Friday
April 18, 2014

Posts by sophie


Total # Posts: 366

Maths
write a directed number to show the size and direction of the number. Question john walked 10km east

Physics GR12
A bungee jumper of mass 75kg is stadnding on a platform 53m above a river. The length of the unstretched bungee cord is 11m. The spring costant is 65.6N/m. Calculate the jumper's speed at 19m below the platform on his first fall. [Also, please state which height you usd an...

Please any math helper!!
How do you do these questions, I have all my steps done until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2: -(9x^2)? 5. 5x(2x^2)^2 ...

Math Ms Sue check
Do you know anyone else who can help?

Math Ms Sue check
Oh no, this is due tomorrow and I have a huge test on this concept tomorrow... But it's ok...

Math Ms Sue check
How do you do these questions, I have all my steps done until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2: -(9x^2)? 5. 5x(2x^2)^2 ...

Math
How do you do these questions, I have all my steps done until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2: -(9x^2)? 5. 5x(2x^2)^2 ...

Math help
How do you do these questions, I have all my steps done until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2: -(9x^2)? 5. 5x(2x^2)^2 ...

To: bobpursley or any math helper
please help me on my questions, I have a big test tomorrow and I don't understand how to do some questions, please help me

Math
How do you do these questions, I have all my steps until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2: -(9x^2)? 5. 5x(2x^2)^2 6. -3...

Physics II
Two charges attract each other with a force of 3.0 N. What will be the force if the distance between them is reduced to one-ninth of its original value?

to: bobpursley
wait...so you were talking about this question: (c^2/3d^-1)^-2 I thought you were talking about this question: (2m^4n/3m^-1n^3)^-2 so is my answer to this question (2m^4n/3m^-1n^3)^-2 correct?

to bobpursley
is this the correct answer: 2m^-8n^-2/9m^2n^-6??

to: bobpursley
please help me with the last question, are the others all correct?

To Ms.Sue or any Math helpers
Can you please help me with my math law of exponent quesions, please check my answers, please its due very soon.

Math: law of exponents check answers
how would you turn this question:(2m^4n/3m^-1n^3)^-2 into a positive?

Math: law of exponents check answers
wait...so you were talking about this question: (c^2/3d^-1)^-2 I thought you were talking about this question: (2m^4n/3m^-1n^3)^-2 so is my answer to this question (2m^4n/3m^-1n^3)^-2 correct?

Math: law of exponents check answers
so the correct answer would be : 2m^-8n^-2/9m^2n^-6??

Math: law of exponents check answers
is the last one the only one that is wrong, please show me how to do the last one

Math: law of exponents check answers
how do you sqaure the last one?? please show me how

Math: law of exponents check answers
I know that anything to the power of 0 is 1 but I need help with these 2 questions and check my answers: (xy)^0 / (z^2a^1)= (-2mn^2)^1 / (pqm)^0= (xy^2z)^0= 1? Negative Exponents: it says to leave answers with positive exponents only, I did all these questions so please check ...

algebra
a store buys jeans for $24 each and marks them up 30%. what is the selling price of a pair of jeans?

math please hurry
A secret code must consist of three capital letters followed by a digit. Letters cannot be repeated. How many secret codes are possible? A. 140,400 B. 156,000 C. 175,760 D. 358,800

ap calculus
Solve the integral ∫csc(z+π/6)cot(z+π/6)dz

Chemistry PLEASE HELP!
Check all of the following statements which are TRUE for a titration. Select one or more: a. A suitable primary standard must be available. b. The concentration of the solution in the buret (the titrant) must be known before the titration is begun. c. Titrations can only be pe...

Chemistry 104 PLEASE HELP ME!!
Determine the weight of Na2C2O4 which is required to react completely with 20.0ml of 0.02M KMnO4.

Chemistry PLEASE HELP!
For MnO2 it says the product is Mn2+ (manganese ions), so write For the second half-cell reaction, I got Br- + 3H2O ---> BrO3- + 6H+ 6e-. Now I believe that I have to multiply the manganese half-cell reaction by three to cancel out the number of electrons. Then, my answer w...

Chemistry PLEASE HELP!
Manganese dioxide reacts with bromide ions to form manganese ions and bromate ions in an acidic aqueous solution. Write the balanced equation for this reaction. Select one: a. Br- + MnO2 + 3H2O Mn2+ + BrO3- + 2H3O+ b. Br- + 3MnO2 + 6H3O+ 3Mn2+ + 9H2O + BrO3- c. 6Br- + MnO2 + 4...

Chemistry 104 PLEASE HELP ME!!
Calculate Eo (reduction potential) for the following balanced reaction. NiO2 + 2H2O + 2Fe(OH)2 Ni(OH)2 + 2Fe(OH)3

Chemistry 104
Calculate Eo (reduction potential) for the following balanced reaction. NiO2 + 2H2O + 2Fe(OH)2 Ni(OH)2 + 2Fe(OH)3

Chemistry 104
Thank you for replying. Why do we add water to it?

Chemistry 104
The reaction of hydrogen peroxide, sulfuric acid and lead results in the production of lead sulfate in an acidic aqueous solution. Write the balanced equation for this reaction.

math
What is a unit price?

Chemistry
How many grams of magnesium nitride are formed from 45.1 moles of magnesium?

heat energy
help me convert 0.093cal/g¤c to j/kg/k

Math
18 play baseball, 17 play basketball, 30 play neither or both. I'm trying to make a Venn diagram but don't understand how. Please help!

physics
differences btw a window unit air-conditioner and split-unit air conditioner.(2)explain d working principle of a freeze dryer using a diagram

physics
what factors can affect a bodies temperature rise?

Science
how would tides be different if the moon revolves as fast as the earth rotate

Chemistry
The density of carbon in the form of diamonds is 3.51 g/cm^3. If you have a 40- carat spherical diamond, what is the diameter of the diamond in millimeters? (1 carat=0.200 g)

chemistry
which alkali metal form superoxidess?(2)explain why rubidium has a short life?

chemistry
explain why iron is paramagnetic?

Chemistry
Mercury dissolves in concentrated nitric acid, with the evolution of a reddish-brown gas, just as in the reaction shown in figure 5.4 on page 188 for copper. The oxidation state of the mercury after reaction is +2. Write a balanced net ionic equation for the reaction?

Chemistry
Mercury dissolves in concentrated nitric acid, with the evolution of a reddish-brown gas, just as in the reaction shown in figure 5.4 on page 188 for copper. The oxidation state of the mercury after reaction is +2. Write a balanced net ionic equation for the reaction?

math
y^2+4y-32=0 what is the greatest factor

Social Studies
"How was the free-trade trial of 1849 a victory for the Metis?" Was it because the 4 Metis offenders were given mercy and it also ended the HBC monopoly?

algebra
What is the solution of the system of equations? y = 3x + 7 y = x – 9

algebra
At the Wild Thing Zoo, you can rent a motorized cart to tour the grounds for a $4 initial charge and $4 per hour. An equation that represents the total cost y for x hours is y = 4 + 4x. At Safari Zoo, you can rent the same cart for a $3 initial charge and $5 per hour. An equat...

algebra
In a basketball game, a regular basket was worth 2 points and a long-distance basket was worth 3 points. If there were 45 baskets in a game and 96 points total, how many regular baskets r and long-distance baskets l were made? Show the correct system of equations.

algebra
You decide to market your own custom computer software. You must invest $3,255 for computer hardware, and spend $2.90 to buy and package each disk. If each program sells for $13.75, how many copies must you sell to break even?

geometery
1.given the function y=x^2-4x+5,find the following: a.vertex b.maximum or minimum c.axis of symmetry d.y-intercept e.x-intercept(zeros) f.graph

perimeter and area
what is 800cm times 15cm help me find the area cm2

Physics
A bullet is fired straight up from a gun with a muzzle velocity of 148 m/s. Neglecting air resistance, what will be its displacement after 6.3 s? The acceleration of gravity is 9.8 m/s2 .

Mathematics
A jar has eight red, nine blue, and ten green marbles. What is the least number of marbles that you can remove from the jar and be certain that you have three of the same color?

chem
How much heat is necessary to change 5 grams of water at 10 degrees celcius to water at 70 degrees celcius?

physics
A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force F then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle (theta)=(theta)0 and the mass has been raised by a vertical distan...

physics
small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance . Assume the force...

physics
A large 63.0kg board is propped at a 44 degree angle against the edge of a barn door that is 2.5 m wide. How great a horizontal force must a person behind the door exert (at the edge) in order to open it? Assume that the coefficient of friction between the board and the door i...

R.H dana
i forgot my spelling words how do i prent my homework out miss.pitkin

Spanish-I'm sorry SraJMcGin
Hi SraJMcGin, I'm realy sorry I asked this question again-I never saw your post from a few days ago-I only saw what was posted by a Lore-that's why I asked what I did because the post by Lore changed some things around that I didn't understand-I never saw your post...

Spanish-Thank you Ms. Sue
Thank you. I appreciate it

Spanish-Please check SraJMcGin
Hi, I redid some of the answers as suggested yesterday from someone who responded to my post. Could you please see if I did them correctly-Thank you- I made the corrections-someone yesterday redid a question but the questions shouldn't be redone-that's my homework-the ...

Spanish-8th grade-Please check
I apologize. I posted once early yesterday and then late. The person who answered caught a few mistakes which I now corrected.However, the person who responded changed the questions which I had to answer.The questions can't be changed-all I had to do was answer them. All I...

Spanish-8th grade
I made the corrections-someone yesterday redid a question but the questions shouldn't be redone-that's my homeowrk-the answers isare mine and I'm not sure if they're correct. 1. ¿Dónde estuvo tu mama ayer? Mi mamá estuvo en la tienda. 2. &i...

Spanish-8th grade
Thank you for helping- I see what is wrong in mamá-except number 3 was asking "adonde" not Dónde-would it still be same answer? Also, number 5, I'm not sure I understand-shouldn't la escuela be separate from "yo empecé" ??

Spanish-8th grade
Please check 1. ¿Dónde estuvo tu mama ayer? Mi Mama estuvo en la tienda. 2. ¿Tocaste un instrumento la semana pasada? Sí, yo toqué un instrumento la semana pasada. 3. ¿Adonde fuiste el lunes pasado? Yo fui a la escuela el lunes pasado?...

Spanish 8th grade
I had to answer the above questions-I'm not sure if I answered them correctly-expecially number 3 Thank you for helping

Spanish 8th grade
1. ¿Dónde estuvo tu mama ayer? Mi Mama estuvo en la tienda. 2. ¿Tocaste un instrumento la semana pasada? Sí, yo toqué un instrumento la semana pasada. 3. ¿Adonde fuiste el lunes pasado? Yo fui a la escuela el lunes pasado? 4. ¿C...

Spanish-Please check also
Thank you for checking these-it was a typo in son conjugated as fueron Thank you again Happy New Year!!

Spanish-Please check also
I couldn't number these because it kept saying I wanted to post a website URL I had to conjugate each vwerb in the past tense for above assignment-thank you

Spanish-Please check also
hago-hice tiene-tuvo corremos-corrimos juego-jugué son-fueron juegan-jugaron piensa-pensó pienso-pensé entienden-entendieron tienen-tuvieron andan-anduvieron patinan-patinaron corren-corrieron pescan-pescaron hacen-hicieron pregunta-preguntó doy-di ...

Spanish
Thank you for answering and catching that one

Spanish-Please another to check
Please also check these-I had to post twice to get them listed-had a problem numbering the answers

Spanish
Did I conjugate these correctly? 1.tomo-tome 2.tengo-tuve 3.es-fue 4.quiero-quise 5.deseo-deseé 6.dicen-dijeron

Spanish-8th grade
I was told to conjugate poder in the past tense for 1-4-so I knew what I wa suppose to conjugate Thanks for helping me-I really appreciate it

Spanish-8th grade-Please recheck
Please recheck number eight

Spanish-8th grade
Number eight got cut off-it should read supieron I think??? I have Windows XP

Spanish-8th gradePlease check
After someone please checks this, could you also explain how to do accents on the keyboard-I always use Spanishtypeit which is a pain at times to go back and forth with- I have Windows PC

Math
An engineer is desingning a parabloic arch, the arch must be 15 m high , and 6 m wide, at a height of 8 m a) determine a quadratic fundtion that satisfies these conditions b) what is the width of the arch at its base

Math
The height , in metres, of the trajectory of a football is given by h(t)=2=28t-4.9t^2, where t is the time in height of the football and the time when the height is reached

writing
can someone proofread?

writing
Freedom Doesn’t Come Free What is something you can never show much gratitude for? Well, veterans have done many wonderful things for our country, especially freedom. Freedom is a debt that can we can never repay veterans for. One reason I said they fought for freedom was...

Chemistry
exothermic

writing
I have two coins. Their sum is $0.55. One of them is not a nickel. What coins do i have?

Chemistry
A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?

Chemistry
A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?

health
who are resonsible if the doctors office suffers a power outage. the doctor, or the agency managing the computerized data for the doctor????

math
3.6

math
Find a parametric description for the ellipse having the focus F=(0,-4), corresponding directrix y=3, and eccentricity e=3/4.

math
What is the distance between the parallel planes: ax+by+cz=d1 and ax+by+cz=d2?

math
Is it possible for the lengths of a right triangle to form a geometric sequence? If yes, determine the lengths and the measures of the acute angles. if it's not possible, explain why not.

math
illuminated by the rays of the setting Sun, Kelly rides along on a merry-go-round casting a shadow on a wall. The merry-go-round is turning 36 deg per sec. Kelly is 25 ft from its center, and the Sun's rays are perpendicular to the wall. At what rate is the shadow moving w...

Math
What is the distance between the parallel planes 2x+y-3z=13 and 2x+y-3z=35?

math
why do you have = signs in part a?

math
Given the plane 2x-3y+7z=4, a) Find the equation for the line perpendicular to the plane that intersects the plane at the point P=(6,5,1). b) How far is it from the point (4,-2,3) to the plane?

math
Apply logarithms to create a linear relationship: ((x^3)(y^1.5))/(z^.5)=k

english homework
Are there language errors? please

english homework
nobody?! please help me

english homework
Hello, sorry I just saw the last message then I would like help in order to correct the dialogue: spelling, vocabulary, grammar... Be intransigent even if it's my second language tell me if something can seem illogical Look at the dialogue: D: doctor M: patient's mothe...

english homework
thanks

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