# Posts by MAry

Total # Posts: 3,836

**Help- Calulus**

A. If the focal length of the convex lens is supposed to be 5 cm, and if the image is formed 7 cm from the lens, find the distance, p, from the lens to the object. (It’s not necessary to simplify your answer.) Equation: 1/p + 1/q = 1/f

**Calculus**

Ohhhhhhhhhhhhhhhhhhhhh, Thanks!

**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?

**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 ...

**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 ...

**Calculus..**

Thanks :)

**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 ...

**Physics**

I don't know that's why I'm here

**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?

**math/physics**

A small rectangular tank 5.00 in. By 9.00 in is filled with mercury. a) if the total force on the bottom of the tank is 165lb, how deep is the mercury? b) find total force on the large side of the tank

**physics**

Thank you!

**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?

**General Psychology**

Which of the following is a stimulant? Alcohol LSD Heroin Mescaline Nicotine

**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

**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

**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 ...

**math**

omg i have the same exact question on my hw...somebody plsss answer

**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

**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

**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?

**math**

Estimate 540943 + 382093= 923036

**math 4th grade**

Find two numbers the exact answer is between 3x567

**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...

**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?

**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.

**Chemistry please help**

thank you so much, yes the site is helpful

**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 ...

**math**

what is the demand and supply function using the q(p)= mp+b form is most likely the question

**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...

**stats**

what are the mean and standard error when using central limit theorem for dichotomous variable

**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

**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

**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

**math**

I agree

**math**

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

**math**

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

**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: ...

**math**

50 in 100 and 30 in 90

**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?

**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 ...

**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

**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

**Calculus**

Determine whether Ax = lnx/(sqrt x) is convergent

**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.

**english**

Freud believed the purpose of dreams is to

**finance**

202,200

**finance**

206,600

**finance**

$200.00

**finance**

14.87

**math**

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

**math**

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

**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...

**english**

Who kills The Witch? Miss Foley Will Halloway Charles Halloway Jim Nightshade

**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

**physics**

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

**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?

**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?

**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. ...

**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?

**math**

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

**math**

2and3/4plus 1and1/4 equals

**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?

**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?

**Science**

Earth's gravitational pull keeps the Train on the ground electrical poles move the train and magnetic pools keep the wheels on their tracks

**english**

Kevin has two passions in life _____ making money and spending it

**English8**

Before running, Jim always stretches. Is the gerund phrase before running or just running?

**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

**English**

Collecting candy on Halloween and it is the subject

**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

**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 ...

**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 ...

**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. ...

**science**

i think it is b

**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 ...

**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 ...

**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 ...

**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.

**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...

**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.

**world regional geography**

Sudan is omitted from inclusion in the sub-Saharan region because it

**world regional geography**

Which of the following is true of the Antarctic Treaty System?

**world regional geography**

A major objective of the South Pacific Forum founded in 1971 was

**algebra**

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.

**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?

**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

**health care**

Is an example of the social Constructionism with an elderly person, a caregiver Thank you

**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

**algebra**

Thank you very much it is greatly appreciated.

**algebra**

25=(1/5)^-2

**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.

**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.

**algebra**

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

**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}

**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

**algebra**

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

**algebra**

thank you Steve it is appreciated very mush

**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)= ?

**algebra**

solve the equations 21E-7=0 I came up with 0.33 am I right or wrong

**Probability**

1)2/lambda 2)4/lambda CORRECT!!!!!

**algebra**

thank you Ms. Sue