# Posts by Alex

Total # Posts: 3,726

**MWS**

In recent times, Latin American countries have tried to improve their economies by forming these. Need help

**French, foreign languages**

Hi, Can you please check my sentences to see if I have the used verbs that are in the conditional correctly and also if they do not make sense tell me what I did wrong and if possible tell me what corrections I should make. Here are my sentences and the questions: Dans un ...

**French, foreign languages**

Hi, I desperately need help with double object pronouns in French. Here are questions that I am working on and I can't make heads nor tails of them: L'agence de voyages a envoyé les billets d'avion à mes parents. Mes parents ont acheté de ...

**French, foreign languages**

What verbs are in the conditional in French as I need it for an assignment that I am working on: 1.Dans un monde idéal, il n'y... 2. Vous n'avez pas d'argent? À votre place (In your place), je/j'... 3.On n'a pas cours lundi. On... 4.Dans un ...

**MWS**

well then thanks for the help i think i got it from here

**MWS**

because there were more job opportunities

**MWS**

Why has the sunbelt experienced growing populations over the past decades?

**French, foreign languages**

Here is what I think number 2 is : Mes parents achete les leur a mi soeur et a moi. For number 3 I have: Nous avons demande les leur visas aux différents consulats.

**French, foreign languages**

Hi, I desperately need help with double object pronouns in French. Here are questions that I am working on and I can't make heads nor tails of them: L'agence de voyages a envoyé les billets d'avion à mes parents. Mes parents ont acheté de ...

**science**

) If an ocean is opening at a rate of 5 cm/year and it has been doing so at the same rate for 10 million years, approximately how wide is that ocean?

**Math**

Cheers Steve.

**Math**

If f and g are functions defined for all real numbers, and f is an odd function, then f ∘ g is also an odd function. Justify. I wrote false cause for example if f = x^3(odd) and g=x^2(even) the fog is even.

**Physics**

A race car travels on a flat circular track at the maximum possible speed without slipping. If the radius of the track is 39m and the coefficient of friction is 0.73, how long (seconds) does it take the race car to complete 5 laps?

**math**

balance on an initial investment of $1,500 over 25 years at 5% APR. After 10 years about how much interest has the investment earned

**6th Grade World History Help Please!**

the answer is B

**Calculus**

Describe the solid whose volume is represented by the following definite integrals. The integral of 2pi(x-1)e^x from 2 to 7.

**Social Studies**

opps wrong disscution

**Social Studies**

ok ok ok ok i did read

**language arts**

not going to help anymore bad at helping people at least i tried

**language arts**

iris is my sister

**language arts**

now i am getting really confused

**language arts**

no this is alex

**language arts**

i agree it is awesome but the ending i was just made

**language arts**

opps wrong name

**language arts**

do you still want to learn more about it

**language arts**

never mind i still have the book

**language arts**

i consider it as horrible ending becasue there is no series and i do not have the book anymore although i wish i did

**language arts**

well in the book it says that well i think it had said that it is inportant so he does run away but with the younger brother then at the end it has a horrible endng

**Social Studies**

United States that American settlers were destined

**French, foreign languages**

Salut, I am taking French 20 through ALDC via VHLCentral and I am having trouble with 5 questions of Lesson 2B-Enregistrez. I have the answer for question 1. But for the other 5 I do not have a clue can someone please help me with this? If someone has done this course in the ...

**Math: 5th Grade**

A florist had an equal number of red and yellow tulips. She sold 624 red tulips. Then she had 4 times as many yellow tulips as red tulips. How many tulips did she start with? You must use a bar model to solve this problem.

**Math**

prove: sec^2(x)=1+tan^2(x)

**Math**

'Write as a piecewise defined function.'

**Math**

Can someone please help me with piecewise functions. I know what they are but when it gets to advanced i have ttrouble. s(x)= /x-2/ + /x-3/ + /x+1/ (/ / = 'modulus') Write as a piecewise defined function. Have no idea tbh. Thanks

**art**

setting up a photograph to control the lighting, the subjects position, and the angle of the photograph is an example of which artistic technique A.) improvisation B.) staging C.) photo editing d.) cropping

**Physics**

On a flat golf course, a golf ball lies 12m from the base of a lamp post. A golfer hits the ball with a club, giving the golf ball an initial velocity of 18 m/s. At 2.9 seconds, after being hit, the golf ball strikes the top of the lamp post. How high (m) is the lamp post?

**chemistry**

how many grams of solid magnesium nitrate should be added to 5.0 grams of solid sodium nitrate in a 500 mL volumetric flask in order to produce an aqueous 0.25M solution of NO3- ions (once the flask is filled to the 500mL volume line)? No idea where to start for this question.

**Foreign language, French**

I also need help understanding what the speaker for Lesson 4A Decrivez is saying because she kind of mumbles and I can't catch it. If someone is currently doing the course ( the course is French 2) that will be ideal but any and all help I will find acceptable. Thanks (Merci)

**Foreign language, French**

I need help with speaking portion of the VHL Central Lesson 2B Enregitrez as I can't really hear the speaker quite properly. If someone is currently doing the course ( the course is French 2) that will be ideal but any and all help I will find acceptable. Thanks (Merci)

**Math**

It did help but not sure if they are two different experiments cause your are comparing the effectiveness of each weed killer. Also not really sure on how to draw the flow chart for the design.

**Math**

And what if i'm having problems cause i did not attend class for these? Anyways From what i can figure out: a) The explanatory variables would be the actual weed killers (A and B) and the different type of weeds themselves... so two explanatory variables ?.. weird? ...

**Statistics**

So can you confirm if this is good enough? (4marks) Sample size is a very important factor in terms of the test of significance. Increasing the sample size increases the power of a significance test. Here the 'power' of a significance test measures its ability to ...

**Statistics**

The interpretation of a test of significance can depend on the sample size and the practical context of the test. Write a short explanation of how sample size can affect the decision about statistical significance and whether or not the result is of any practical significance.

**Physics**

An object is placed 20.0 cm to the left of a convex lens with a focal length of +8.0 cm. Where is the image of the object? A)28 cm to the right of the lens B)13 cm to the left of the lens C)13 cm to the right of the lens

**help**

The sum of two numbers is 20. One number is 3 times the other. Find the numbers.

**math**

The Bishop's Peak 4-H club is having its annual fundraising dinner. Adults pay $35 apiece and children pay $20 apiece. If the number of adult tickets sold is twice the number of children's tickets sold, and the total income for the dinner is $1,890, how many of each ...

**math**

2 N 11D ?

**math**

Diane has $1.20 in dimes and nickels. She has a total of 13 coins. How many of each kind does she have?

**mathematicalmodel**

This is very true, I haven't got the answer, but the exam finishes today. I am not interested in using it to pass, but I would like to see the working (if possible, when the exam is finished!)

**mathematicalmodel**

I can not figure this out! has anyone got it?

**physics**

Work=change in potential energy therefore W=mgh = 75kg*9.8m/s^2*1.75m = 1286.25 J

**Calculus**

The following definite integral gives the area of the region between the graph of the function f(x) = Icosx - x^2I (I=modulus), the x-asis, and the lines x=-2 and x=2. the integral of mod cosx - x^2 from -2 to 2. Describe a different region whose area is given by this integral...

**Calculas**

and this got me to Galagan's answer of 4*pi... but still not sure so don't take my answer for it Galagan.

**Calculas**

hhmmmm... i used the equation v=integral of pi*y^2 from a to b.

**Math**

Simplify -5x-5y+3+x+2y-3.

**Computer science**

Write the pseudocode for a method that receives as input the cost of a meal, and then adds a 9% tax rate, and then outputs a 15% tip on top of the price+tax

**Science**

When a water wave with a positive amplitude of one meter meets another water wave with a negative amplitude of one meter, what will be the result? Explain.

**Science**

What is the formula for the frequency of visible light? Using this formula, explain what will happen to the frequency when yellow light (580 nanometers) is slowed down slightly when it passes through a crystal.

**life orientation**

Alien & Sedition Acts.

**Chemistry**

A voltaic cell consists of an Mn/Mn2+ half-cell and a Pb/Pb2+ half-cell. Calculate [Pb2+] when [Mn2+] is 2.1 M and Ecell = 0.13 V.

**history**

What geographical advantage does the Italian landscape have over the Greek landscape?

**history**

How long did the Byzantine Empire last?

**science**

How much heat is added to 10 g of water when you start from room temperature and heat it to its boiling point?

**Social Studies Please Help!!!**

That makes a lot more sense....

**Social Studies Please Help!!!**

My reasoning behind changing my name was to see if alphabetic order mattered, but it doesn't..... just wanted to let you know....(=

**Social Studies Please Help!!!**

(=

**Social Studies Please Help!!!**

1) Which of the following most directly made possible the Age of Exploration? A) hydropower B) caravel C) aqueduct D) wind turbine 2) Which region of Western Europe experiences an arctic climate. A) the Iberian Peninsula B) Italy and Greece C) the British Isles D) Northern ...

**Chemistry**

One mole of N2 and 3 moles of H2 are placed in a flask at 375 degree celsius.? Calculate the total pressure of the system at equilibrium if the mole fraction of NH3 is found to be 0.21. The Kp for the reaction is 4.21 x 10 raise to -4

**Science**

The effect _______ explains how fast air moves across a surface, the ____ pressure that presses on that surface. In contrast, the more ____ that air moves, the more of _____ there will be. I'm sorry that it might not make sense, I translated it from French. I tried using ...

**Math**

Hi again. Just realised that i got B wrong. So it means i need that too. Just to clarify (b) Show that if x and y are related by the equation √x + √y = 1 then dy _____ dx= -√(y/x) _ _ I got -√y/-√x.

**Math**

In this problem we consider drawing some straight lines which form a nice pattern. Consider joining the point (0.1,0) to the point (0,0.9) by a line segment; then joining (0.2,0) to (0,0.8) by a line segment; and so on. In general, consider joining the points (a,0) and (0,b) ...

**history**

Gaul is the Roman term for what modern country?

**Math**

7. You are having a discussion about sequences with your classmate. She insists that the sequence 2, 3, 5, 8, 12 must be either arithmetic or geometric. Is she correct or incorrect? Explain.

**AP Chemistry**

The thing is I tried the negative p delta v on my UT homework, and it didn't accept so I thought maybe moles had something to do with it. Unless I was doing the equation wrong.

**AP Chemistry**

How much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 5.1 liters against a constant external pressure of 0.0100 atm? Answer in units of J. I get w=-p(deltaV) but what about moles?

**6th grade math**

Chris has made the following grades on five math test. 90,74,86,75,94 What score must Chris earn on the next math test to have a test average of exactly 85?

**6th grade math**

While battling a forest fire , Samuel was only able to get three hours of sleep during the first day. What was the percent of the day was Sam awake F. 87.5% G. 37.5% H. 90% J. 10%

**5th grade math**

As of july 2004, the population Was 293,027,571 if more than half of these peaple live within 80 kilometers of an ocean,about how many peaple live within that distance show your work

**Algebra 1**

My answer is 27 sqrt 15y^2

**Physics**

A spring of length 10.0 cm and spring constant 160 kN/m is compressed to a length of 4.00 cm. If, when released, it pushes a block of mass 100 kg, a) what is the speed of the block after it slides up a 15.0 cm hill? b) What is its speed after it falls into a 10.0 cm dip?

**Math.**

5 is d

**ttu**

The triprotic acid H3A has ionization constants of Ka1 = 2.5× 10–4, Ka2 = 3.4× 10–8, and Ka3 = 5.4× 10–13. Calculate the following values for a 0.0760 M solution of NaH2A

**chemistry**

how many electrons can n=4 l=1 have?

**Spanish**

in that case if you are referring to a specific cafeteria like the school's cafeteria it would be "la comida de la cafeteria no es saludable" if not then "la comida de cafeteria no es saludable"

**Spanish**

Are you going to write it with in a sentence or by itself?

**ela help me on this please damon,reed,writeacher**

"inappropriate" lol'd

**Finance - Loans problem**

Late, I know but the answer is 3073.23

**Trigonometry**

Solve each equation, giving a general formula for all of the solutions: a. 2sin^2(x)-5 sin(x)-3=0 b. (cos(x)-((sqrt2)/2))(sec(x)-1)=0

**Trigonometry**

Solve each equation for theta, giving a general formula for all of the solutions: a. tan(theta)=-1 b. sin(theta/2)=1/2

**English**

i don't know

**English**

During our summer vacations, we would always go out to our cabin by Butterfly Creek. The trips were always fun and relaxing. We would take hikes, photograph the wildlife, and swim in the river. Wildflowers in high meadows. Butterflies hovering. I still remember the smell of ...

**science**

based on the masses of CaCl2 and Na3PO4 you determined from the periodic table, what mass combining ratio would you predict?

**Chemistry**

If there are 57.6 mL of water that change from 19.4 degrees Celsius to 34.7 degrees Celsius, calculate the number of joules of energy transferred in the form of heat. Round to the nearest whole number. The specific heat capacity of water is 4.18 J/g*C and density of water is 1...

**Economics**

1. What determines the size of the key-money payments that landlords demand (and tenants offer) for the right to rent a controlled apartment? 2. Who, other than the owners of rental units, loses as a result of rent controls? Who gains from rent controls? What effect would the ...

**geometry**

225

**business math**

Stereo Inc. sells a stereo system for $500 down and monthly payments of $60 for the next 4 years. If the interest rate is 1.75% per month, find: a) The cost of the stereo. b) The total amount of interest paid.

**French, foreign language**

Read each definition and write the appropriate word or expression in the space provided. 1. C'est un plat typiquement français. On les prépare avec du beurre et de l'ail. Ce sont un escargot . (incorrect) 4.On les utilise pour faire des omelettes. Ce sont...

**French, foreign language**

Hi, I need help with answering some questions for French Here's my work on them tell me what you came up with for each question that is incorrect: 1.C'est un plat typiquement français. On les prépare avec du beurre et de l'ail. Ce sont un escargot (...

**calculus**

1.) Find the derivative of ((x + 3)/e^x) ^ (Log e X) 2.) T/F (log e X)' = (log e |x|)' 3.) T/F (Log e 7x)' = (log e x)' 4.) Find the derivative of e^(log e 7x)

**algebra**

What is a quadratic function?