# Posts by Rachel

Total # Posts: 1,542

**6th grade**

Do you have online readings and questions for my son, who is in 6th grade? I see lesson plans, but I don't see the information to give out. Please let me know about this, thank you.

**statistics**

a survey is to be conducted to determine the proportion of U.S. voters who support additional aid to African nations to fight poverty and HIV/AIDS. Of the proposed sammple sizes which is the smallest that will guarantee a margin of error of no more than 4% for a 90% confidence...

**trig**

how?

**trig**

sin^4 x = (3-4cos 2x + cos4x)/8 prove on one side please!

**Biology**

Where and how are tree seedlings raised?

**Science**

If a block could be molded into a flatter and longer shape, then which one would happen and can you explain? a. mass, volume, and density all would change. b. volume would change, but the mass and density would remaine the same. c. mass and volume would change, but the density...

**math**

if the answer is "start at (0,0) and move 3 units to the right, " what is the question?

**10th grade English**

The diffrence in your audiences religion is based on thier beliefs and how your explaining to them that you in a way are against them.The Jewish faith is one that is very strict and is not a strong supporter in women choosing their own destiny.Any other audience would proubly ...

**8th grade**

Go with number 3

**chemistry**

I got 51.5?

**Point Slope Form Algebra**

What is the difference between Y1=MX1+B and Y=MX+B

**Calculating Charge on a Polpetide**

10) What is the charge on the peptide CHEMISTRY at pH 8.3?? How would you go about this?Look at the ionizable groups? Thanks, Rachel

**science**

What are the two major functions of the appendicular skeleton?

**science**

How has a fly adapted to live in the desert?

**Algebra help 2**

name the property shown by the statement below 8+4*3-8+3*4

**Algebra**

On its first three plays in a football game, the offense gains 6 yards,loses 5 yards, and then gains 7 yards. Write an equation that could be used to find y, the number of yards needed on the fourth play for the overall 10-yard gain required for the first down. Could you ...

**Chemistry**

what is the name for the following coordination compounds or ions? 1. [Al(H2O)6] Br3 2. [Cr(NH3)6] Cl3 3. K3[FeF6] 4. [Zn(OH)4]-2

**Anatomy and Physiology**

Which of these two options demonstrate irritability and conductivity and thus transmit electrical messages from one area of the body to another area? 1. neurons 2. neuroglia

**earth comm fluid and spheres science**

can someone explain the relationship between ocean circulation patterns during an el nino event and atmospheric circulation?

**Science**

Ferns produce male gametes in what?

**History**

Thank you!

**History**

Who were the midnight judges in America during the 1800s? Also, can someone please explain the cause of Marbury vs. Madison and what the effect of Marbury vs. Madison was? Thank you.

**physics conservation of momentum**

yeah i kno how to calculate those 2. i got 5 and -5... so is momentum conserved? because change in momentum would be 5 - (-5) = 10 but some ppl are telling me momentum is conserved because they are the same values.

**physics conservation of momentum**

A 0.5 kg ball is thrown horizontally towards a wall with a speed of 10 m/s. The initial velocity is chosen to be the positive x-direction for this question. The ball horizontally rebounds back from the wall with a speed of 10 m/s in the negative x-direction. What is momentum ...

**Physics**

how come for part a. when i solve for Vf (which becomes V0 of the projectile motion), i get a negative value.. since i got this equation... 1/2ks^2+mgh+1/2mv^2 = 0 solving for v.. i get v = sqrt(-(2gh-ks^2/m) thats what is confusing me. so im not shure if i did it correctly.

**Physics**

A child's game consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. By compressing the spring, the child can launch the ball up the ramp. The spring has a spring constant k, the ball has a mass m, ...

**physics**

a spring with spring constant k= 100N/m is at its equilibrium length a) how much elastic potential energy is stored in the spring? b) the same spring is stretched so that it is 6cm longer than it was. How much elastic potential energy is stored in the spring now? c) a ...

**French**

I have to write a short paragraph about where I have already traveled. Can someone check this for me? J’ai déjà allé à d’autres états des Etats-Unis et le Mexique. J’ai allé au Californie, l’Utah, Le Colorado, L&#...

**Science**

Explain what happens in the eye of the storm. Why can you survive the eye of the storm if you are inside and have shelter but instantaneously freeze if you are outside?

**Chemistry!!!**

Why does the ionization energy of Ca+ greataer than K even tho they have the same amount of e- why does Na have a relatively simple atomic spectrum while Cr has a very complex one?

**Chemistry**

Why do bromine and iodide have similar chemical properties?

**english**

In the following passage, a linking device has been omitted. Choose the word that would make the passage coherent: __ this technique won’t work for everyone, it helps many people get a good cache of ideas to draw on. 1. However 2. Although Please help with the question I ...

**english**

Rewrite this sentence into the active voice by filling in the blank: ORIGINAL: The agency conducted an investigation into the matter. REVISED: The agency __________ the matter. ORIGINAL: Attempts by economists at defining full employment have met with failure. REVISED: ...

**english**

Rewrite this sentence into the active voice by filling in the blank: ORIGINAL: The agency conducted an investigation into the matter. REVISED: The agency __________ the matter. ORIGINAL: Attempts by economists at defining full employment have met with failure. REVISED: ...

**12th calculus**

find dy/dx by implicit differentation and evaluate the derivitave at the given point: (x+y)^3:x^3+y^3 point=(-1,1)

**ict**

which data type would you use for a telephone number

**Physics**

Suppose you press a book against the wall with your hand. The book is not moving and you are pushing horizontally. Now suppose you decrease your push, but not enough for the book to slip. What happens to each of the following forces? DO they increase in magnitude, decrease, or...

**math**

pls..help me about this common monomial factor. how to solve it,and how can i use the short method. thank you. :)

**9th grade**

how do i solve this equation with variables on both sides-the sequel 3(5y=2)-y=2(y-3)

**Social Studies**

I need help with my homework........... this is the question........... Are monsoons a blessing or a curse for the subcontinent?

**Chemistry/physics**

The question is calculate the average kinetic energy of CH4 molecules in a sample of CH4 gas at 263K. What formula should i use when you say "use temp"

**Chemistry/physics**

instead of what?

**Chemistry/physics**

Are there two ways of calculating the average kinetic energy of a molecule? Ik that 1/2mv^2 works but for this problem, i don't know the mass or the velocity....

**World History**

Thank You!

**World History**

haha, that's fine one more question.. the king didn't follow the magna carta but the people did right? and then that led to the creation of the Bill of right so who created the Bill of rights?

**World History**

Thank you so much that was exactly what I was looking for :]

**World History**

How did the Magna Carta and the Bill of rights lead to a change in goverment.

**Chem/Physics**

Are there two ways of calculating the average kinetic energy of a molecule? Ik that 1/2mv^2 works but for this problem, i don't know the mass or the velocity....

**Spelling**

k thnx guys! =)

**Spelling**

deck is to ornaments as a. equip is to pharaphernalia b. furnish is to references c. safeguard is to valuables d. salvage s to remains e. pack is to belongings

**Integrated Algebra**

How to solve common monomial factor? like this ex: 1.) x2y+x2y2=x2y 2.) 2a+2b 3.) 3b-9b2-12a

**Social Studies**

How does attending school benefit both the student and the government?

**social stuidies**

Maybe because they aren't patient enough to deal with children and the responsibility they have to take on .....or they wait till they become more matured an are then ready to take time to make their child or children.

**Basic Calculus**

How do you graph f(x)=sqrt(a^2-x^2)? how do you graph f(x)=0, if x is rational and f(x)=1, if x is irrational? I need to know how to graph them by hand, not on a calculator. Thanks in advance.

**MATH PLEASE HELP!**

Solve each system 3x+2y= -2 9x- y= -6 I know how to solve for x but i get really lost trying to figure out how to solve for the second variable

**Algebra 2**

Solve each system 3x+2y= -2 9x- y= -6 I know how to solve for x but i get really lost trying to figure out how to solve for the second variable

**english**

apples books

**home economics**

what foods have calcium in them ?

**honors geometry**

the locations of the participating towns on the map are Curtis(0,0), Clearfield(10,2,), Buster(5,7), Angel City(1,4) which of the following planned routes is nearest to the 26.3 mile requirement? a> curtis to clearfield to angel city to curtis b>curtis ti clearfield to ...

**math**

for function operations: If f(x) = x^2 -4 and g(x) = [square root of] (2x+4) g(f(a+2)) ---> then x^2 - 4 +2 x^2 - x [square root of] (2(x^2 - 2) +4) = x [square root of] 2 wher does 'a' come from?, but is that right?

**math**

i'm looking at another one, and i don't know where to start: x^3 - 2x^2 - 4x +8 hmm, cause u can't pull and x out, no quadratic . . .???

**math**

I'm not exactly sure how to factor cubed roots: 8x^3 - 1 = (2x)^3 - 1 that's what i get; can it be simplified anymore?

**math**

I need help what units are used when talking about area?

**Mat 116**

In 1990, the life expectancy of males in a certain country was 64.7 years. In 1994, it was 68.4 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990. The linear function E(t) that fits the data is E(t)= ___t + ____ (round to ...

**English**

I am doing well in my class but having trouble with a particular assignment. I don't really understand bias, fallicies and rhetoric. Here is my assignment, any help or enlightenment would be appreciated. I am not asking for my assignment to be done for me, I am just having...

**English**

I am doing well in my class but having trouble with a particular assignment. I don't really understand bias, fallicies and rhetoric. Here is my assignment, any help or enlightenment would be appreciated. I am not asking for my assignment to be done for me, I am just having...

**MATH HELP!**

Help with any of these would be greatly appreciated! THANK YOU! 2. How would i determine the values of 'k' if the graph y=2x^2-2x+3k intersects the x-axis at two distinct points? 3. The path of a basketball can be modeled by the equation h(d)=-0.13d^2+d+2. where h(d) ...

**Math help**

Help with any of these would be greatly appreciated! THANK YOU! 1. How would i solve 3x^2 - 4 = 0? And in simplest radical form? 2. How would i determine the values of 'k' if the graph y=2x^2-2x+3k intersects the x-axis at two distinct points? 3. The path of a ...

**Math help**

That dosen`t solve the whole question though =(.

**Math help**

How would i solve 3x^2 - 4 = 0? And in simplest radical form?

**Help with Math**

How would i determine the values of 'k' if the graph y=2x^2-2x+3k intersects the x-axis at two distinct points?

**Help with Math**

The path of a basketball can be modeled by the equation h(d)=-0.13d^2+d+2. where h(d) is the height in meters or the basketball and d is the horizontal distance in meters from the player. How far does the ball travel horizontally before hitting the floor?

**Function**

How would i solve x^3-3x^2+2=0? How would i show it in exact values?

**Functions / Calculus**

One of the zeros if P(x)=6^3-13^2+x+k is 2. What would be the value of k? And how would i write P(x) in factored form?

**calculus**

What would the remainder be if: P (x) = x^3 - 3x^2 + 3x + 2 is divided by x + 1? How would i get the answer?

**English**

Oh I am sorry the point of this letter is to show that you can write persuasive letter Mark Jones is the Head of Disablity benefits in your localDisablity office. You have a court hearring date in three months to determine if you are entilted to get any benefits however you ...

**English**

Please check this for me thanks so much for your time :) Write a letter To Mark Jones regardng your finanical hardships you are facing since you have been out of work due to a car accident. Make sure you give as many details as you can. June 17, 2008 Dear Mr. Jones I am ...

**calcius**

Determine whether the relation represents a function. If it is a function, state the domain and range. {(-2, 1), (-1, -2), (0, -3), (1, -2), (3, 6)} a. function domain: {-2, -1, 0, 1, 3} range: {1, -2, -3, 6} b. function domain: {1, -2, -3, 6} range: {-2, -1, 0, 1, 3} c. not a...

**calcius**

Determine whether the function is linear, constant, or neither y = x3 - x2 + 8 a. Linear b. Constant c. Neither I think it is neither

**english**

hi Im a senior and my last assignment in english is to write an essay ,If i don't get at least a B on this essay .I wont graduate.... The question : "why do writers often chose "betrayal" as a theme? to prove it chose 2 books ( kite runner and 1984) even if ...

**Corporate Tax**

Alan just immigrated to Canada and owns STARS ltd (US company). Alan owned 100% of shares to STARS ltd. STARS ltd. was incorporated in the US in 2004. Alan wanted to know if he should use STARS ltd or a new company to carry on his business in Canada? He's also not sure ...

**chemistry**

what is the balanced chemical equation for aqueous hydrgoen peroxide to produce solid lead (II) sulfate and liquid water?

**Physical Science**

Thank you Kristi, I really appreciate your response.

**Physical Science**

Why don't oil and water mix?

**Physical Science**

Many dry cereals are fortified with iron, how would you prove that?

**Physical Science**

An acid and a bas react to form a salt which consists of positive and negetive ions. Which forms the positive ions the acid or the bas?Which forms the negetive ions?

**Physical Science**

Pour vinegar onto beach sand in the Carribian and the results is a lot of froth and bubbles. Pour vinegar onto beach sand from California and nothing happens. Wht?

**Physical Science**

How do you know I have done no work? Maybe I am checking my results or maybe I just need to see how you get the results you get, I did not want to over write with everything I came up with so I just post the questions, sorry it will not happen again.

**Physical Science**

What happens to the pH of soda as it loses it's carbonation? Would it effect the taste? Why or why not?

**Physical Science**

How might warmer oceans accelerate global warming?

**Physical Science**

What determines whether a material is transparent or opaque?

**Physical Science**

What do radio wave and light have in commen? What is different about them?

**Physical Science**

What prevents rainbows from being seen as complete circles?

**Physical Science**

In which of these cases does a ripe banana apear black, red light/green light or blue light? Why?

**world history**

who sparked the 30 year's war?

**English (Frankenstein essay)**

i'm writing the same essay basically and this really helped cos i have no idea what frankenstein is on about tbh, thanks! :)

**Physical Science**

What kind of motion should you impact to the nozzle of a garden hose so that the resulting stream of water approximates a sine curve?

**Physical Science**

How does a Doppler effect aid police in detecting speeding motorist?

**Physical Science**

At the stand of a racetrack you notice smoke from the starters gun before you hear it fire Explain.

**Physical Science**

Why is an echo weaker than the original sound?