Sunday

March 1, 2015

March 1, 2015

Total # Posts: 518

**chemistry**

not really I am just trying to understand what the chemical equation looks like
*November 21, 2013*

**chemistry**

Write the equation for the dissociation of carbonic acid.
*November 21, 2013*

**Math**

it is t over the letter c t and c can be any number just look on your graph and look at the number to copies to the number of secconds thank you,molly
*November 18, 2013*

**Science**

yes that's right
*November 6, 2013*

**Homework Help Calculus**

I tried that answer and it still was incorrect
*October 15, 2013*

**Homework Help Calculus**

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 1/100cm thick to a hemispherical dome with a radius of 18 meters. I tried it but I keep getting the wrong answer.Here's what I did below: sphere: V = ⁴/&#...
*October 15, 2013*

**Practice Exam Calculus **

The radius of a sphere was measured to be 20cm with a a possible error of 1/5cm 1).Use linear approximation to estimate the maximum error in the calculated surface area. Leave your answer in terms of pi. 2).Use linear approximation to estimate the maximum error in the ...
*October 15, 2013*

**math**

using d2h/dt2=−g+k(dh/dt)^2, find an expression for the terminal velocity in terms of k and g?
*October 7, 2013*

**Math**

A man on the 8th floor of a building sees a bucket (dropped by a window washer) pass his window and notes that it hits the ground 1.5s later. Assuming a floor is 12ft high (and neglecting air friction), from which floor was the bucket dropped?
*October 7, 2013*

**Math**

Draw all the possible rectangles with a perimeter of 26 cm and whole number lengths of sides. For each rectangle, label the lengths of two adjacent sides
*September 29, 2013*

**Math**

Mike drove to a friends house at a rate of 40 mph he returned by the same route at 45 mph The driving time round trip was 4 hours. write and solve an equation to find the distance Mike traveled
*August 13, 2013*

**Math**

Let V be the volume of a pyramid of height 15 whose base is a square of side 5. Part a). Use similar triangles to find the area of the horizontal cross section at a height y. Part b). Calculate V by integrating the crosss-sectional area.
*July 9, 2013*

**Chemistry**

If you could me solve ths is anyway, it would be much appreciated. A solution containing 3.50g of sodium carbonate is mixed with one that contains 5.00g of silver nitrate. a. Write the complete chemical equation and the net ionic equation for the reaction that occurs. b. What ...
*June 29, 2013*

**Chemistry**

If you could me solve ths is anyway, it would be much appreciated. A solution containing 3.50g of sodium carbonate is mixed with one that contains 5.00g of silver nitrate. a. Write the complete chemical equation and the net ionic equation for the reaction that occurs. b. What ...
*June 29, 2013*

**science**

how can you define the problem how far can you make a rubber stopper fly through the air if the only force applied comes from a gas forming chemical reaction
*May 15, 2013*

**chemistry**

Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.528g/L at 25 degree celsius and 721 mmHg ?
*May 4, 2013*

**chemistry**

To identify a diatomic gas (), a researcher carried out the following experiment: She weighed an empty 2.4- bulb, then filled it with the gas at 1.70 and 28.0 and weighed it again. The difference in mass was 4.7 . Identify the gas.
*May 4, 2013*

**Math**

How to figure out 4x+9=1234
*April 28, 2013*

**math**

triangle ABC is an isoscles triangle and semicircle, have same base AB and same area. Find the base angles of the triangle.
*April 23, 2013*

**Biology**

Dephosphorylation in the transuction process needs: A) protein kinases B) protein phosphatases C) single sugar like glucose D)cabohydrate
*April 14, 2013*

**Parametric Equations**

Convert to a rectangular equation by eliminating the parameter: x=(1/t) y=2t+3
*April 13, 2013*

**Biology**

Programmed cell suicide occurs when internal or external signals go through _____ processes. Answer a)reception b)transduction c)response d)all of the above
*April 13, 2013*

**Calculus**

Use 5 right rectangles to estimate the area of the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?
*April 12, 2013*

**Calculus**

Estimate the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?
*April 12, 2013*

**Calculus**

what is the second derivative of (x^3-6x)^11 that is fully simplex
*April 8, 2013*

**Calculus**

does the series 1/(n^2+n) converge or diverge? n=2 to n=infinity
*March 31, 2013*

**Calculus **

does the sum e^n / n! converge or diverge? n=1 --> infinity
*March 31, 2013*

**Calculus**

find the 6th degree Taylor polynomial for f(x)=cosx centered at pi/2
*March 31, 2013*

**History**

Was Wilson correct in trying to get American into the League of Nations? Was it correct to try to get the tenth article modified?
*March 2, 2013*

**History**

Why did many progressives on either side of WW1 see America's entry into the war as an opportunity? What did the progressives accomplish during the war that they felt was positive?
*March 2, 2013*

**calculus**

Find dy/dx by implicit differentiation. x cos y + y cos x = 1
*February 28, 2013*

**calculus**

y= e^-7x cos 5x y'=
*February 28, 2013*

**calculus**

Sorry y'=
*February 22, 2013*

**calculus**

y = (sin x) / (1 + tan x)
*February 22, 2013*

**Algebra**

I'm not entirely sure how to set up this problem.
*February 21, 2013*

**Algebra**

How many ounces of other metal must be added to 56 ounces of pure silver to make a composition that is 70% silver?
*February 21, 2013*

**Math **

A house is being renovated for $50,000. Right now the HST is 12% and is charged on all renovations. After April the HST will be gone and be replaced with PST of 7% and the GST of 6%. Renovations will only have to charge GST. How much money will the homeowner save if they wait ...
*February 20, 2013*

**Math 9**

omg thank you so much, you saved my life! so the answer is $3000 right?, thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*February 20, 2013*

**Math 9**

my teacher has given us no notes or examples, thats why im asking for help
*February 20, 2013*

**Math 9 **

A house is being renovated for $50,000. Right now the HST is 12% and is charged on all renovations. After April the HST will be gone and be replaced with PST of 7% and the GST of 6%. Renovations will only have to charge GST. How much money will the homeowner save if they wait...
*February 20, 2013*

**math 9 help**

A house is being renovated for $50,000. Right now the HST is 12% and is charged on all renovations. After April the HST will be gone and be replaced with PST of 7% and the GST of 6%. Renovations will only have to charge GST. How much money will the homeowner save if they wait ...
*February 19, 2013*

**Math 9**

A house is being renovated for $50,000. Right now the HST is 12% and is charged on all renovations. After April the HST will be gone and be replaced with PST of 7% and the GST of 6%. Renovations will only have to charge GST. How much money will the homeowner save if they wait ...
*February 19, 2013*

**Math 9**

Thanks for #1 but i still dont get #2 can u help again
*February 19, 2013*

**Math 9**

1. A premium box ticket at the Canucks game is $60 more than the low section next to the glass. The middle section is $90 less than the box section. The total for these three seats is $360. How much does each seat cost? Use algebra. 2. A house is being renovated for $50,000. ...
*February 19, 2013*

**Science 9**

never mind i have figured out the answers
*February 15, 2013*

**Science 9**

write formulas for each of these compounds: potassium phosphate ammonium sulfate sodium oxide For sodium oxide i got: Na 2 O
*February 15, 2013*

**To :: Ms.Sue**

ok thanks, and its totally my fault cause i miss typed the question. thank you for understanding and helping me :)
*February 7, 2013*

**To :: Ms.Sue**

i miss typed its actuallt 2.10 not 2.20 im still stuck
*February 7, 2013*

**To :: Ms.Sue**

no it wasnt 2.20 it was 2.10
*February 7, 2013*

**To :: Ms.Sue**

Ms.Sue when you answered my question you said x= 3.87 but then the daughters drink would be $2.97 and the sons drink would be $5.97 not 6.07 and the total wouldnt add up to $12.90, it would add up to 12.81.... i dont get this
*February 7, 2013*

**Math 9**

omg thank you, i was trying this too thanx:)
*February 7, 2013*

**Math 9**

My family went to starbucks. We ordered 3 drinks. My daughter's drink was .90 cents less than my drink and my sons drink was $2.20 more than my drink. The total bill was $12.90. How much was each drink? Use algebra. k so i did this: x+ (x-.90) + (x+2.20) = 12.90 how do you...
*February 7, 2013*

**math**

Sorry, I misunderstood the question. it's $34.
*February 7, 2013*

**math**

100%-85%=15% $40 x 0.15 = $6
*February 7, 2013*

**vectors**

The position vectors, r km, and the velocity vectors, v km/h, of two boats at a certain time are given by ... Boat A:at 10:00 am rA=6i+10j vA=8i–2j Boat B:at 10:30 am rB=8i+5j vB=4i+j ... determine the time at which boat B should head out so that the two boats do collide.
*February 7, 2013*

**Math 9**

My family went to starbucks. We ordered 3 drinks. My daughter's drink was .90 cents less than my drink and my sons drink was $2.20 more than my drink. The total bill was $12.90. How much was each drink? Use algebra. Please help me, thanx sorry I had to repost this question...
*February 6, 2013*

**Math 9 **

My family went to starbucks. We ordered 3 drinks. My daughter's drink was .90 cents less than my drink and my sons drink was $2.20 more than my drink. The total bill was $12.90. How much was each drink? Use algebra. Please help me, thanx
*February 6, 2013*

**math**

You guys do an excellent job helping kids.Thank you :)
*February 2, 2013*

**math **

I have a question is this cheating when we ask questions from our school work ? Wouldn't our on line school know we are kids are doing this ? What is an ethical homework question ? Curious..
*February 2, 2013*

**Math 9 algebra**

Thank you
*January 26, 2013*

**Math 9 algebra**

A mechanic charges $70 an hour plus the cost of parts to repair a vehicle. The parts cost $215 for the repair on Tamara's car. A) write an expression for the total cost, C, of repairing Tamara's car for any numbers of hours, n. B) use the expression you created in part...
*January 26, 2013*

**Calculus 1**

(a) What is the continuous percent growth rate for P=130e^0.07t , with time, t , in years? (b) Write this function in the form P=P0a^t. What is the annual percent growth rate? Round your answer to two decimal places. I tried it but now I'm just more confused. How do I do ...
*January 24, 2013*

**math**

Find a fraction that reduces to 3/4 when both the numerator and denominator are decreased by i, and reduces to 4/5 when both the numerator and denominator are each increased by 1. I know the answer is 7/9, but i dont know how to solve (i must use a system of equations).
*January 23, 2013*

**Chemistry**

6.326
*January 18, 2013*

**4th grade math**

oh i know now xD
*January 14, 2013*

**4th grade math**

I don't know what the rule is
*January 14, 2013*

**4th grade math**

i don't get what u Kineda is saying idk what kaitlyn is saying idk what psydag is saying either
*January 14, 2013*

**Math 9**

Thanks :)
*January 13, 2013*

**Math 9 **

use exponent rules to simplify. Write as a single power, dont need to find the value. [ (11/20)^4 x (11/20)^-8]^5 and (11/20)^-6 you cant leave an number to the power of a negative exponent. You have to change it like this ex : 2^-3 = 1/2^3 = 1/8
*January 13, 2013*

**algebra**

-A store sells 28 ounces of peanut butter for $2.24. The store also sells 32 ounces of teh same peanut butter for $2.40. Which is a better buy?
*January 10, 2013*

**World history**

12. The Delhi Sultanate ruler Radiyya first took power chiefly because A. she proved herself in battle. B. she wore men's clothes. C. she killed her brother. D. her father chose her as his successor. I chose c
*December 19, 2012*

**Spanish**

Ok can u Atleast check if it makes sense? I wanna pass
*December 7, 2012*

**Spanish**

I found it can i send a recording??
*December 7, 2012*

**Spanish**

R these correct??plz help En la 11. ___________ te llamé. De la oscuridad me llamaste. Reconocí tu 12. ___________. Reconociste la mia. “Vente para acá,” 13. ___________. Respondiste: “¿Dónde estás, papá? No te 14...
*December 7, 2012*

**Spanish**

😭 Thanks anyway:(
*December 7, 2012*

**Spanish**

No I listen to the cd and fill in the blanks
*December 7, 2012*

**Spanish**

Ok if I try fillin in the blancks then can u help
*December 7, 2012*

**Spanish **

Can someone plz fill in the blanks for me i can't find the cd and its due tomorrow??!!!!!!PLZZZZ En la 11.________ te llamé. De la oscuridad me llamaste. Reconocí tu 12.______. Reconociste la mia. "Vente para acá,"13.______. Respondiste: &...
*December 7, 2012*

**Spanish**

Thanks:)!!!!
*December 7, 2012*

**Spanish**

What's the correct way to say Then I was mistaken In Spanish?
*December 7, 2012*

**Spanish**

I meant :)
*December 7, 2012*

**Spanish**

It's alright:(
*December 7, 2012*

**Spanish**

Partido means party it was juego but thanks
*December 7, 2012*

**Spanish**

Nvr mind
*December 7, 2012*

**Spanish**

Which is he correct way to rite this sentence in Spanish We lost the game Perdimos el juego OR Perdimos el partido
*December 7, 2012*

**Spanish**

Bunch^^^
*December 6, 2012*

**Spanish**

Thanxz a buch:)!!!!
*December 6, 2012*

**Spanish**

And does la frente mean forehead?
*December 6, 2012*

**Spanish**

Ok:) thanks I Appreciate it!!!!!
*December 6, 2012*

**Spanish**

Can u correctly write these sentences in Spanish,plz? 1. I'm very proud of my son. 2. He can spell his name backward and forward. 3. What's his name? 4. How much does a new car cost in America? 5. You must be very rich. If tried already this is wat I got, plz double ...
*December 6, 2012*

**Spanish**

Thanks☺🙏
*December 6, 2012*

**Spanish**

Ok thanks r they gonna post it here?
*December 6, 2012*

**Spanish**

Are they correct
*December 6, 2012*

**Spanish**

6.tengo 7.tenemos 8.sra 9.venimos 10.sale 11.vuelven
*December 6, 2012*

**Spanish**

Conjugate the following irregular verbs in the simple present tense (indicative) 6. Tener(to have) Yo __________ 7. Tener(to have) Nosotros ________ 8. Venir(to come) Tú _________ 9. Venir( to come) nosotros________ 10. Salir( to leave). él/ella_________ 11. ...
*December 6, 2012*

**Math**

y/9 = 4 2/3 . Solve for Y . PLEASE HELP!
*December 6, 2012*

**Math**

One foot is 12 inches so how many times does 12 go into 60 ? When you are done dividing times your sum . 12x the answer.
*December 6, 2012*

**math**

LW=9 2L+2W=30 that is for a rectangle. 2*L/9+2L=30 20L=270 L=13.5, W=13.5/9=you do it.
*December 6, 2012*

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