Wednesday

July 23, 2014

July 23, 2014

Total # Posts: 122

**math, statistics**

The image of the public library is constantly changing, and their online services continue to grow. Usage of the library's home page grew by 17% during the past 12 months. It has been estimated that the current average length of a visit to the library's homepage is app...

**STATISTICS**

Suppose that you are in a class of 29 students and it is assumed that approximately 16% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are left-handed. (b) Compute the probability th...

**calculus**

3x^2-75/6x+30

**calculus**

x^2-9/8x-24

**calculus**

(x^2-1)/5x+5

**Education**

What do you consider to be three important positive qualities a teacher should possess?

**electromagnets**

A 100 gram resistive slider (thick line) moves without friction along a vertical U-shaped conducting track (thin line) that is 50 centimeters wide in a magnetic field of 5 Tesla as shown. The slider's resistance is 20 Ohms. It falls under the influence of gravity. What is ...

**eletromagnets**

In earlier learning sequences we described how a static magnetic field cannot change the speed (and therefore kinetic energy) of a free charged particle. A changing magnetic field can, and this is one way particle beams are accelerated. Consider free protons following a circul...

**magnets**

A very large loop of metal wire with radius 1 meter is driven with a linearly increasing current at a rate of 200 amps/second. A very small metal wire loop with radius 5 centimeter is positioned a small distance away with its center on the same axis (the loops are coaxial). Th...

**magnets**

A 100 gram resistive slider (thick line) moves without friction along a vertical U-shaped conducting track (thin line) that is 50 centimeters wide in a magnetic field of 5 Tesla as shown. The slider's resistance is 20 Ohms. It falls under the influence of gravity. What is ...

**Math**

If two angles of one triangle are congruent to two angles of another triangle, then?

**Math**

(-2x-3+8x^2) divide by (1+4x)

**MATH**

Complete Problem 34 in Section 5.2 Exercises (Ch. 5) of Essentials of Geometry for College Students. 34. Given: ABC,/ AD bisects <BAC, and /AE=/ED Prove: AE/AC = BD/BC

**chem**

Which of the following solutions represent a buffer system? Select all that apply. Answer A. H2CO3 and HCO3- B. HNO2 and NaNO2 C. NH4Br D. Na2SO4 E. HClO4 and NaClO4 F. CH3COOH

**Analytic Algebra**

Verify your results of the 2 linear equations by graphing in the desired graphing program and paste the graph in your assignment document (edit/copy image). 35x + 50y = 2220 x + y = 51 y = 29 x = 22

**MAth**

Write a six pairs of digits that make one number?

**statistics**

High

**Physical Chemistry **

The escape velocity, the velocity required by an object to escape from the gravitational field is given V^e = (2gr)^1/2 where r is the radius for Earth (6.37 x 10^6m). At what temperature will the c of an H2 molecule and of an N2 molecule attain the escape velocity?

**Chem..**

1. The c of a certain gas at 25˚C is 411 m/sec. Determine the molar mass of the gas. 2. The c of a sample of O2 is 575 m/sec. Determine the temperature of the gas.

**PHI103**

Sorry, I didn't post my argument the last time. Write two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the arguments in symbols using sentence letters and truth-functional connectives. The following is one of the a...

**PHI 103**

Write two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the arguments in symbols using sentence letters and truth-functional connectives. The following is one of the arguments and I believe it can be used for both modus...

**Science**

That wind power is green.

**Science**

Ms. Sue I understand, but what the professor requested was the following: NOTE: In the “Sample: Outline,” it states that the thesis statement is the last one to three sentences of the introduction. However, the thesis statement must be one sentence in length and the ...

**Biology**

Ok, I understand now. Thanks I appreciate the feedback and I will add to it that though they would have us doubting that wind power is green I will prove that it is green.

**Biology**

Ms. Sue I understand this but what the professor requested was the following: NOTE: In the “Sample: Outline,” it states that the thesis statement is the last one to three sentences of the introduction. However, the thesis statement must be one sentence in length and ...

**Biology**

Is Wind Power Green? I am writing a paper and I need to put together an outline of my final paper. I would just like to know if the following paragraph I have put together can serve as a thesis statement? "The idea that the world is reaching a possible peak in oil product...

**Education**

It was actually a question I was given in my education class... I have to pick the best answer that fits the statement.

**Education**

Having undertaken a variety of proactive steps to forestall the inclusion of items that might, due to an item's content, have an unwarrantedly adverse impact on students because of any student's personal characteristics, the test-developers then, based on sound methodo...

**Math**

At an airport, a flight controller is in a tower 45m above the ground. She observes an airplane flying at a constant altitude at an angle of elevation of 14 degrees from her line of sight. Seven seconds later, the airplane flies directly overhead. If the airplane has a constan...

**Psychology**

How does the elaboration likelihood model helps to explain the relationship between the persuader, the message and audience?

**Psychology**

Thank you for your help. I was so confused but that makes alot of sense to me and I think I can go with Aristotle....thanks again.

**Psychology**

This is part of a paper I am writing.....I need to write about this, however I am confused by the 2nd part of the question. What do you think they are looking for when they state how are we influenced by emotion, framing and narratives? What attributes are inherent in persuasi...

**Physic**

A student walks to school 3 blocks North. For lunch he walks to Mcdonald's 3 blocks North. After lunch he returns home 6 blocks South. The magnitude of his total displacement is now

**college algenra**

it a log problem? e^x=87

**Oceanography**

What substrate indicates the youngest and oldest beach? What are coral's symbionts?

**psychology**

A massage therapist stimulates the body, which in turn stimulates the: a. parietal lobe b. temporal lobe c. pituitary gland d. prefrontal cortex

**math - earn interest**

invest money that pays 6.3% interest/year compounded quarterly. How long should invest if want to double initial investment?

**math - natural logs**

Find the EXACT solution to e^(1-x) = 4^x You must use logs, not just a calculator.

**algebra**

How many years and days will it take for a deposit of $700 to double at 4% interest compounded continuously?

**math**

ball is thrown up at 88 ft/s from a height of 25 feet. Path of ball is y = -16t^2 + 88t +25. y is the height of ball above the ground t seconds after being thrown. when does it reach maxiumum height? (I got that at 2.75 s) At what time does the ball hit the ground? (I set equa...

**algebra**

invest $2,000, part earns 6% year and reh rest earned 11% year. Interest at end of year = $155. How much is invested at each rate?

**Psychology**

Which of the following statements describes the relationship between genes, chromosomes, and DNA? a. Genes, the basic unit of heredity, are located on chromosomes, which consist of strands of DNA b. Genes are composed of and DNA c. Chromosomes, the basic unit of heredity, dire...

**psychology**

thanks for your help

**Psychology**

thanks for your help

**Psychology**

Peter and Maria are adopting a child whose biological parents have low IQs. They want to know if this child, too, is likely to have a low IQ? Which of the following is the best response to their question? a. While IQ is heritable at least in part, environmental influnces can h...

**Psychology**

Studies that have overcome methodological problems in examining intelligence scores for African- americans as compared to people of Anlo-Saxon descent revealed: a. that the test results were useless becxause racial prejudice invalidated them b. thst African Americans scored hi...

**psychology**

Janice smokes while she is pregnant with her son. He is more likely to have: a. a normal IQ b. a lower IQ c. a higher IQ d. an IQ below 90 I choose B, is this right?

**psychology**

Thanks so much for your help PsyDag. God Bless!!!!

**psychiology**

Wihtin groups, differences in intelligence are highly correlated with _______. Between groups, differences are highly correlated with __________. a. heritability; environment b. environment; genes c. heritability; random error in measurmemt d. genes; the heritability estimate ...

**psychology**

A wealthy, married man in China is having an affair with a beautiful young woman, who seems primarily attracted to his financial status. At the same time, similar situations are occuring across other races and nations. Sociobiologists would say that: a. these behaviors are fou...

**psychology**

According to Noam Chomsky, language is primarily aquired through a. an innate module b. our parents correcting us c. imitating our parents d. trial and error I chose B Am I correct?

**psychology**

The sentences," lee gave the ball to LYNNE" and Lynne received the ball from Lee,"have the same: a. surface structure b. syntax c. surface and deep structures d. deep structures I chose A, is that right?

**psychology**

One way to explain why gene frequencies change is that individuals with traits that are adaptive in an environment will stay alive to reproduce. over generations their genes will become more common. This process describes: a. evolution b. natural selection c. sociobiology d. h...

**psychology**

One reason that new traits keep arising is because of genes' ability to spontaneously: a. divide b. split c. multiply d. mutate I chose D, am I right?

**psychology**

Brad wonders if he will have a problem later in life with alcoholism. His father is an alcoholic and his great-grandfatheer had a problem holding a job due to his drinkng habits. After reading this lesson, Brad believes that a/an ______ study would give him the best informatio...

**psychology**

within each gene, elements of DNA are arranged in a particuler order., forming a code that influences the synthesis of particular proteins. This code affects every aspect of the body, from its structure to the chemicals that keep it running. the above process desrcibes: a. lin...

**psychology**

Which one of the following statements describes the relationship between genes, chromosomes, and DNA? a. Genes, the basic unit of heredity, are located on chromosomes, which consist of strands of DNA.b. Genes are composed of chromosomes and DNA. c. Chromosomes, the basic unit ...

**Oceanography**

A 15.75-g piece of unknown metal absorbs 60 cal of heat energy, and its temperature changes form 25 degrees C to 175 degrees C. Calculate the specific heat capacity of this metal.

**informal logic**

i think its appeal to pity

**informal logic**

Officer, please don't give me a ticket. My kids were hungry, and I had to drive fast to get them their food" may commit which fallacy?

**Englis**

The teacher said they were going to grade the test over the weekend. __ Pronoun shift in number __ Pronoun shift in person _X_ Ambiguous reference __ No error

**Chemistry**

Balanced ionic equation for ClO + Fe(OH)3 = Cl + FeO4. Show electron balance and work

**geometry**

what is the area of a trapazoid h=6,b1=5,b2=3

**espaniolII**

Por primera, tú necesitas cambiar los hábitos. Si tú trabajas mucho para tener una buena dieta, va a hacer mas feliz también. Es tan difícil para mantener una vida saludable. Es esencial que no comas comida basura y hacer ejercicios todos los...

**science**

A wagon with a weight of 300N is accelerated across a level surface at 0.5 m/s . What net force acts on the wagon

**Precalc**

A woman made $45,000 during the first year of her new job at city hall. Each year she received a 10% raise. Find her total earnings during the first nine years on the job.

**Compter programing Design**

Design a program that will ask the user to enter the amount of a purchase. The program should the compute the state and county sales tax. Assume the state sales tax is 4 percent and the county sales tax is 2 percent. The program should display the amount of the purchase, the s...

**Health**

How to develop a filing system and determine the number of shelves and the like that will be needed. hospital has asked to keep hard copy records for 4 years. number for the first year 25,000, 2nd - 28,000, 3rd - 32,000 and fourth 40,000

**PreCalc**

Where did you get the values from?

**PreCalc**

Which investment option will pay the most interest? A. 12.6% compounded annually B. 12.4% compounded semiannually C. 12.2% compounded quarterly D. 12.0% compounded continuously E. These investments all pay the same amount of interest.

**trig**

The angle of elevation from the top of a house to a jet flying 2 miles above the house is x radians. If d represents the horizontal distance, in miles, of the jet from the house, express d in terms of a trigonmetric function of x.

**PreCalc**

Consider the function(7+15x^2)/(10x^2+9x+10). Find the function's domain and identify any horizontal and vertical asymptotes Please Help!

**calculus**

An open box is to be made from a square piece of cardboard, 32 inches on a side, by cutting equal squares with sides of length x from the corners and turning up the sides (see figure below). Determine the function, V, in terms of x, that represents the volume of the box. A. -2...

**economics**

Is the mrts? a. minuse one times the ratio of marginal products for ea. input? b. the slope of the marignal revenue product curve c. the marginal products of either input d. the slope of an icocost curve

**Finance**

Camping USA Inc. has only been operating for 2 years in the outskirts of Albuquerque, New Mexico, and is a new manufacturer of a top-of-the-line camping tent. You are starting an internship as assistant to the chief financial officer of the company, and the owner and CEO, Tom ...

**college algebra**

Solve each variation problem. n varies directly as q, and n= 39 when q=3. Find n when q=8.

**college algebra**

Find the variation constant and write a formula that expresses the indicated variation. c varies inversely as d, and c=5 when d = 2.

**college algebra**

u varies inversly as n

**college algebra**

Write formula that expresses the relationship described by each statement. Use k for the constant in each case. m varies directly as p.

**college algebra**

Find equation of each line form y=mx+b if possible. The line through (3,2) with undefined slope.

**college algebra**

Find equation of each line. write answer in slope intercept form. The line parallel to -3x+2y=9 and contains the point (-2, 1).

**college algebra**

Find the equation of the line that goes through the given point and has the given slope. Write the answer in slope- intercept form. (-1,-5), -8

**college algebra**

Write equation in slope form y+3= -3(x-6)

**college algebra**

Determine whether the lines are parallel, perpendicular or neither. y=x+7 y=-x+2

**college algebra**

same as previous question. y+4x=8

**college algebra**

Find Slope and y intercept for each line that has a slope and y intercept. x+2y=3

**college algebra**

no i wasn't and no i do not . i'm glad u think this is so funny. It is because of people like you that other students making A's in every other subject but struggling with math don't do well in math. So thank you so very much.

**college algebra**

Draw line 1 through (-4, 0) and (0, 6). What is the slope of any line parallel to line1? Draw line 2 through the origin and parallel to line1.

**college algebra**

The line through (-2, 5) with slope -1

**college algebra**

x-2y=6

**college algebra**

y= -x+4 x y -2 0 2 0 -2

**College Algebra**

Find solution and Graph y=2x+5 : (8, ), (-1, ), ( , -1)

**finance**

$1,250,000

**Science**

what are two types of technologies that help people study the surface and composition of earth

**Managerial Economics**

Please check Here gasoline output is mesured in thousands of gallons, fiber output in the thousands of square feet, and crude oil in thousands of barrels. The product's profits per unit output are $.50 per gallon for gasoline and $.75 per square foot for fiber. The the res...

**Physics**

A 930 kg car strikes a huge spring at a speed of 22 m/s, compressing the spring 12.0 m. (a) What is the spring stiffness constant of the spring? (b) How long is the car in contact with the spring before it bounces off in the opposite direction?

**Physics**

A mass m at the end of a spring vibrates with a frequency of 0.93 Hz. When an additional 607 g mass is added to m, the frequency is 0.63 Hz. What is the value of m?

**Physics**

A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 3.0 J of work is required to compress the spring by 0.17 m. If the mass is released from rest with the spring compressed, it experiences a maximum acceler...

**Managerial Economics**

Ms. Sue, the resort's operating costs are the same in the winter and the summer. But their rooms are filled more in the summer than in the winter, so to maximize their profits, the resort increases price to increase sales and profits, but the marginal costs remains the sam...

**Managerial Economics**

A CA resort offers year-round activities and the resort's operating costs are essentially the same in winter and summer. Mgmt charges higher nightly rates in the winter, when its average occupancy rate is 75%, than in the summer, when its occupancy rate is 85%. My questio...