Thursday
April 17, 2014

Posts by Jennifer


Total # Posts: 1,940

math
How do I solve this? Describe the locus of points z satisfying: |z+2|+|z-2|=5 z is a complex number.

Algebra 3
x^2/x^2-1 divided by 3x/x+1

physics
I have these problems that I keep doing and keep missing. If someone could please help me with what I am doing wrong! Two charges, -25 µC and +15 µC, are fixed in place and separated by 3.4 m. (a) At what spot along a line through the charges is the net electric fi...

Algebra 3
Perform the indicated operations and simplify. x^2/3(square root of x-1/square root of x)

Physics
Two cars approach each other from an initial distance of 2400 m. Car A is moving to the E at a constant rate speed of 40ms. Car B is moving to the W at a speed of 10ms but is accelarating at a rate of 2.00ms^2. What is the time before the cars meet the distance a traveled befo...

College Algebra
y = x + 4 y = 0 + 4 y = 4 y-intercept is 0,4 y = x + 4 y-4 = x 0 - 4 = x -4 = x x- intercept is 0,-4

spanish
Literally it means "Do you wear a uniform to school?"

chemistry
I need a single reagent that I could use to distinguish between Pb(NO3)2 solution and Hg(NO3)2 solution.

UOP
Write a response in the form of a memo from Joe Gilmore, Training Department Manager, to Christine Lancaster, Training Supervisor, regarding her idea for the next training series. The memo must not exceed 300 words.

Math
So would it be 7:1

Math
What are the odds in favor of getting at most two heads in three successive flips of a coin? This problem has to be done in ratio not fraction. Can anyone help?

Math-Probability
40000 + 3 + 50 = 13,351 $13,351

social studies
washington commanded the army in this war

Geometry
Any help would be greatful. What is the relationship between the measure of a central angle of a polygon and the measures of an interior and an exterior angle of the polygon?

Math
I am new to this website where is your reply?

Math
In each case, consider what you know about the distribution and then explain why you would expect it to be or not to be normally distributed. I am really having a hard time understanding this. Any help would be great. a. The wealth of the parents of students attending your sch...

Math
So normal distributed is when you can not have a decimal such as 4.3782 (children example) & not normal distributed would be when it is ok to have a decimal

Math
In each case, consider what you know about the distribution and then explain why you would expect it to be or not to be normally distributed. I am really having a hard time understanding this. Any help would be great. a. The wealth of the parents of students attending your sch...

Math
In each case, determine whether the situation calls for a discrete or continuous random variable and explain your answer. Please help! a. The description of the number of children in a family selected at random from families in Ft. Wayne, Indiana b. The net worth of an average...

Math
Is 3/16 a choice. Take 3/4 ton to divide between 4 sidewalks then you must divide the problem. Take 3/4 divide by 4 and you get 3/16. It should take them each 3/16 per sidewalk. 3/16*4=3/4

Trig
never mind. I get it.

Trig
then what's the ending point?

Trig
yes I meant horizontal shift. so PI/6 is the answer?

Trig
How do you find the H-Shift. My problem is y=5 sin(3x-pi/2).

Trig
what is 2 pi over 1/5 reduce to?

chemistry
fuels need a good supply of .... rockets often carry liquid....

chemistry
How many milliliters of 0.155 M HCl are needed to neutralize completely 35.0 mL of 0.101 M Ba(OH)2 solution?

chemistry
How would you prepare 100.0 mL of 0.07500 M AgNO3 solution starting with pure solute?

chemistry
What mass of NaOH is required to precipitate all the Fe2+ ions from 50.0 mL of 0.200 M Fe(NO3)2 solution?

Advanced Biology
Which observation supports the statement that birds are reptilelike animals? a.) bird's front limbs usually do not have useful claws b.) bird's have only two legs c.) bird's feet are covered with scaly skin d.) birds generate their own body heat I think it's c.!

Advanced Biology
I figured it out. It's C. Thanks for the help!

Advanced Biology
If a bird has a hooked bill and sharp talons, it might be a(an): a.) water bird b.) ostrich c.) bird of prey d.) perching bird I think it's a.!

Advanced Biology
At the end of the Cambrian Period, fossil evidence indicated that: A.) a great adaptive radiation of amphibians occured B.) amphibian species reached their greatest number C.) most amphibian species became extinct d.) amphibians first appeared

Algebra 2
3x+40<=x^2

Trigonometry
Given sin x = 4/7 and cos x = negative square root of 33 over 7, find cot x. I think it's square root of 33 over 4!

Advanced Biology
The cells of cellular slime molds bear a resemblance to: a) flagellated cells b) diatoms c) ciliated cells d) dinoflagllates e) amoeboid cells I think it's b!

Math
How do you measure in metric units?

Trig
We started a new lesson on Monday on identities. Our test is tommorrow. I have no idea of what I'm doing! Can somebody help me study?

SCIENCE helppp!!
self=supporting

Trigonometry
Would #7 be Sin- 3 over square root of 73 Cos- 8 over square root of 73 Tan- -8/3 Csc- square root of 73 over 3 Cot- -3/8

Trigonometry
Use the trig Identities to find the other 5 trig functions. Problem 7.)Tan(90-x)=-3/8 8.)Csc x=-13/5 9.)Cot x=square root of 3 10.)Sin(90-x)=-.4563 11.)Sec(-x)=4 12.)Cos x=-.2351 I need HELP!

Civics
What are the benefits of congressional recording studios?

Civics
thanks!

Civics
What steps does the federal government take when attempting to control sensitive national security issues? Would it be that the government attempts to control information about national security by classifying information as secret and by limiting press coverage of military ac...

civics
thanks!

civics
That's suppose to be staions(stattions).

civics
What government agency limits the number of radio and television sattions a single company can own? Would it be the Telecommunications Act?

Advanced Biology
Certain_________ block prokaryotic ribosomes, but not those of eukaryotes. Certain proteobacteria________ nitrogen. The earliest life form may have been a_________ that obtained energy from inorganic compounds. The answers to these fills in a crossword puzzle.

Advanced Biology
What is a monocot and a dicot plant? I have to do a project on my plant. It is a Spotted Chinese Evergreen. Thanks!

Calculus
Integrals: When we solve for area under a curve, we must consider when the curve is under the axis. We would have to split the integral using the zeros that intersect with the axis. Would this be for all integrals? What if we just want to "find the integral", without...

basics and tools of floral design
The most commonly used wiring method is?

Finite Math
Discuss the differences between the echelon method and the gauss-jordan method for solving matrix problems? What are the pros and cons of using a calculator or computer to do these calculations?

Civics
I need help writing a one-page report on the campaign decisions made by Bush and Kerry in relation to their successes and failures.

Math
How do I find the answer of 7(5.2)?

Advanced Biology
How can muscle protein fingerprints be used to study evolutionary relationships among organisms?

Math
A state university wants to increase its retention rate of 4% for graduating students from the previous year. After implementing several new programs during the last two years, the university reevaluated its retention rate. Identify the Type I error in this context. A) The uni...

Advanced Bilology
What are the methods for detecting cystic fibrosis?

Advanced Biology
In a cross of two individuals hereozygous for a single trait, what genotype and phenotype ratios would be obtained?

Advanced Biology
Are the ratios obtained in a dihybrid cross always the same? Explain.

Advanced Biology
Describe how the Principle of Segregation is show in th dihybrid cross of rabbits. I think it would be that each character seperates into a different sex cell.

Advanced Biology
Describe how the Principle of Unit Characters is demonstrated in a monohybrid cross. I thik it would be that individuals pass information on as individual traits.

Governments in the past
what type of Government do we live under in the United States

Governments in the past
why did people long ago form communities

3rd grade
Juan says when you put together unequal groups,you can only add is she correct Explain

Advance Biology
Attacked

Statistics
Im kind of confused on this question?? To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine found in all commercial brands of cigarettes. A new cigarette recently been marketed. The FDA tests on this cigare...

Math
What effect will an outlier have on a confidence interval that is based on a small sample size? A) The interval will be smaller than an interval without the outlier. B) The interval will be the same with or without the outlier. C) The confidence interval will be wider than an ...

English
Thank You...but the teacher said that it all had to be in one email...I still don't understand how that can be done...without giving her personal arrangments out to everyone else. Any ideas?

English
This is what I have so far... TO: Executive staff FROM: Crystal Minckler, Department manager DATE: November 28, 2009 SUBJECT: One-day departmental training seminar arrangements I am taking this time to inform everyone of the arrangements that have been completed for the one-da...

English
You've been put in charge of planning a one-day departmental training seminar with Dr. Melanie Dobler as your speaker. You must make travel arragements for the speaker, reserve a company room large enough for the number of people attending, and requisition any necessary it...

Criminal Justice
First you might want to try and let us know the names of some of the criminals you are trying to find information about. The only thing I could suggest would be to google it.

Statitic
following data values are a simple random sample from a population that is normally distributed, with ssquared=25.0: 47, 43, 33, 42, 34, and 41. Construct and interpret the 95% and 99% confidence intervals for the population mean.

English
Great! Thank you very much for your help. I appreciate it.

English
Okay, so I will change it to Mrs. Talbot. Any other suggestions? Does the rest of it sound okay?

English
Please read this over and let me know if there are any corrections/improvements that I need to change/add..Thank you! Your boss had asked you to set up a meeting with a client, Jocelyn Talbot, for next Wednesday at 2pm. He wants to meet at the King Charles Hotel on River Stree...

Biochemistry
A reaction A<-->B starts with equal concentration of A and B. AT equilibrium, there is twice as much B as A. What was the value of change in Gibbs Free energy when the reaction originally started if the temperature was 300k?

biochemistry
when a reaction A<-->B starts, there is three times as much product as reactant. When it reaches equilibrium, there is twice as much product as reactant. Show how to calculate the standard change in gibbs free energy for this reaction. I did it but I'm not sure if I ...

Biochemistry
A reaction A<-->B starts with equal concentration of A and B. AT equilibrium, there is twice as much B as A. What was the value of change in Gibbs Free energy when the reaction originally started if the temperature was 300k?

math
Multiply to find an equivalent fraction: 3/10

Advanced Biology
I need help finding the terms of each definition. 1.) The "transforming factor" that alters pneumonia bacteria 2.) The three parts of every nucleotide 3.)A pair of these forms a "rung"in the DNA 4.) Used to "label" DNA and protein in experiments

Advance Biology
What is the definition for codon recognition?

Please correct-- spanish!
thanks!

Please correct-- spanish!
Yo vivo en un vecindario pequeño con cinco personas en mi familia. Mis padres les gusta el vecindario pero yo siempre sueno acerca de vivir en una gran ciudad. Todos los arboles son hermosos y ellos ayudan el ambiente pero prefiero edificios y lugares donde puedo ir de ...

Civics
What is the main reason that many cities have not built mass transit systems?

ap us history
how could the trusts purchase a senat seat? what bias did the foounding fathers demostarte in their procedure for electing senators?

apush
how could trusts purchase a senate seat in the late nineteenth century? what bias did the founding fathers demostarte in their procedure for electing senators?

Trig
From a point A on the ground, the angle of elevation to the top of a tall building is 24.1 degrees. From a point B, which is 600 ft closer to the building, the angle of elevation is measured to be 30.2 degrees. Find the height of the building. PLEASE HELP ME!

physics
A centrifuge rotor rotating at 7,000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.30 m·N. If the mass of the rotor is 4.80 kg and it can be approximated as a solid cylinder of radius 0.0710 m, through how many revolutions will ...

college
if the block weighs 855 newtons, what is the tension in the cable going from point A to point C

Trig
3.8 was my answer for the short diagonal. I'm not sure how to find the long diagonal.

Trig
I got 3.8, we round to the nearest tenths.

Trig
I need help with these kind of problems. We are dealing with word problems and/or pictures that are solved by the Law of Sin or Cosine. If any one kows a wonderful web site that can help with these, I would greatly appreciate it. A parollelogram has side lengths 3 and 5, and o...

Trig
Find the area of the triangle. b=125 c=162 <B=40 (b and c are the sides) (<B is the angle)

Advance Biology
What is the relationship between CFCs and the Earth's protective layer?

Advance Biology
I need help writting exactly 25 words to describe the relationship between CFCs and the Earth's protective ozone layer.

Civics
How can I write a sentence using the word lobbying in it?

PHYSICS
A 0.445 kg ice puck, moving east with a speed of 2.82 m/s, has a head-on collision with a 0.918 kg puck initially at rest. Assuming a perfectly elastic collision, what will be the speed and direction of each object after the collision? speed of the ice puck ? Direction: west s...

Civics
Describe how each of the following factors has influenced the Supreme Court. For each, give an example, cite a case, or give an explanation. The Law: The Justices: Society:

Trig
Determine the quadrant in which each lies: sec0<0,cot0<0 sin0<0,tan0>0

Trig
I need help with these kind of problems! Can someone tell me how to work this problem out? Given tan0=2 square root of 5 over 4, and sin0<0. a. cos0 b. csc0 The 0 after tan, sin, cos, and csc stands for angle. The 0 after the < stands for negative or less than. I know it...

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