Sunday

April 20, 2014

April 20, 2014

Total # Posts: 400

**math**

how do i get sec70 x cos70 algebraically?

**social studies**

Why is the Michigan lake important.

**dr russ and writeacher **

thanks to both of you for your help. it was kind of you!:)

**ict**

how can companies protect their systems from physical threats such as theft? ive put :- .password .install software which only works for the company

**7th grade**

what is the modern atomic theory

**8th grade**

I need help on this equation: -5(-3n+4)-12=13

**science**

i need to answer these statements true or false:- ive answered some but stuck on others. 1)only animals respire - false 2)respiration uses oxygen 3)respiration uses up carbon dioxide 4)only green plants photosynthesise-true 5)all living things respire- true 6)plants use up and...

**college algebra**

advertising expenditures in the United States were $244 billion in 2000 and $245 billion in 2003. Let x be the number of years after 2000 and estimate advertisting expenditures in 2007.

**physics**

The problem is: You apply your brakes to stop for a traffic light, and you come to a stop in a distance of 35 meters. How much time did it take you to stop? from previous problems, i know: INITIAL VELOCITY: 15 m/s FINAL VELOCITY: 0 m/s ACCELERATION: -3 m/s^2 (because you'r...

**physics**

The problem is: You apply your brakes to stop for a traffic light, and you come to a stop in a distance of 35 meters. How much time did it take you to stop? from previous problems, i know: INITIAL VELOCITY: 15 m/s FINAL VELOCITY: 0 m/s ACCELERATION: -3 m/s^2 (because you'r...

**math**

what is the expanded form of 0.6045

**Physical Education**

What is a simple definition of Social Health.

**Biology**

How does a theory provide a framework for the way scientific investigations are conducted? Identify a theory that served for a time and was then supplanted. Compile what you know about the theory, and the effect of the wrong theory on the way people thought. I really just need...

**tiffany**

what is your last name?

**math**

i need help on my homwrk

**ecology**

Describe how the fish’s respiration rate is affected by temperature and what affect an increase in carbon dioxide in the atmosphere (global warming) would have on our ocean.

**math**

Just kidding! 60m

**math**

6000

**Chemistry**

Never mind! :) I think I see what I need to do. I simply subtract the initial mass from the mass of the compound to get the mass of the Chlorine and go from there. Correct?

**Chemistry**

If I don't know the empirical formula, what am I supposed to use for the relative atomic mass here for xenon fluoride to get moles?

**Chemistry**

Oh, and the answer is A. I just don't understand how you get it.

**Chemistry**

Xenon of mass 5.08 g reacts with fluorine to form 9.49 g of a xenon fluoride. What is the empirical formula of this compound? A) XeF6 B) XeF4 C) XeF2 D) XeF E) Xe2F I am not familiar with these types of empirical formula problems. If I'm given the percentages of the elemen...

**college math**

convert 36in.=_ft

**Religion**

Is it called purgatory when you're in between life and heaven/hell? Thanks.

**math**

what is a domain? what is a range?

**college**

the relationship between the dosage, x, of a drug and the resulting change in body temperature is given by f(x)=x squared(4-x) for 0 greater than or equal to x greater than or equal to 4. make sign diagrams for the first and second derivate and sketch the dose-response curve s...

**algebra**

I'm not sure if this is exactly the answer you're looking for, but I know multiplying something by 1/2 is the same as dividing it by 2. I hope I helped!

**Thank you!**

Thanks!

**Algebra**

Suppose that x = 2-t and y = 4t+7. a. If x=7, what is y? b. If x=-3, what is y? c. Find y in terms of x. I don't know how to solve this, since x and y are in different equations. Could you please walk me through it? Thanks!

**science**

what color can be formed by combining complementary colors?

**Math**

THE GRINCH IS GONNA STEAL CHRISTMAS!!

**Math**

i don't think im qualified to help yu with this question.

**math**

do you know the muffinn man

**math**

i have a serious question for you

**math**

alright yea that was pretty hawtt;)

**math**

oo sorry

**math**

lmao ok calm down im pretty sure its 10 i could be wrong though

**math**

wow. ur really good! =) thank you!

**math**

find the area of this ring to the nearest square unit. Show your work. The image shows a ring, the inside raius is 2.0m, and the outside radius is 3.2m. The area of the ring is... plz help!! thx.

**Math**

thats hawwt. ur welcome.

**Math**

10

**History-Constitution**

okk, thank you!

**History-Constitution**

Yes, but how is a strong central government good- couldnt it be dangerous in a way? In other words, what part of the Consitution was better than the Articles of confederation?

**History-Constitution**

I read the constitution many times, it is hard to understand- how did the constitution address the flaws of the Articles of Convederation? thanks!

**Chemistry**

What are the names of all the classes of substances that conduct electricity?

**math**

thanks a lot, so is the answer those numbers added up?

**math**

in a high school there are 27 hockey players and 15 soccer players. if 8 persons played both sports, how many different people played in these sports.

**college chemistry**

what is the correct answer for this?

**AP World History**

my thesis is:In spite of both the Roman and Han government involvement in technology, during the classical period the Romans had a more neutral/negative attitude whereas Han China had a positive view towards crafts people. is that ok?

**Math**

no, but i mean how do you factor the probability of 4 instead of just 1?

**Math**

i mean, I know how to do 1 like the probability of getting paired with someone but how does the 4 come in?

**Math**

Probability -if desks are grouped by 4 and if there are 11 boys and 13 girls in a class what is the probability that I will get placed in a group of all girls?

**9th grade**

yes, that's right

**6th grade com arts**

i just don't understand what it means to write the answer words, sorted by suffix

**6th grade com arts**

we had to do anzlogies i.e. ball : bouncy : glue : sticky The next part is "sort the answer words by suffix" What does that mean?

**Com Arts**

I think it is cities

**Com Arts**

I have the same question as Jake... trees : leaves : states : ? The answer has 6 letters, the thirs letter being a "t". Does anyone know?

**spanish**

are there any web sites that offer online quizzes with immediate answers?

**Math**

24?

**Math**

would the answer be 24:36?

**Math**

Last week, Marcia played goalkeeper for her hockey team. She stopped 20 out of 30 shots on goalm . This week, marcia faced 36 shots. She stopped shots on goal in the same ratio as the previous week. How many shots did marcia stop?

**social studies**

are you sure?

**social studies**

why would it be important for a pharoh to unite upper egypt and lower egypt

**6th grade math**

2x16-12+5=15

**writing**

When writing a essay. How many spaces after a . after , "Is this correct".

**literature**

In your opinion, what are today's epics?

**english**

edit for correct pronoun. we expected the concert to last for at least two hours. since the average ticket sells for twenty dollars, this was not being unrealistic.

**math**

it would be 36. Area= base x height. In a square, base and height are the same. 6x6 = 36.

**Physics**

What is the energy of this type of radiation: 6.32 x 10^20 s^-1 ?

**Physics**

What is the speed of an electromagnetic wave that has a frequency of 7.8 x 10^6 Hz? How would I solve this problem?

**Physics**

Ok so I think I have this correct, but I'm not sure. The question is: what is the frequency of green light, which has a wavelength of 4.90 x 10 ^-7 m? Since all electromagnetic waves travel at 3.00 x 10^8 m/s (c), and c= wavelength x frequency, The problem is: (3.00 x 10^8...

**science**

what happens to microbes when they are packed in food tins?

**math**

Does anyone know what |-11| means?

**Chemistry**

Please help me break this problem down.. Thanks lot. Light with a wavelength of 425 nm fell on a potassium surface, and electrons were ejected at a speed of 4.88 X 10^5 m/s. What energy was expended in removing an electron from the metal? Express the answer in joules (per elec...

**math**

1.What is the probability Megan will develop the symptoms of Huntington’s disease? (Assume her mother was hh.) Show the sample space.--50% 2.What is the probability that their first child will develop Huntington’s disease?--25% chance having disease, 75% chance doesn...

**math**

Consider yourself a genetic counselor. Megan and Eric come to you for your services. They are planning on having their first child. Megan’s father died from Huntington’s disease. Eric’s family has no history of Huntington’s disease. They would like to have ...

**Homework**

Mike, Bobby, Olivia, Lila, Alex, Veronica, Amanda.... Sorry for the confusion.

**Homework**

We, my roomates and I, keep getting replies saying stop posting under more than one name. We are not posting under more than one name we are all different. We all live together and only have this common computer at the moment, but we are more than one person and we love this s...

**biology**

You are cheating!!!! answer that friggin' easy question yo' self!!!!!!!!!!!!!!!

**physics**

Does anyone know what this is about? please help I would be more than grateful.. How does Rutherford’s model of the atom account for the back – scattering of alpha particles directed at the gold leaf

**marketing assessment**

design a marketing plan for one of the following types of product

**globe school for environmental Research**

How are igneous rocks form

**music**

why is sonata-allegro considered to be dramatic and rewarding?

**Math**

7a-8 =15a + 8 add 8 to both sides 7a = 15a + 16 subtract 15a from both sides -8a = 16 divide by -8 a= -2

**Physics**

Could someone help me on how to put this all together. Atomic physicists ignore the effect of gravity within an atom. To see why, calculate and compare the gravitational and electrical forces between an electron and a proton separated by 10-10m. Im confused ok i have that the ...

**Physics**

what? i know the masses yes not sure about the charge. . . but the fromula i have is f=k g1f2/r^2 so And all these numbers are something to the power of something else how do i work that out?

**Physics**

Im confused ok i have that the mass of a proton is 1.6726231 x 10^-27 and the mas of an electron is 9.1093897 x 10^-31 charge of an electron is 1.602 x 10^-19 what do i do with all of this, is g1 the charge of the proton g2 the charge of the electron? what is d is that 10 m?

**Physics**

Someone please help me, I am having the worst time understanding this problem. Where do I begin? Atomic physicists ignore the effect of gravity within an atom. To see why, calculate and compare the gravitational and electrical forces between an electron and a proton separated ...

**Biology**

What are needed for humans to be able to digest?

**Chemistry**

Suppose you are studying coordination compounds of Co(II) with the ligand pyridine (py, C5H5N, MW = 79.10). You isolate a crystalline compound and since the only available ions are chloride and nitrate, you hypothesize the empirical formula of the coordinaton compound must be ...

**looking up a state**

I would like to look at bugs in Iowa and see the type of houses they live in also I would like to see how they live in that type of weather there. http://www.extension.iastate.edu/Publications/IAN606.pdf http://www.etenson.iastate.edu/publications/IAN606.pdf

**SCIENCE - Pls HELP**

A proton (with a mass, mp = 1.673 x 10^-27 kg & electrical charge, e = 1.602 x 10^-19) and an electron (with a mass, me = 9.109 x 10^-31 kg & electric charge -e = -1.602 x 10^-19) are not moving & at a distance of 1.000 x 10^-10 m apart.... (assuming the electrical constant, k...

**chemistry**

ACCORDING TO THE OCTET RULE, CALCIUM HAS THE TENDENCY TO DO A. LOSE ONE ELECTRON B. LOSE TWO ELECTRONS C. GAIN ONE ELECTRON D. GAIN TWO ELECTRONS

**Math**

Using the intersection method, I need to solve the following equation: 5x-3.3=x-2.1 Can you point me on the right path? you have to get x's on one side, and the numbers on the other. then solve for x. Kira, Thank so much for your help, but how do you graph the equation to ...

**algebra**

(2x+1)-(X-1)= to get rid of the second set of parentheses, you have to mulptiply by -1...so the x becomes -x and the -1 becomes 1. So, its 2x + 1 - x +1 = x + 2

**Music**

Why is sonata-allegro form considered to be dramamtic and rewarding?

**algerbra 1**

what is the answer to 5x-16=14-5x Just giving you the answer is not what this forum is about. We'd be defeating the purpose of you assignment by doing that. Try to work the variables to one side, say the lefthand side, and the numbers to the other side. Add 5x to both side...

**Math [Probability]**

78125 bricks

**saxon 65**

how many minutes is one third of an hour An hour is 60 minutes. What is one third of 60 minutes? I hope this helps. Thanks for asking. 20

**Metric System**

I have two queations that have to do with the metric system: 1- What connections can you identify between the metric units for length and volume? 2- Why is it difficult to convert miles to yrads or feet? Thanks in advance for your help! 1- What connections can you identify bet...