Saturday

April 19, 2014

April 19, 2014

Total # Posts: 406

**Statistics**

Put in Binomial Probability Formula? probability ( 2 of 22 are lost) = C(22,2) (1/200)^2 (199/200)^20

**Statistics**

How do I plug this into the Binomial Probability Formula? prob(lost) = 5/1000 = 1/200 prob(not lost) = 199/200 prob( 2 of 22 are lost) = C(22,2) (1/200)^2 (199/200)^20 = .005224..

**Statitics**

A Department of Transportation report about air travel that 5 out of every 1000 pieces of luggage are lost by the airlines. You are traveling with a group of people who have 22 pieces of luggage. What is the probability that 2 of these are lost? Set up the equation and plug in...

**math**

adding and subtracting fractions with unlike denominators

**Physics**

A 55 kg box is pulled with constant speed across the floor with a rope that is at an angle of 40 degrees above the horizontal. If the tension in the rope is 125n what is the coefficient of friction between the box and the floor?

**math**

How much total pounds of candy does Sam have...1/2,1/4,1/2,1/4,1/8,1/8,1/4,1/2,1/8? How much would he have if he redistributed the candy into bags with equal amounts, how much candy would be in each bag?

**statistics**

a sample of men's heights was taken. The average height was 68.5 inches, the SD was 1.95 inches. Use the normal curve to estimate the percentage of men with heights between 69 inches and 70 inches.

**Math**

What should you say if you see a tall, wrought-iron tower in Paris?

**chemistry**

bobpusrsley my answer is 700 hundred for the question A I just don't know how to show the work can you help me with that please.

**chemistry**

The best means of personal protection from radiation for emergency responders is the implementation of three basic principles: time, distance and shielding. Please show your work when answering the following questions: a. Using the inverse square law of radiation, what Geiger ...

**Finate Mathematics**

Is it true that the y-intercept of the straight line with equation Ax + By + C = 0 is -C/B (B ‚ 0).

**English**

Which marks of punctuation would be appropriate to set off the italicized words in the following sentence? One day my dad and his brother stop me if you've heard this story started out on what they thought would be an uneventful drive to work.

**math **

how to write 7/8 as a decimal

**Criminal Justice**

What are the top two theorys of interpreting the constitution if we eliminated judicial review?

**physits**

if the treadmills initial speed is 1.6 m/s what's it final speed

**Pre-Cal**

For given functions f and g find formulas for a)f o g and b)g o f. Simplify results as much as possible. f(t)= t-3/t+6 , g(t)= 1/(x+6)^2

**Math (College Pre-Cal)**

For given functions f and g find formulas for a)f o g and b)g o f. Simplify results as much as possible. f(x)= x+7/x-13 , g(x)= 1/x+1

**suno**

a 250 g yoyo is swung on the end of a 50cm string at a constant speed of 4/ms. the centrpetal force acting on the yoyo

**math**

Is it 56?

**math**

I am a 2 digit number. I am even. My digits have a difference of 1. I am not a multiple of 5. The sum of my digits is 11. What number am I?

**Chemisty**

How do I solve what is the mass of a 32.5 mL sample of ethanol if the density of ethanol is .789 g/mL. I know Mass = Density * Volume. So 32.5 mL * .789g/mL = the mass, but I don't know how to solve that.

**Math**

Write the ratio 2.7kg to 1.8kg as a fraction to the simplest form, with whole numbers in the numerator and denominator.

**conceptual science**

In the absence of air resistance, a ballplayer tosses a ball straight up. (a) By how much does the speed of the ball decrease each second while it is ascending? (b) By how much does its speed increase each second while it is descending? (c) How does the time of ascent compare ...

**Accounting**

True

**algebra**

Which point lies on the line defined by the equation 4x+3y=27 A. (-3,5) B. (5,3) C. (3,5) D. (-5,3)

**CRT/205**

I have to identify the rhetorical devices in this article race, class, and real estate by Sheryll D. Cashin august (2004)

**chemistry**

what is the percentage of alcohol in a misture containing 1500 mo of witch hazel (14% alcohlol), 2000 ml of glycerin, and 5000 mls of 50% alcohol?

**algebra**

how many grams of 2.5% hydrocortisone cream should be mived with 360 g of 0.25 to make a 1% hydrocortisone cream

**math**

The Flour Power Bakery makes 200 cherry cheesecakes at a cost of $2.45 each. If a spoilage rate of 5% is anticipated, at what price should the cakes be sold to achieve a 40% markup based on cost?

**Accounting II**

calculate the total dividends and the per-share dividends declared on each class of stock for each of the six years.

**n-clex RN**

which book is good to study for n-clex rn

**MATH**

CALCULATE THE MISSING LENGTH VOLUME= 1,000 CM CUBED

**Business Law**

yes

**American History**

Awesome thanks Ms. Sue you are awesome

**American History**

Ms Sue am i on the right track: The philosophers Ralf Waldo Emerson and Henry David Thoreau, poet Walt Whitman fought for self-reliance and independence. Many American philosophers of this period argued against slavery: William Lloyd Garrison, an abolitionist whose works were ...

**American History**

During the 1820 and 1830 a distinct American culture began to emerge. What philosophies, artists and artists works contributed to this culture? What were the unique American themes explored within these works? Help I dont know where t begin to answer this question especially t...

**HCS/335**

what is the historical and current impact of the biomedical issue?

**english**

i need help to i think is c.

**college algebar**

logb x= logb(x+2)-logb8

**statostocs**

The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°C at the freezing point of water. Tests on a large sample of these thermometers reveal that at the freezing point of water, some give readings below 0°C (denot...

**math**

Determine the value of x(4 - x) + 2 when x = –1.

**college algebar**

5< x-2/6 <6

**algebra**

70% = 7 ft (10ft x 70% = 7ft) after 10 bounces 10 x 7ft = 70 ft

**business**

using your full purchasing power, substituting products or suppliers, and placing high-volume orders

**Science**

Need help with a research topic for a paper on conservation of fresh water. I have to include two disciplines of classes - history and human and family development. Also, I need to integrate a theory - Bandura's theory of modeling? Can anyone help me? Throw me a bone to ge...

**Education/Technology**

I would go with D. They are portable - think of a CD or an USB device. You can insert a CD or USB and take it out. If the teacher changes classes, she can take her removeable media with her.

**math**

Generalize the pattern for the division of (x^n)-(y^n) by x-y

**math**

n points are arranged on a cirlce and all the chords drawn. Let I(n) be the number of intersection points inside the circle if no 3 chords are concurrent. Find a formula for I(n).

**math**

thank you!!

**math**

n points are arranged on a cirlce and all the chords drawn. Let I(n) be the number of intersection points inside the circle if no 3 chords are concurrent. Find a formula for I(n).

**alphabetize**

How do you alphabetize(using the actual number) 7 and 150?

**math**

what is an example or a quintic function with exactly four real zeros?

**math**

What is an example of a quintic polynomial function that has exactly four zeros?

**math**

What is an example of a quintic polynomial function that has exactly four zeros?

**algebar**

A rectangle is 5 times as long as it is wide. If the area is 125 square feet, find its perimeter.

**Chemistry. **

Caculate the wavelength of light emitted when each of the following transitions occur in the hydrogen atom. A.) n=3->n=2 B.) n=4->n=3 C.) n=2->n=1 How do you do this. Could you please just show me step by step for atleaset one. Please!

**Chemistry**

When n=3, the possible values of l are: 5, 4, 3, 2, 1, and/or 0? How do you know?

**Chemistry **

a.) Caculate the energy of light emitted when an electron moves from n=2 to n=1 in the hydrogen atom. b.) Caculate the energy of light emitted when an electron moves from n=4 to n=2 in the hydrogen atom. c.) How many total different light energies can be emitted from an electr...

**math**

For how many positive integers n does n! end in exactly 5 0s?

**math**

For how many positive integers n does n! end in exactly 5 0s?

**math**

What is the simplified form of the square root of 8x^5?

**math**

What is the simlified form of the square root of 8x^5?

**math**

You draw 2 marbles from a bag containing 3 blue marbles, 2 green marbles, and 5 red marbles without replacement. What is the probability of drawing a red marble and then a green marble?

**Physics - Heat Transfer**

aaaaaaaaahhhh. got it. you have to add them and set them equal to zero.

**Physics - Heat Transfer**

I am trying to calculate heat transfer between two objects. The units are as follows: m1: 100 g t1: 10 degrees C spec heat 1: 1.00 cal/g degree C m2: 200 g t2: 90 degrees C spec heat 2: 0.2 cal/gm degree C I set Q1 = Q2 m1 x spec heat 1 x delta T1 = m2 x spec heat 2 x delta T2...

**Physics - Unit Conversion**

I am trying to calculate heat transfer between two objects. The units are as follows: mass: grams specific heat: cal/gm degree celsius temperature: degree celcius My numbers aren't working out and I know how to do the problem. So, what's the deal with the gm. Is that g...

**physics**

1/200 = 0.005 meters / rad pi rad / node x 0.005 meters / rad = 0.0157 m / node

**Math**

(4.5 km/hr x X) + (3.5 km/hr x Y) = 40 Where X is the time there and Y is your time back. X = (40 - 3.5 Y) / 4.5 = 8.88 - 0.77Y Now plug X back into your original eqn and solve for Y: 4.5 (8.88 - 0.77Y) + 3.5Y = 40 Got it?

**Physics**

I think you solve it like this...do you have the answer to verify? I am no genius in physics... Forces in the x direction = friction = mass x acceleration. friction forces is found by multiplying the coefficient of friction (u) by the normal force. so. -u x mass x gravity = ma...

**Physics**

ok. thanks.

**Physics**

Won't the amplitude and period be greater at a maximum?? Do you know why we can use the given values??? As far as I can tell, we assume that 0.6 and 4.1 are maximums...I am not following. This gives me the correct answer, so, I guess I'm not understanding the equation ...

**Physics**

The period of oscillation of a spring-and-mass system is 0.60 s and the amplitude is 4.1 cm. What is the magnitude of the acceleration at the point of maximum extension of the spring? I have too many unknowns to use the equation for frequency, period, acceleration, velocity. W...

**Physics (maybe it's just math)**

A sphere of copper is subjected to 89.7 MPa of pressure. The bulk modulus is 130 GPa. a) By what fraction does the volume of the sphere change? b) By what fraction does the radius of the sphere change? for a) I have dV/V = 0.00069 - this is correct. for b) the area I have 4/3 ...

**physich**

initial momentum = final momentum m1v1(initial) + m2v2(initial) = m1v1 (final) + m2v2 (final) Initial Final m1 = m m1 = m v1 = 280 m/s v1 = ? m2 = 16m m2 = 16m v2 = 0 v2 = ? Plug them in and cancel out your ms and solve for v1 or v2. Then go back and plug that solved value int...

**algebra**

35 cents to $2.20. Whats the question?

**Grand Canyon University**

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

**Economics**

Would Wells Fargo's market structure be Monopolistic competition?

**Physics**

I found the average acceleration of earths orbit around the sun over a period of 5 days by calculating delta theta and dividing by radius and 1/T. I got the right answer but as I am studying for my test, I am seeing the units do not work...does this make sense? Can someone der...

**Chemistry**

In the experiment 0.500 g of copper reacted with oxygen to give 0.563 g of copper oxide. What is the empirical formula of the oxide expressed as a chemical formula?

**Physics**

How do I find the instantaneous acceleration of the earth orbiting the sun? Everything I am trying is incorrect. I am using 1 second as my time and get 1.99E-7 rads/second. First I tried: acceleration = theta x t / radius Where: theta = 1.99E-7 rads radius = 6.371E6 Then I tri...

**Physics**

Trying to find escape speed from a planet and I am given the radius and gravitational field - g = 18 m/s^2. I have the conservation of energy, final energy is zero, I have the formula for V = sqrt 2GM/r, u = mgy. I have too many unknowns...I can't solve anything. What am I...

**Chemistry**

hmm. I'm a bit stumped. Why did the instructions say it is not a simple mol/L calculation? You must have the quantity of the acetone/impurity mix? At that point, you could simply say that you have so many grams / L of acetone. But, since it's not a straight calculation...

**Chemistry**

hmm. I think you're leaving information out. Concentration is found by mass of acetone / volume liquid. Dividing initial volume by final volume leaves you with a unitless number - the percent of impurities maybe, and this isn't helping your case. You should have pretty...

**statistics**

.08 is the probability for defective parts.

**statistics**

Suppose a shipment of 500 machine parts contains 62 defective and 438 non-defective machine parts. From the shipment you take a random sample of 25. You are interested in the number of defective machine parts out of 25 trials and corresponding probabilities. I believe the corr...

**Physics**

I am grazing for answers because I spent 5 hours or more manipulating basically 1 equation and plugging in numbers to no avail. I was using my e^x function as 10^x. 8-/

**Physics**

A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. (a) How high above Earth's surface is the satellite? [Answer in Km] (b) What is the satellite's acceleration? [Answer in m/s^2] I see this posted over and over again and I have ab...

**physics**

A large air-filled rubber ball is tethered to the bottom of a swimming pool. The tension in the tether is 100N. The mass of the rubber in the ball itself is 2kg while pwater=1000kgm(-3) and pair=1.2 kgm(-3). What is the volume of the ball?

**Physics**

A boy wishes to row across a river in the shortest possible time. He can row at 2m/s in still water and the river is flowing at 1m/s. At what angle should he point th efront of his boat? The answer is 90 degrees but I dont understand how to solve the problem using the velocity...

**ashford university**

"Exercise 16-3 Determining the present value of a lump-sum future cash receipt Marsha Bittner expects to receive a $600,000 cash benefit when she retires five years from today. Ms. Bittner’s employer has offered an early retirement incentive by agreeing to pay her $3...

**math**

The population of a town is given by P =350t + 5000, where t is years after 1980. Teh input variable is what? and the Outpur variable is what? the ordered pairs are in the form of what. and what is the meanng of P(0) = 85000 in the context of this problem

**medical transcription**

He has, on physical examination, many erythematous actinic keratosis still present on the forearm. They are flat, but these are much less than before. He has, in addition, on his buttocks, 2 lichenified areas of erythema bilaterally on the buttocks where he sits.

**omm 612612 Managing in Social Change **

If you could choose between what we called the Anglo-American political economy and the continental European model of political economy, which would you prefer? Why?

**macroeconomics**

evaluate expectations through a Keynesian perspective or classical perspective. I need help figuring out how to do this.

**Principles of Macroeconomics**

Describe how expectations affects aggregate supply and demand through a classical perspective or keynesian perspective

**math**

In a scaled drawing 1/3 of an inch represents 6 feet how many inches represent 54 feet

**business**

I am having problems understanding cost variance model; Can you give me a simplyfied formula to determine budgetary variance models? I have an example.

**Healthcare Finance**

Metropolis Health System has received a wellness grant from the charitable arm of an area electronics company. The grant will run for twenty-four months, beginning at the first of the next fiscal year. Two therapists and two registered nurses will each be spending half of thei...

**math**

how do I set up this problem for linear equation 20x+.25=37

**business finance**

HELP ME GET STARTED ON THIS. I don't know what to do with the estimated demande & probability. This requires managers to estimate demand for the new product and assign probabilities. A range, rather than only one goal will be established. The first strategy is to set a sel...

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