 1 is given by the function s(t)= cos(4x), where t is in seconds. The displacement (meters) of particle 2 is given by the function s(t)= t^3/3-t^2/2 +2(t) , where t is in seconds. Find the first ...
*October 16, 2014*

**Physics**

I don't know that's why I'm here
*October 15, 2014*

**Chemistry**

Do you expect CaCl(s) to be stable if the 1st ionization energy of Calcium is approx. 590 kj/mol, the Lattice Energy is approx 700 kj/mol and the total change in enthalpy is -36? Why?
*October 14, 2014*

**physics**

Thank you!
*October 8, 2014*

**physics**

In a traction setup for a broken bone, with pulleys and rope available, how might we be able to increase the force along the femur using the same weight?
*October 8, 2014*

**General Psychology **

Which of the following is a stimulant? Alcohol LSD Heroin Mescaline Nicotine
*October 8, 2014*

**physics**

A 35.9 kg child starting from rest slides down a water slide with a vertical height of 20.3 m. (Neglect friction.)What is the child speed half way down
*October 7, 2014*

**College Alg**

The revenue and cost equations for a product are R=x (50-0.002x) and C= 12x+ 150000. Where R and C are measured in dollars and x represents the number of units sold. How many units must be sold to get a profit of at least 1,650,000
*October 1, 2014*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 30, 2014*

**math**

ann takes a taxi at 2.10 per mile and she gives the driver a 5.00 tip she spend a total of 49.10 write an equation to represent total cost in terms of distance
*September 22, 2014*

**health care administration**

I need to write a weekly overview for my class. I have tried to Google but I keep asking it wrong. Any ideas on how to see an example of a overview of the class? Thank you Mary
*September 19, 2014*

**physical science**

Two 3.4 kg physical science textbooks on a bookshelf are 0.25 m apart. What is the magnitude of the gravitational attraction between the books?
*September 19, 2014*

**math**

Estimate 540943 + 382093= 923036
*September 19, 2014*

**math 4th grade**

Find two numbers the exact answer is between 3x567
*September 18, 2014*

**Physics**

Eileen, Jackie, and Kathryn needed to find the difference between two angles A1 and A2, that they had drawn on a diagram: B = A1+A2 They then had to find the cosine of B. Jackie measured A1 to be 50° and A2 to be 3°. But their pencil was kind of dull, so the lines they...
*September 17, 2014*

**algebra**

the water ina beaker has of18g electeicity is passed thought the water for two hours afterward the water has a mass of only 16g what happen to the missing mass?
*September 17, 2014*

**health care administration**

I need some advice on what are some health care products. The only thing I come up with is Q-tips and liquid bandage. Any ideas? The assignment is how the four P's influences the success of the product. I know how to do this.
*September 16, 2014*

**Chemistry please help**

thank you so much, yes the site is helpful
*September 11, 2014*

**Chemistry please help **

Complete each calculation. Express your answer to the correct number of significant digits. a)4.02mL + 3.76mL +0.95mL b)(2.7 x 10^2m) x (4.23 x 10^2m) c)5092kg divided by 23L d) 2-6.3 + 6-7 e)(6.853 x 10^3L) + (5.40 x 10^3mL) f)(572.3g + 794.1g) divided (24mL + 52mL) My ...
*September 11, 2014*

**Physics**

Two cars, A and B, travel in a straight line. The distance of A from the starting point is given as a function of time by xA(t)=αt+βt^2, with α=2.60m/s and β=1.20m/s^2. The distance of B from the starting point is xB(t)=γt^2−δt^3, with γ...
*September 7, 2014*

**stats**

what are the mean and standard error when using central limit theorem for dichotomous variable
*August 28, 2014*

**Math**

Suppose that y varies inversely as t he cube of x. If y is 1/2 when x is 2 , find the constant of variation and variation equation
*August 28, 2014*

**Th**

the area of a regular polygon varies jointly as its apothem and its perimeter. express the area in terms pf apothem a and the perimeter p
*August 28, 2014*

**math**

I have a nickel. dime and a quarter, the dime is in the middle, how do I move the dime from center wihtout touching it. I would simply slide the nickel to the back
*August 26, 2014*

**math**

I agree
*August 26, 2014*

**math**

The cost for class trip is $5 per student plus$100 for the bus. Input(x) rule output(x) 18 22 24 30
*August 26, 2014*

**math**

How many possible license plates can be made with 4 letters followed by 4 numbers and must start with the letter C
*August 26, 2014*

**business**

Wallace Inc., a developer of radiology equipment, has stock outstanding as follows: 30,000 shares of cumulative preferred 2% stock, $90 par and 125,000 shares of $10 par common. During its first four years of operations, the following amounts were distributed as dividends: ...
*August 25, 2014*

**math**

50 in 100 and 30 in 90
*August 18, 2014*

**psychology**

1 what does peter singer say about history liberation movements? 2 The philosopher,John Stuart mill recognized the follow as a potential problem for utilitarianism what is peter point about performing vivisection on mentally health disabled human infants?
*August 16, 2014*

**Math**

Adrienne had a party at a local bowling alley. She spent seventy-five dollars for the lane and five dollars per person for shoes. Let c be the total cost of the lane and shoes, and let f be the number of friends at her party. Write an equation to represent the problem. Which ...
*August 12, 2014*

**math**

For the car loan described, give the following information. A newspaper advertisement offers a $4,500 used car for nothing down and 36 easy monthly payments of $157.62. (a) amount to be paid
*August 5, 2014*

**Public Health**

The assignment What is a public health agency that affects your workplace or your health care provider. My question: Where can I find some names to do my work? I know about the FDA and CDC and the Department of disabilities. Thank You Mary
*August 1, 2014*

**Calculus**

Determine whether Ax = lnx/(sqrt x) is convergent
*July 31, 2014*

**english**

Freud believed the purpose of dreams is to consolidate memories and new learning. sort through possible solutions to everyday problems. fulfill wishes. discard unnecessary information. reconcile urges.
*July 27, 2014*

**english**

Freud believed the purpose of dreams is to
*July 27, 2014*

**finance**

202,200
*July 27, 2014*

**finance**

206,600
*July 27, 2014*

**finance**

$200.00
*July 27, 2014*

**math**

at the rate of 360 miles per hour, how far would an airplane travel in 1 hour and 20 minutes
*July 16, 2014*

**math**

a saleman, after deducting his commission of 6%, remits $2491 to his company. The gross amount of the sale amounted to.
*July 16, 2014*

**psychology**

A hypothesis is what an investigator uses to: duplicate research findings of other scientists. frame his/her research question. explain why he/she obtained a certain result from an experiment. define the parameters of a research study. determine what kind of research design to...
*July 15, 2014*

**english**

Who kills The Witch? Miss Foley Will Halloway Charles Halloway Jim Nightshade
*July 6, 2014*

**english**

What do the sign say that is on display at the carnival? The Most Beautiful Woman in the World Siamese Twins A Two-Headed Horse None of the above
*July 5, 2014*

**physics**

What is the acceleration of an object if it takes 10 seconds to increase its velocity by 40m/seconds?
*June 25, 2014*

**bearing and distance**

Two vehicles p and q leave a station at the same time.p travels 8km/hour on a bearing of 025 degree and q 5km/hour on a bearing of 45 degree west of north.how far apart are they and what is the bearing of p from q after 3hours?
*June 14, 2014*

**math,bearing and distance**

A man walks 100m due north and then 150m on a bearing of s30 degree of north.how far and on what bearing is he.from his original position?
*June 14, 2014*

**math**

. Jacqueline Strauss, a 25- year- old personal loan officer at Second National Bank, under-stands the importance of starting early when it comes to saving for retirement. She has committed $ 3,000 per year for her retirement fund and assumes that she’ll retire at age 65. ...
*June 12, 2014*

**Algebra**

If Buster Posey gets on base 45% of the time, what's the probability he will get on 5 out of 7 times at bat?
*June 10, 2014*

**math**

Max is 5 years younger than Michael . 4 years ago the sum of their ages was 25. How old are they ?
*June 8, 2014*

**math**

2and3/4plus 1and1/4 equals
*June 6, 2014*

**maths**

Jason rolls a can of baked beans from one end of his carpet to the other. If his carpet is 3 m long and if the can has a diameter of 75 mm, how many complete revolutions will the can make?
*June 4, 2014*

**Chemistry**

If 87.3 mL of 0.225M KOH solution is mixed with 44.4 mL of 0.313M H2SO4 solution, would the resulting mixture be acidic, basic or neutral?
*June 3, 2014*

**English8**

Before running, Jim always stretches. Is the gerund phrase before running or just running?
*May 15, 2014*

**English8**

Noreen hates being left behind. Find gerund phrase and tell if it is S, PN, DO, or OP I think it it being left behind and it is either direct object or predicate nominative
*May 15, 2014*

**English**

Collecting candy on Halloween and it is the subject
*May 15, 2014*

**English**

Collecting candy on Halloween still appeals to Del. find gerund phrase and tell if it is the subject, predicate nominative direct object or object of preposition
*May 15, 2014*

**geomettry**

An artist is using a coordinate plane to plan a string design for a wall. The artist plans to hammer a nail at each vetex of regular hexagon. then the artist will string to connect the vertices to make the hexagon shape. the artiststarts with a circle centered at the origin ...
*May 14, 2014*

**geo**

a graphic artist is using a coordinate plane to design a company logo. the log has an equilateral triangle inscribed in a circle.. The lies in quadrant 1, is tangent to the x and y axis and has a radius of 10 units. one side of the triangle is parallel to the y axis and one ...
*May 14, 2014*

**science**

a land form characterized by high elevation and a more or less level surface is called A.mountian B.plain C.plateau D.hill 3.which of the following statements about topography is correct A. The topography of an area includes the area's elevation, relief, and land forms B. ...
*May 14, 2014*

**science**

i think it is b
*May 14, 2014*

**science**

how is the equator similar to the prime meridian A. both the prime meridian and equator are lines that divide earth into norther and southern hemispheres B. both the prime meridian and equator are imaginary base lines from which locations of earth can be measured D. both the ...
*May 14, 2014*

**statistics**

8.Jean Siskel is an entertainment analyst for West Coast Securities. He is trying to develop a model to estimate gross earning generated by a new movie release. He has collected the following data on 20 movies: Gross Earnings, Production Costs, Promotion Costs, and if the ...
*May 8, 2014*

**statistics**

Plymouth Rock Securities is interested in finding out if there is a relationship between the number of new clients brought into the firm by a broker and the sales performance of the broker. A random sample of 11 brokers' records are reviewed to determine the number of new ...
*May 8, 2014*

**World REgional Geography**

A major objective of the South Pacific Forum founded in 1971 was A. expanding the copra trade. B. reconciling diverse cultural heritages. C. stopping French nuclear testing in the region. D. identifying and resolving human rights concerns in the region.
*May 8, 2014*

**World Regional Geography**

Which of the following is true of the Antarctic Treaty System? A. It was established specifically to enforce ecological regulations. B. It bans commercial mining in Antarctica. C. It's actually the Society for the Geographic Exploration of Antarctica. D. It provides the de...
*May 8, 2014*

**world regional geography**

A. is politically distinct from other regional countries. B. is linked to Egypt by the Nile. C. doesn't border the Sahara Desert. D. contains most of the evidence of humanity's African origins.
*May 8, 2014*

**world regional geography**

Sudan is omitted from inclusion in the sub-Saharan region because it
*May 8, 2014*

**world regional geography**

Which of the following is true of the Antarctic Treaty System?
*May 8, 2014*

**world regional geography**

A major objective of the South Pacific Forum founded in 1971 was
*May 8, 2014*

**alegbra**

you have N= 2,500 + 100 -Ina Cm > with a line under the > 1 How many units are sold after spending $1,000? Round the answer to the nearest whole number.
*May 8, 2014*

**chemistry**

A cylinder contains 40 g of HE, 56 g of N2, and 40 g of Ar. How many moles of each gas are in the mixture?
*May 7, 2014*

**health care**

i need an example of Social Constructionism benefits with the elderly population I think the answer is the health care worker I am in Masters program Thank You Mary
*May 7, 2014*

**health care **

Is an example of the social Constructionism with an elderly person, a caregiver Thank you
*May 7, 2014*

**algebra**

solve each exponential equation. Given the value for x 8^x=1/64 3^x=6 Can someone show me how to preform these. I would greatly appreciate it Thank You
*May 7, 2014*

**algebra**

Thank you very much it is greatly appreciated.
*May 6, 2014*

**algebra**

25=(1/5)^-2
*May 6, 2014*

**algebra**

Thank you very much Steve for explaining it like you did, that was a great help. It is greatly appreciated. Have a wonderful day.
*May 5, 2014*

**algebra**

write the equation in logarithm form a) 343=7^3 b) 25-(1/5)-^2 c A=bc Thank you for your help. I have no idea how to do this problem and I am getting stress.
*May 5, 2014*

**algebra**

MathMate, I want to thank you so much in how you explained it. Thank you again and have a nice evening
*May 5, 2014*

**algebra**

Let U=1,2,3,4,5,6,7,8,9,10 {x|x is multiply of 2} U {x is multiply of 7}
*May 5, 2014*

**math**

the circumference of a circle is 120 millimeters. Which of the following inqualities is true for d, the diameter of the circle measured in millimeters? A. 10<d<20 B. 30<d<40 C. 50<d<60 D. 70<d<80
*May 5, 2014*

**algebra**

Let U= 1,2,3,4,5,6,7,8,9,10 {12345 n 34567 Thank you
*May 4, 2014*

**algebra**

thank you Steve it is appreciated very mush
*May 4, 2014*

**Chemistry**

Im not exactly sure what how to solve this with the way my teacher asked this question. "For hydrogen atom transitions calculate E, v, and wavelength:" Ni= 1 li= 0 Mli= 0 Msi= -1/2 Nf= 2 Lf= 0 Mlf= 0 Msf= -1/2 E(kj)= ? v(Hz)= ? wavelength(m)= ?
*May 3, 2014*

**algebra**

solve the equations 21E-7=0 I came up with 0.33 am I right or wrong
*May 2, 2014*

**algebra**

thank you Ms. Sue
*April 30, 2014*

**algebra**

a certain test us worth 125 points (rounded to the nearest point are need to obtain a score of 75%
*April 29, 2014*

**algebra**

if you multiply a number by 4 and than subtract negative 10, the difference is a negative 26. what is the number
*April 29, 2014*

**algebra**

the pitch of a roof is the ratio of the rise to half span. If a roof has a rise of 6 feet and a span of 20 feet what is the pitch. Thank you
*April 29, 2014*

**Alegra**

Suppose that a spreadsheet contains the following values. A1 6 B1 -4 C1 2 D1 3 Determine the value of cell E1 if it contains the following formulas. a) +A1 + B1 E1= 2 got that one right b) +4*A1 + 5*B1 got that one wrong c) +C1*(A1 +3*B1) got that one wrong d) +A1+...+D1 or ...
*April 26, 2014*

**algebra**

I have try this three different way and still can not come up with the correct answer, could you guide me the right way. suppose that a spreadsheet contains the following values, A6, B-4, C2, D3 it said to determine the value of cell E1 if it contains the following formulas. a...
*April 25, 2014*

**Statistics **

For the following set of scores: X Y 6 4 3 1 5 0 6 7 4 2 6 4 a) Compute the Pearson correlation. b) Add 2 points to each X value and compute the correlation for the modified scores. How does adding a constant to every score affect the value of the correlation? c)Multiply each ...
*April 24, 2014*

**algebra**

I have try this three different way and still can not come up with the correct answer, could you guide me the right way. suppose that a spreadsheet contains the following values, A6, B-4, C2, D3 it said to determine the value of cell E1 if it contains the following formulas. a...
*April 24, 2014*

**algebra**

solve the equation. Enter the answer as a comma-separated list. if there is no real solution, enter no real solution. x upper 2 - 10x+20=0
*April 24, 2014*

**Accounting**

In June 2011,Kelly purchased new equipment for $26000 to be used in her business.Assuming Kelly has net income from her business of $75000 prior to the deduction,what is the maximum amount of the cost recovery Kelly can deduct rounded to the nearest $,assuming she does NOT ...
*April 24, 2014*