Friday

August 1, 2014

August 1, 2014

Total # Posts: 1,730

**physics **

Two identical diverging lenses are separated by 15 cm. The focal length of each lens is -8.0 cm. An object is located 4.0 cm to the left of the lens that is on the left. Determine the final image distance relative to the lens on the right.

**geometry**

determine the values of x and y for which ABCD is a parallelogram. AB = 3x + 7, BC = y +8, CD = 5x + 1, DA = 2y - 3

**geometry**

classify a triangle with side lengths 5, 9 and 12 as acute, right, or obtuse

**geometry**

ABCD is a trapezoid with median EF and bases AB and CD. AB = 18, EF = 28. Find CD

**math**

what is the inverse of: f(x) = 2(x – 4)^2 + 5

**Math**

This is how the question looks on the sheet?

**Math**

A rabbit population satisfies the logistic equation dy dt = 2x10^-7y(10^6- y); where t is the time measured in months. The population is suddenly reduced to 40% of its steady state size by myxamatosis. If the myxamatosis then has no further effeect, how large is the population...

**Problem Solving**

A 4oz jar of spice costs 92 cents. What is the unit cost per ounce.

**writting out clock time**

How do I write 1 minute 45.9 seconds? Is it 1:45.9 or is that one hour 45.9 seconds?

**math**

Records from buzz's sawmill show that workers have a 0.02 probability of losing an arm and a 0.03 probability of losing a leg in a year. What is the probability that a worker does not lose an arm? What is the probability that worker does not lose and arm or leg?

**math**

What is the number of ways 9 people from a group of 13 could be arranged in a line.

**MATH**

The probability that a voting-age adult in 2004 voted in the presidential election was 0.57. Five voting-age adults in 2004 were randomly selected. Find the probability that exactly 2 or the 5 adults voted in the presidential election.

**statistics**

11 are from Atlantis and 5 are from Zedonia

**statistics**

A group meeting is attended by 16 delegates. (a)If a 6-person negotiation panel is selected at random from the 16 delegates, what is the probability the negotiation panel consists of 3 delegates from Atlantis and 3 delegates from Zedonia?

**physics**

i am also stumped on this question The bounce periods y are measured for a set of masses x hung from a spring. Assuming the exponential form y = bx m, (log y) vs. (log x) is plotted, yielding a linear trendline equation of (log y) = 0.4796 (log x) + 0.1029, with R2 = 0.9991. W...

**physics**

A 2630-kg car drives up a hill 769 meters high in 41.0 seconds. Calculate the power exerted

**bio**

what do macrophages have to do with coplement proteins

**english**

so adverb?

**english**

(forth) is italicized

**english**

thank you and i have something different now: What part of speech is the italicized word in the sentence below? Four score and seven years ago, our forefathers brought forth upon this continent a new nation conceived in liberty and dedicated to the proposition that all men are...

**english**

so its complex??

**english**

please help

**english**

is this a compound or complex sentence: They were lovely people, the kind you might meet anywhere.

**Statistics**

A large furniture store has begun a new ad campaign on local television. Before the campaign, the long term average daily sales were $24,819. A random sample of 40 days during the new ad campaign gave a sample mean daily sale of x(bar)=$25,910 with sample standard deviation s=...

**english**

its adjective clause?

**english**

i have one more :The hero falls in love with a countess (who is very beautiful).

**english**

its past participial phrase

**english**

i think it could be: Headed by a senior,

**english**

so it would be nominative absolute??

**english**

senior

**english**

or prepositional phrase with a gerund

**english**

thank you and what about this one:Headed by a senior, the group drew up rules for School Spirit Week. i think its nominative absolute??

**english**

please help me!!!! Put the sizes on the uniforms while sorting them out. and the italicized is sorting them out,can only be: adverb clause infinitive phrase past participial phrase elliptical clause adjective clause

**english**

please help me

**chemistry **

The half life of phosphorus -32 is 14.3 days. What percentage of an original samples radioactivity remains after 57.2 days?

**biology**

What reactions go on in your brain when you fall asleep? If you could give me a website that goes INDEPTH as to what happens in the brain when you fall asleep that would be great!

**statistics**

The international olympic committe states that the female participation in the 2004 summer olympic games was 42%, even with new sports such as weight lifting, hammer throw, and modern pentathalon being added to the games. Broadcasting and clothing companies want to change thei...

**math**

For the geometric series 50+48+... a. 867.373 is the approximate value of a partial sum of the series. How many terms were added to get this number? b. To what number does the serveries converge?

**APUSH PLZ HELP!**

In 1850 the South was in good political shape. Each of the following descriptions explains why that was true except? A. Zachary Taylor, the president, was a southern slave-owner B. The majority of the presidential cabinet were southerners C. Most of the justices on the US Supr...

**APUSH**

In 1850 the South was in good political shape. Each of the following descriptions explains why that was true except? A. Zachary Taylor, the president, was a southern slave-owner B. The majority of the presidential cabinet were southerners C. Most of the justices on the US Supr...

**science**

How do you think objects will fall when there is no air

**Math Word problems (3rd Grade)**

A 4oz jar of spice costs 92 cents. What is the unit cost per ounce?

**bio**

how is the thalamus the sensor regulator for the brain (what are the steps that happen when it receives a stimuli?

**biology**

how does the REM help create a sleep signal sent from the pons in the brain that helps to stop motor neurons in the spine when a person sleeps. Please help me! I am looking for detailed information right down to the certain proteins and such! I have searched everywhere and can...

**Music**

I need to make an instrument for my music class. does anyone have any good ideas? we will have a week to make it. It cant be something that involves using power tools. Any ideas? and if so do you have a website on how to make it? I wanted to try to make an accordian like out o...

**math**

using three dimensional objects. trace one face of a cone. trace one face of a pyramid.

**algebra**

Mr.dorkus lost five test papers.he found a summary of the missing scores which said that the mode of the scores was 90 the meadian was 85 and the mean was 83.The grades were whole numbers bettween 0 and 100. what is the lowest possible score of the missing test

**algebra**

the student store sells schools supplies,hats,and t-shirts with NAMS printed on them.The person who counted the hats and t-shirts can't remember exactly how many of each there were but he does remeber these 2 facts: -there were four times as many t-shirts as hats -there we...

**Physics**

A particle has a de Broglie wavelength of 3.30 x 10^-10 m. Then its kinetic energy quadruples. What is the particle's new de Broglie wavelength, assuming that relativistic effects can be ignored?

**Physics**

The interatomic spacing in a crystal of table salt is 0.281 nm. This crystal is being studied in a neutron diffraction experiment, similar to the one that produced the photograph in the figure. How fast must a neutron (mass = 1.67 x 10^-27 kg) be moving to have a de Broglie wa...

**math**

If the volume of a cylindrical block is equal to 800cm^3 prove that the total surface area is equal to 2(pi)x^2 + (1600)/x, where x cm is the radius of the base. hence obtain the value x which makes the surface area a minimum.

**geometry**

The area of a regular decagon is 50cm2. What is the area of a regular decagon with sides four times the sides of the smaller decagon?

**circular motion**

6134

**math**

2 men ran 36 parts. X ran 5 times as many as Y. how many parts did Y run?

**History **

Create a Metaphor and simile about the panama canal, the perspective of the untied states from panama canal, and from the perspective of panama canal from the untied states. and give three reason for each.

**Math**

find the equation of a line that passes through (5,2) and (2, -2)?

**Physics. PLEASE HELP!!**

You must be in Dr Jordans class as FAU as well

**alegbra **

Coach Willful believes that the best sixth-grade soccer players are 58 inches tall, and he will accept his ideal as players on his team. why does the equation:|58-h|<4 express the height,h, of coach Willful's team players?

**Current/Magnetic force**

A high voltage power line carries a current of 110 A at a location where the Earth's magnetic fields has a magnitude of 5.9 x 10^-4 T and points north at an angle of72 degrees below the horizontal (toward the earth surface). Find the direction and magnitude of the magnetic...

**social studies**

Thanks

**social studies**

i did my project on the attack on pearl harbor and it says that i have to describe how my project relates to the theme "Revoultion,Reaction and Reform" i have no clue about this question. Please help?

**social studies**

Why was pearl harbor described as a day of infamy?

**physics**

a fully loaded saturn V rocket has a mass of 2.9*10 to the power of 6 Kg. Its engine provides a thrust of 3.3*10 to the power of 7N(down). Determine its weight (force due to gravity) as it stands on a launching platform

**math**

Compute the compound quarterly amount after 1 year for $100 invested at 12% interest compounded quarterly. What simple interest rate will yield the same amount in 2 years?

**physics**

What pressure does a 155Newton woman exert on the floor when she balances on one of her heels? Her heels have an average radius of 0.0005 m.

**physics **

Please Help, Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.33 m. A third point charge q = +7.8 µC is fixed at the origin. The net electrostatic force exerted on the charge q ...

**math**

how do you do it though? its hard

**math**

what problem did the dumb gangster have when the boss told him to blow up a car?

**APUSH**

Please check? 1. a 2.c 3. e 4. b 1. Before the civil war the south's slave labor force a. was a self reproducing population b. was generally unprofitable to the planter class c. was an inflexible labor system d. was employed exclusively in the cultivation of cotton e. was ...

**math**

Suppose $15000 is invested in an account for 6 years. Find the balance in the account if interest is compounded continuously at 6%.

**English**

In the word ecologists, is eco the root morpheme or ology? Are the morphemes eco, log, y, ist, s or ec, ology, ist, s ? This is very confusing for me. Any explanation on how to find the root would be appreciated. It's easy to find roots on some words, but words like ecolog...

**English**

requirements name the root morpheme:quire # of bound morphemes: 3 list derivational morphemes: re, ment list inflectional morphemes: s Is this correct?

**calc**

consider the function f(x)=x^3 - x^2 - 3x -2. find the average slope of this function on the interval (-2,3). by the mean value theorem, we know there exists a c in the open interval (-2,3) such that f'(c) is equal to this mean slope. find the two values of c in the interv...

**English**

Is "this" an adjective or determiner if you are doing a syntax tree diagram branching out from a NP? I will surely leave this job without a penny in my pocket. Is "without" a preposition?

**English**

Is this sentence in past progressive tense? The freshman math classes were already behind schedule by three weeks.

**Physics**

Calculate the resistance of a 900 watt toaster operating at 120 volts. Which formula do you use?

**math! help please wont take long**

dont answer i figured it out

**math! help please wont take long**

find the value of K so that 3x^2-6x+k=0 has a double root answer is 3. how do you find that

**College Algebra**

Let U = {5, 6, 7, 8, 9, 10, 11, 12, 13, 14}, A = {6, 8, 10, 12}, B = {9, 13}, and C = {6, 9, 12, 13, 14}. List all the members of each of the sets. (a) (A ¿ B) ¿ C , (b) A ¿ B ¾ C

**English**

important is an adjective; ratings is a noun; reasons is a noun;offers is a verb.

**English**

Incorrect sentence: The report considers important factors in choosing a medical facility, ratings of services at the urgent care center, reasons why HMO members do not use the center, and offers suggestions for increase in member usage. I know this has parallelism problems. I...

**English**

I think # 1 is weak and #3 is weak.

**English**

Are the verbs in these sentences passive voice, weak or past tense. My answers: 1. The book was informative but too long.--weak or past or both?? 2.The teachers have sent the book to the publisher.--past 3.The essay has been shortened by ten pages.-- past 4. This method of pai...

**Math**

Transform the equation or inequality by completing the square. y^2+3x-6y-7=0

**physics**

At a given instant in time, a 4.2-kg rock is observed to be falling with an acceleration of 8.4 m/s2. To two decimal places, what is the magnitude of the force of air resistance acting upon the rock at this instant?

**Chemistry**

[H^+] = 2.7 x 10^-3 Calculate for [OH^-] [OH^-] = ? M

**Algebra**

A club with 35 members is to select five officers (president, vice president, secretary, treasurer, and historian). In how many ways can this be done?

**physics**

a force F pushes on a box of mass m that initially is at rest on a rough, horizontal surface. the force F is directed at an angle theta = 30 degreees above the horizontal. the coefficants of friction between the plane and the box are static= .30 and kinetic = .28. if F=50N and...

**Math**

Given two spinners one with four equal parts labeled 1,1,3,4. And one with six regions labeled 1,2,3,4,5,6. Given one spin on each spinner what is the probability of spinning two numbers with the sum of 7?

**algebra**

how many pounds of cashew nuts that sell for 2.00 a pund should be mixed with peanuts, which sell for 80 cents a pound to make a 10 pound mixture that sells for 1.28 a pound

**algebra**

a lab technician has a 15% alcohol solution. She wants to make 100 gallons of a 29% solution. How much of the 15% solution should she use?

**phyisics**

A 615 kg racing car completes one lap in 14.3 s around a circular track with a radius of 40.0 m. The car moves at constant speed. (a) What is the acceleration of the car?

**science**

*conclusion

**science**

i have no idea what to do for my manatee onclusion. Any ideas for what to say?

**science**

Thanks

**science**

What does it mean when manatees have natural selection? i have a summary to do about manatees and one of the words i have to use is natural selection. Any help?

**science**

i still dont get it :/

**science**

If the manatees were able to make 3 adaptions to their body or way of life for their survival, what would they be? PLEASE no websites :/

**science**

identify onbe external feature of the manatee that allows it to live in water.

**Physics**

A test tube in a centrifuge is pivoted so that it swings out horizontally as the machine builds up speed. If the bottom of the tube is 145.0 mm from the central spin axis, and if the machine hits 46500 rev/min, what would be the centripetal force exerted on a giant amoeba of m...

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