Friday
April 25, 2014

Posts by Olivia


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...

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