# Posts by nina

Total # Posts: 650

**math**

(h)t=-4.9t^2+98t+8 Find the max height?

*January 2, 2013*

**math**

Each wall of a square meeting room is 40 feet long. If loudspeakers are placed 20 feet apart around the room, how many loudspeakers are in the room?

*December 18, 2012*

**Math please Hurry !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!**

Choose the correct answer. Milo wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add to a juice that is 20% lemon juice and 80% lime juice to make 4 gallons of the 50% lemon/50% lime juice mixture? (Points : 1)

*December 10, 2012*

**The Age Of Jefferson To The American Expansion**

10 is d 12 is a 13 is a 20 is d took the test and got these right i looked up all the answers and got them right i just had a little different questions than you so hope this helps a little

*December 7, 2012*

**psychology -statistics**

why can we use the same multiple comparison procedures for between subjects, repeated measures, and mixed designs without changing the formulas

*November 30, 2012*

**Statistics**

Explain how the error term in a repeated measures ANOVA is actually an interaction

*November 30, 2012*

**Statistics**

Explain how the error term in a repeated measures ANOVA is actually an interaction

*November 30, 2012*

**Math**

Miss Mary bought 2 liters of coke, 3 times as much Pepsi and 5 liters of sprite. How many liters of soda did she purchase?

*November 27, 2012*

**Physics**

two equal charges exert an elecrtric force on each other of 0.0385N when positioned 0.15m apart determine the magnitude of the charge on each point.

*November 26, 2012*

**science**

what is a gradient

*November 26, 2012*

**reading**

Yes, i did c for number too but it turned out to be a b the other were correct they are all b. Trust me, if you don't trust me get it incorrect and see I was telling the truth.

*November 25, 2012*

**reading help me pls :(**

Don't you need to have read the book or story to do these questions?

*November 17, 2012*

**Ms. Sue can you answer this please**

Damon's expertise it too expert for my knowledge and math level thank you though Ms Sue.

*November 17, 2012*

**Ms. Sue can you answer this please**

Damon had answer, but i just want to see if you'll explain it differently... The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?

*November 17, 2012*

**Please Help! Quadratic Eqautions**

yes thank u but i don't understand simplified form please!!

*November 17, 2012*

**Please Help! Quadratic Eqautions**

The population of a town P(t)is modelled by the function P(t)=6t^2+110t+3000, where t is time in years. Note t=0 represents the years 2000. When will the population reach 6000?

*November 17, 2012*

**Please Help! Quadratic Eqautions**

too*

*November 17, 2012*

**Please Help! Quadratic Eqautions**

Honestly, although i appreciate this help Is there any other way to do this problem. I think this is a little to advanced because i really don't understand it.

*November 17, 2012*

**Please Help! Quadratic Eqautions**

Thank you Much Appreciated !! (Y):)

*November 17, 2012*

**Please Help! Quadratic Eqautions**

oh ok

*November 17, 2012*

**Please Help! Quadratic Eqautions**

The question doesn't state wheater it's a max or min it'as grade 11 math no I have not done calculus

*November 17, 2012*

**Please Help! Quadratic Eqautions**

P(t) = 6 t^2 + 110 t + 3000

*November 17, 2012*

**Please Help! Quadratic Eqautions**

oh i'm sorry. i left out that part.. the question is When will the population reach 6000?

*November 17, 2012*

**Please Help! Quadratic Eqautions**

The population of a town P(t)is modelled by the function P(t)=6t+110t+3000, where t is time in years. Note t=0 represents the years 2000.

*November 17, 2012*

**math**

Thank you

*November 13, 2012*

**math**

How many feet are there in 156 inches? Would I do 156/12

*November 13, 2012*

**chemistry**

a photon has 3.3 *10-19 joules of energy. what is the wavelength of this photon?

*November 9, 2012*

**Math**

John ate some pie for lunch. He left 2/3 of the pie. Jerry ate 1/2 of the remaining pie. How much pie did Jerry eat?

*November 8, 2012*

**math**

a farmer has cows and chickens. he has a total of 20 heads and 64 legs. How much of each animal does he have?

*October 25, 2012*

**Math 142**

800 hundred chances are sold at $2 apiece for a raffle. There is a grand prize of $650 dollars, two second prizes of $250, and five third prizes of $50. First calculate the expected value of the lottery. Determine if the lottery is a fair game. If the game is not fair, ...

*October 19, 2012*

**art**

hundert wasser

*October 13, 2012*

**math**

danke denise ich weisst auch die

*October 12, 2012*

**deutsch**

ich vesteh deutsch.

*October 12, 2012*

**mathe**

thank you

*October 12, 2012*

**phisyc**

wer kann deutsch

*October 9, 2012*

**math**

a ball is thrown upward at 64 feet per second from the top of an 80 feet high building. The height of the ball can be modeled by S(t) = -16t^2 + 64t + 80(feet), where t is the number of seconds after the ball is thrown. describe the graph model

*October 7, 2012*

**Statistics**

What is the probability that we would obtain two sample means that differ by 1.875, when the SD of the sampling distribution is estimated at .125 when our sample has 8 subjects?

*October 7, 2012*

**statistics**

How is the standard error of the mean influenced by sample size and standard deviation?

*October 6, 2012*

**math**

how to solve a quadratic equation in one variable ? plsss

*October 6, 2012*

**American History**

okay i took the test and made a 100 some of my questions were different so ill just give the ones that are the same cause some are incorrect question 2 is b question 3 is d question 9 is d question 13 is c question 14 is d question 18 is c now like i said i took the and made a...

*October 1, 2012*

**Geomatic Sequence**

In a geomatic sequence, the seventh term exceeds the fifth term by 1920. Find the sum of the first eleven terms if the common ratio of the sequence is 2.

*October 1, 2012*

**Arithmetic Sequence**

Given the third term of an arithmetic sequence less than the fourth term by three. The seventh term is two times the fifth term. Find the common difference and the first term.

*September 30, 2012*

**biology**

What structure in the moss is like the spore case in ferns?

*September 26, 2012*

**ECON 3**

A manufacturer of television sets trims sets in either black or grey and uses either a walnut or a maple stain. A consumer survey showed that 20% of consumers wanted a black trim with a walnut stain and that half of all consumers wanted a black trim or a walnut stain. If it ...

*September 19, 2012*

**ECON 2**

False signals. A procedure has been designed that will detect 99% of the defective assemblies in a manufacturing process. However, the probability that the procedure will declare a good assembly defective is 0.05. If 2% of all assemblies are defective, what percentage of the ...

*September 19, 2012*

**ECON**

A bank vice-president declared that the probability that the bank’s funds were being embezzled was 0.70 and that the probability that an embezzlement would be discovered by the bank examiner was 0.90. Given that the bank examiner does not find the embezzlement and that ...

*September 19, 2012*

**math**

Yolanda is putting up a fence for her dog in the shape of a square. Each foot of fencing costs $7. If Yolanda is planning to have each side of the fence be 10 feet long, how many feet of fencing will Yolanda need?

*September 19, 2012*

**Math**

@Mikayla why do you even go on this site? To make sure we feel bad for asking for help? There's nothing wrong about asking for help and there is no need for you to be so rude. If you have a problem keep it to yourself.

*September 5, 2012*

**Scientific Question**

Please help me check if I did my homework right base on a picture of picking strawberry farm. 1. Activity Investigation Picture Scientific Method: I. Perceiving the Problem Are these people a worker in a farm? II. Research a. Wearing different style of clothes b. Different ...

*September 4, 2012*

**Maths**

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=Ae^kt where A and k are constants. With the aid of appropriate examples, explain how the growth of P over ...

*July 30, 2012*

**Maths B - Population Growth**

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=¡¼Ae¡½^kt where A and k are constants. With the aid of appropriate examples, ...

*July 30, 2012*

**Maths B question - population**

The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P = Aekt where A and k are constants. (a) With the aid of appropriate examples, explain how the growth of P ...

*July 28, 2012*

**What does this Maths B question mean?**

How do I do thi question? An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the task(...

*July 28, 2012*

**Explanation of Maths B Question**

An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the task(outlined on the next page...

*July 28, 2012*

**Explanation of Maths Question**

Can someone please explain what does these questions mean? Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, ...

*July 28, 2012*

**11 Maths B**

Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, with the axis of the design running along the x-axis

*July 28, 2012*

**History**

Discuss the differences and similarities in post-independence policies in India and Egypt. Please help me with this question If you could give me a little summary of each country it would be amazing. Its the only q I have left on this assignment.

*July 23, 2012*

**oraintation**

How will you apply these concepts in your educational, personal, or professional pursuits?

*July 8, 2012*

**Science**

1.The estimated doubling time for the black sea urchin population is approximately 1.5 years. What is the annual growth rate of the urchin? help please?

*June 29, 2012*

**math**

$742.50 $216.00

*June 26, 2012*

**Chemistry**

A student completes titration by adding 12.0 mL of NaOH(aq) of an unknown concentration to 16.0 mL of 0.15M HCl(aq). what is the molar concentration of the NaOH(aq)?

*June 7, 2012*

**Social Studies**

The last of Wilson's fourteen points called for

*June 1, 2012*

**Chemistry**

Thanks!

*May 30, 2012*

**Chemistry**

Find the molarity of [H+] and [OH-] in the following solutions: a) 0.050 molar NaOH b) 2.09g of calcium hydroxide in 100 mL of water c) 0.875 M H2SO4

*May 30, 2012*

**Chemistry**

That is super helpful, thanks. I missed a two days of class when we learned acids and bases, so I was a bit stuck.

*May 30, 2012*

**Chemistry**

100.0 mL Vinegar (d=1.06g/mL) contains 4% acetic acid. a. How many moles of acid are in 100 mL of vinegar? b. How many mL of 0.11 M NaOH are required to neutralize the vinegar?

*May 30, 2012*

**Chemistry**

Alright, sure. #9. 2H2O -> 2H2 + O2 15g H2O/1 x 1mol/18.02 = 0.832 mol H2O PV=nRT (98.9kPa)(v)=(0.832mol)(8.31 kPaxL/molxK)(290.2K) v=20.29L #11. 12.01g/gC x 100=49.48% 24.27gC/1 x 1mol/12.01g=2.02mol C 1.01g/gH x 100=5.15% 19.61gH/1 x 1mol/1.01g=19.42mol H 14.01g/gN x 100=...

*May 30, 2012*

**Chemistry**

Test corrections :) They're calculations/short answers. I'd just like something to compare answers to or help me get the full answer (all partial credits). Thanks! #9. When water is electrolyzed it produces hydrogen and oxygen. If 10.0% of 150.0g of water is ...

*May 30, 2012*

**Chemistry**

It's a molar heat reaction lab. 0.07g Mg Mg+2HCl->MgCl2+H2 What is the actual value for the heat of reaction based on the enthalpy's of formation? HfHCl= -118.53 kJ/mole HfMgCl2= -774 kJ/mole

*May 15, 2012*

**A Stop Sign**

is it an index, symbol or an iconic sign?

*April 25, 2012*

**History**

I'm doing a project on name change in south africa so I'd like to know why the name pretoria was changed to tshwane and why did they change it to tshwane??? and why Pietersburg was changed to polokwane and why did they change it to polokwane

*March 21, 2012*

**Biology Science**

Plankton, Fish, Crab, Shark. Plankton, Crab, Fish, shark. Depends on which fish and which crab. XD

*March 5, 2012*

**english**

There are many situations where one should say no. For example, imagine if a clumsy, crazy, annoying, creepy, stranger asks you on a date. Even though you don’t want to hurt his feelings just say no would this be an okay way to start?

*March 4, 2012*

**english**

I need ideas on how to start the paragraph.

*March 4, 2012*

**english**

I need help writing an illustration paragraph on the topic: saying no. I have to include the following devices 1 acyndeton, 1 polysyndeton, 2 interrupted movement, 2 parallel, 1 freight-train

*March 4, 2012*

**Business Studies**

I'm Studying For My Business Cycle Test and I'm finding it for hard to remember all the elements of the micro market and market environment so I was just hopeing someone could have like a catchy sentence for the elements in each environment e.g takeing the begining ...

*March 4, 2012*

**writing**

"Part 1: Write an exploratory essay in which you compare and contrast online learning with classroom (on-ground) learning. Your evaluation may include preparation time, rewards, pitfalls, etc. You may select the features that you want to compare and contrast. • Using...

*March 2, 2012*

**math**

What he did wrong is that William did not multiply the 1,000-gram by 1.

*March 1, 2012*

**math**

The 5th grade marching band includes boys & girls. There are 28 boys in a marching band. The boys are 7/10 of the students in the marching band. What fraction of students in the marching band girls? What is the total number of students in the marching band?

*February 24, 2012*

**MATH**

Carolyn and Kim are selling lemonade this summer. It costs $0.10 to make each cup of lemonade. They are going to sell each cup of lemonade for $0.25. What is the least number of cups of lemonade they need to sell in order to collect $10.00 more than they ...

*February 20, 2012*

**MATH**

PLZZZZZZ! I NEED THIS ASAP

*February 20, 2012*

**MATH**

Carolyn and Kim are selling lemonade this summer. It costs $0.10 to make each cup of lemonade. They are going to sell each cup of lemonade for $0.25. a. What is the total cost to make 55 cups of lemonade? Show or explain your work.$5.50 b. If they sell 55 ...

*February 20, 2012*

**Writing**

I'm Writing a Discursive Essay on the topic "is it more difficult to be a young person today then it was 50years ago", I have these main points: "we have technology but its brought us media pressue" "Better education system but with more pressue to...

*February 19, 2012*

**I need Help!**

An Example of where a difficult academic challenge would confront you in school? And how would you deal with it?

*February 5, 2012*

**Math**

List these numbers from least to greatest: 4 over 5,3 over 5,and 3 over 4 Please help me with a cherry on the top!!!

*February 1, 2012*

**math**

kevin says that 22 over 30 is greater than 22 over 32.Do you agree?Explain.

*January 31, 2012*

**math**

Explain how you can tell 26 over 100 is greater than 1 over 4????

*January 31, 2012*

**Math**

Which set of ordered pairs has point symmetry with respect to the origin (0, 0)? (5, 4), (-5, 4) (5, 4), (-5, -4) (5, 4), (5, -4) (5, 4), (4, 5)

*January 17, 2012*

**math**

Which set of ordered pairs has point symmetry with respect to the origin (0, 0)? (5, 4), (-5, 4) (5, 4), (-5, -4) (5, 4), (5, -4) (5, 4), (4, 5)

*January 17, 2012*

**math**

Two angles are complementary. One angle is twice the other. The largest angle has a measure of what. 120, 60, or 45

*January 15, 2012*

**chemistry**

please help me

*December 16, 2011*

**chemistry**

Hi I am in AP Chemistry and I did not take regulars chem so I have never done labs before and was wondering If anyone could give me examples on how to do a lab

*December 16, 2011*

**Physics**

help me, AP physics on part C!!!!!

*November 27, 2011*

**chemistry**

calculate 5.7 grams PbCl2= ions Cl-1

*November 14, 2011*

**algebra**

is the ordered pair a solution of the inequality? (6,15); 8y-9x>8

*November 11, 2011*

**music**

#26 Dikrayati #12 John Howatt #25 Mozart, Piano Sonata in A Major, No. 11 (K.331). (Use the Theme and first Variation only. Note that the first Variation has sounds of Turkish March Music. The first Variation ends when a rumbling bass stops at a cadence. This signals the close...

*November 5, 2011*

**statistics**

Suppose that a researcher is interested in estimating the mean systolic blood pressure, , of executives of major corporations. He plans to use the blood pressures of a random sample of executives of major corporations to estimate . Assuming that the standard deviation of the ...

*October 30, 2011*

**physics**

nmgh

*October 30, 2011*

**math**

let w represent the number of words and m represent the number of minutes. Write a rule to show the relationship between w and m. 280 words in 8 mins

*October 15, 2011*