Saturday

April 30, 2016
Total # Posts: 398

**ALGEBRA**

Combine and Simplify 2 + t/t-3 - 18/t^2-9 - Please explain
*November 5, 2011*

**math146**

8-3 ... thank u ..
*November 3, 2011*

**math146**

equation for subtract the result in C form the result in A ... is it C - A
*November 3, 2011*

**chemistry ASAP**

okay , the website you put does not work. But one last question. for sodium hydrogen arsenate it says to give the correct formula. how do i go about doing that? how do i start? i know that sodium is Na and that arsenate is AsO4^3-
*November 2, 2011*

**chemistry ASAP**

i ran into a problem that is tin(IV)dichromate i thought the answer was SN2(Cr2O7)4 but the book says the answer is SN(Cr2O7)2 CAN YOU PLEASE EXPLAIN WHY??
*November 2, 2011*

**chemistry ASAP**

can anybody please explain nomenclature to me ? how to name? for example: Na3PO3 NH4CLO2 AuNO2
*November 2, 2011*

**chemistry**

can anybody please explain nomenclature to me ? how to name? for example: Na3PO3 NH4CLO2 AuNO2
*November 2, 2011*

**physics**

A project is fire at angale of 45 with x-axis with the K.E 100J what is its K.E energy at maximum height?
*September 25, 2011*

**Pre-Agbra**

never mind
*September 13, 2011*

**chemistry**

Write "oxidation" before the reaction below which is anoxidation reaction; write "reduction" before the reaction belowwhich is a reduction reaction. a.____________________ Na----> Na+ (small+) + e- b.____________________ Cl + e- ----> Cl- What does it...
*August 25, 2011*

**Physics _ Please help**

25 kg of ice at 0° C is combined with 4 kg of steam at 100° C. What is the final equilibrium temperature in ° C of the system? (Lf = 3.33 x 105 J/kg; Lv 2.26 x 106 J/kg, specific heat capacity of water =4186 J/(kg.K)) Question 2 options: A) 40 B) 20 C) 60 D) 100 E) 8
*August 12, 2011*

**Math**

A spherical balloon is being inflated so that its volume is increasing at the rate of 200 cm3/min. At what rate is the radius increasing when the radius is 15 cm.
*July 31, 2011*

**Chemistry**

:D thankyou very much for explaining it all, it seems i was treating the 0.2^1/2 as 0.2*0.5 (being half of one...so wrong!). To get 0.4472 though, 0.2 needs *2.236, it dawned to me as 2.24, bringing so3 to 62.4g after rounding. I promise to practice my algebra. I appreciate ...
*July 19, 2011*

**Chemistry**

I thought so2 would be 0.4, I didn't have so3 correct on my ice table. I get x as 0.485; 0.471(x-0.4)=(0.4)(0.2)^1/2 0.471x-0.1884=0.04 0.471x=0.2284 But x needs to be 1.18 for so3 to be 0.78M(1.18 - 0.4) to multiply with 80, am i missing something?
*July 19, 2011*

**Chemistry**

equilibrium constant for; so3 <----> so2 + 1/2o2 is found to be 0.471M^1/2 @ 600deg C after a quantity of sulfur trioxide is allowed to come to equilibrium in a 1L flask @ 600deg C, 0.2 mol oxygen was found to be present. What mass of sulfur trioxide was initially placed...
*July 19, 2011*

**Chemistry**

what is the proper name for (CH3)2CHCH(OH)CH3?
*June 27, 2011*

**Chemistry**

A certain headache relief tablet is composed of monoprotic acetylsalicylic acid(C9H8O4(s)) and an inert filler. A 4.00 g tablet was crushed and dissolved to make 40.0 mL of solution. The solution was then titrated with 0.900 mol/L NaOH(aq). The volume of NaOH(aq) needed to ...
*June 9, 2011*

**chemistry**

Help! The concentration of a solution of hydrochloric acid is 1•00 ± 0•05 mol dm−3 and the volume is 10•0 ± 0•1 cm3. Calculate the number of moles and state the absolute uncertainty.
*June 1, 2011*

**trig**

Ok, so im brand new at trigonometry. If i have a right triangle with an acute angle of 30° an opposite side of 4 and a hypotenuse of x how do ii find x
*May 30, 2011*

**calculus**

The tangent to y = (ax)+b/(sqrt x) at x =1 is 2x-y=1. Find a and b. help?
*May 27, 2011*

**advanced algebra**

That is supposed to be 1/x sorry!
*May 21, 2011*

**advanced algebra**

How would i go about solving this complex fraction? [(x/3)-4] / [5+(1x)]
*May 21, 2011*

**math**

the number blank thirds is between 3 and 4. what could the numerator of this number be? explain your answer.
*May 9, 2011*

**economic**

supposes that a borrower and a lender agree on the nominal interest rate to be paid on a loan. Then inflation turns out to be higher than they both expected. Using a method similar to the GDP deflator, compute the percentage change of the overall price level. Also use 2009 as ...
*April 25, 2011*

**economic**

supposes that a borrower and a lender agree on the nominal interest rate to be paid on a loan. Then inflation turns out to be higher than they both expectedInflation during the 1970s was much higher than most people had expected when the decade began.How did this affect ...
*April 25, 2011*

**economic**

supposes that a borrower and a lender agree on the nominal interest rate to be paid on a loan. Then inflation turns out to be higher than they both expected.
*April 25, 2011*

**Speechwriting**

Hiya! Okay how can I introduce a speech without saying Goodmorning ladies and gentlemen? But not seem rude?
*April 24, 2011*

**Social Studies**

My pleasure
*April 24, 2011*

**Algebra**

I should just stop using this site... No one ever wants to help me anyways...
*April 20, 2011*

**Algebra**

I dont even know where to start with this problem... i'm supposed to simplify it but i dont get how, please help! 12e^x / e^4x I would really appreciate the help, thank you!
*April 20, 2011*

**Algebra**

ok i need help simplifying this problem. please :) 5e^x/6e it looks similar to this 5e^x ____ 6e Thanks!
*April 20, 2011*

**statistics**

At a church bazzar they have a game of chance that consists of picking a two digit number(0-9).You can bet 1$ by picking a two digit number if you match two numbers you win 25$ if you match one the numbers in the same order you win 3$ if you bet 24 and 42 comes up you lose,but...
*April 19, 2011*

**Algebra**

OK THANKS!
*April 10, 2011*

**Algebra**

Thanks. What does that symbol mean? and how do i write it?
*April 10, 2011*

**Algebra**

Perform the indicated operation and state the domain. Let f(x)=x-1 and g(x)=x+1 f(x) - g(x) Heres my work (x-1) - (x+1) x-x=0 and -1-1=-2 Answer =-2 because the x's cancel each other out. How do i find the domain when there is no x in the answer?
*April 10, 2011*

**physics**

hkgfffc
*April 6, 2011*

**algebra**

use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y = 12 Why is the substitution method preferred in this case?
*April 5, 2011*

**chemistry**

0.03125M
*March 30, 2011*

**Physics**

100.32
*March 29, 2011*

**physics**

what is the prarticle diagram for the thermite reaction?
*March 27, 2011*

**math**

how do you solve: -3y=3x-9 and 2x-4y=12 and -3x=2y
*March 15, 2011*

**math**

wow thanks rieny :)
*March 7, 2011*

**math**

rieny that doesent make sense it cant be.
*March 7, 2011*

**math**

im in grade 4 i dont know what that is
*March 7, 2011*

**math**

the floor of a room is a rectangle. it has a perimeter of 22m and an area of 24 square meters. what are the length and width of the room?
*March 7, 2011*

**physics**

Speedometer readings are obtained and graphed below as a car comes to a stop along a straight-line path. How far does the car move between t = 0 and t = 14 s?
*February 22, 2011*

**AM I RIGHT?**

Ok i have done some more reading, and i get the feeling it was bad. Because it isolated the people from the rest of the Eastern EMpire? But i have to write an entire essay on this topic? what else can i say?
*February 13, 2011*

**World History**

There's too much information, my brain cant process it all. But i get the feeling it was good??
*February 13, 2011*

**World History**

What influence did the Mongol's Golden Horde have on the development of the Russian Empire? (Good or Bad?)
*February 13, 2011*

**World History**

Yes it does have to do with the Byzantine Empire because thats what we are studying right now...
*February 13, 2011*

**World History**

Well if you look at its geographical location does it seem like a lot of people would come there? (this is why i posted this Q, it doesnt make sense)
*February 13, 2011*

**World History**

Why is there such a wide diversity of people in Eastern Europe? What are some of the origins of these diverse groups?
*February 13, 2011*

**math**

slope = (y2-y1)/(x2-x1)=(8-0)/(-2+2) =8/0= infinity
*February 12, 2011*

**Calculus BC**

Find the volume if the region enclosing y=2x, y=0, x=3 is rotated a)about the y-axis b)about the line x=3 c)about the line x=4.
*February 12, 2011*

**geometry**

given: chord AB is parallel to chord CD prove if two chords of a circle are parallel, the two arcs between the chords are congruent. Prove: arc AC is congruent to arc BD
*February 7, 2011*

**banyan elementary**

Samantha has 7 tomato plants in 12 rows. How many tomato plants does she have? Solve using multiplication equations
*January 19, 2011*

**math**

i'm sorry i left out one part. "A rectangle is 4 times as long as it is wide. A 2nd rectangle is 5 centimeters longer and 2 centimeters wider than the first. The area of the second rectangle is 530 square centimeters greater than the first. What are the dimensions of ...
*January 13, 2011*

**math**

A rectangle is 4 times as long as it is wide. A 2nd rectangle is 5centimeters longer and 2 centimeters wider than the first. what are the dimensions of the original rectangle?
*January 13, 2011*

**math**

i have no idea how to do this...
*January 13, 2011*

**reading**

What is the Antonym for the word RECIPE?
*January 12, 2011*

**dressmaking**

there are mistakes in those answers, I just did this test. here the correct answers 1. B (reference for study book 042014 PAGES 34, 35) 5. C (reference for study book 042014 PAGES 25-27)
*January 12, 2011*

**math**

rectangle A has length 12 cm and width 6 cm and while rectangle B has llength 8 cm and width 5 cm .find the ratio of the size of and angle of A to the size of an angle of B
*January 7, 2011*

**Physics**

How much time is needed for 5.0 N force to increase the speed of a 0.248 kg object from 12 m/s to 56 m/s?
*January 6, 2011*

**Physics**

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?
*January 6, 2011*

**Physics**

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?
*January 6, 2011*

**Physics**

How much time is needed to completely stop a 1600 kg car moving at 35 m/s if an average force of 4200 n is applied?
*January 6, 2011*

**Calc**

1. For what value(s) of x is f(x) = (x-1) / (x^2 - 1) discontinuous? 2.) f(x) = (1)/(x^2) is continuous for all real numbers EXCEPT: a. x=0 b. x=1 only c. x=1 and x=-1 d. x=-1 only e. x=2
*December 19, 2010*

**English**

What are some main points of rising action in the Scarlet Ibis?
*December 15, 2010*

**Math**

Find the equation that represents all of the points that are three times as far from (6,6) as they are from (2,0)
*December 14, 2010*

**interesting log problem**

sounds quite right to me. thanks!
*December 12, 2010*

**interesting log problem**

log base 2n 1944 = log base n (486* (2)^1/2) find n^6
*December 12, 2010*

**Math hw**

A corporation has 24 shareholders holding 4140 shares. The founder of the company retains 50 % of the companies shares. The remaining shares are equally divided among his 23 grandchildren. By the company's articles of incorporation, the voting weight for each partner is ...
*December 9, 2010*

**Math help**

A corporation has 30 shareholders holding 2900 shares. The founder of the company retains 50 % of the companies shares. The remaining shares are equally divided among his 29 grandchildren. By the company's articles of incorporation, the voting weight for each partner is ...
*December 9, 2010*

**Calculus**

is the region bounded by x=0? if no, then it is in fact infinite... if yes, then: 1) find the points of intersection. they are x = 1/2 and x = 0. 2) take the integral of pi*(4x^2)^2 from 0 to 1/2.
*December 9, 2010*

**7th grade**

i need help with social stuides describe islam in the 600's
*December 8, 2010*

**Interger Science**

Calculate the free-fall acceleration of a 20 kg bag of salt.
*November 23, 2010*

**physics**

A 3.5 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 19 N at an angle θ = 45° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the right.)
*November 18, 2010*

**english**

we're the one and only primo exemplary, boisterous in a fun groove and rapturous in our own fascinating way. check parallelism???? tnx
*November 15, 2010*

**Math**

Thank you!!!
*November 9, 2010*

**Math**

Is it how?
*November 9, 2010*

**Math**

A tropical water lily doubles in size each week. If it takes 60 weeks for the plant to completely cover a pond, when will half the pond be covered?
*November 9, 2010*

**8th grade math**

the lesser of two consecutive even intergers is 10 more than one-half greater. Find the intergers
*October 4, 2010*

**math**

five 150ml cans of perfrct prt dog food $1.26. twelve 400ml cans of doggies love it for $7.38. ten 150ml cans of rover's chow for $2.60. six 400ml can of man's best forend for $3.94. Which pet food should ms.jones buy? explain in as many differnt ways as possible??
*September 9, 2010*

**language arts**

The rules require that each contestant make his or her own kite. What is the simple subject word?
*August 25, 2010*

**arithmetic**

i have difficulties understand what this means... numerals seventeen tens and twelve ones can u help
*August 20, 2010*

**art**

Give two reasons why jackson pollack's style of painting is considered important?
*April 25, 2010*

**ryme**

what rhyes with candy
*April 16, 2010*

**practice book**

ok thank youso much
*April 15, 2010*

**practice book**

grt rid of the double negatives you sure its too hard a life?
*April 15, 2010*

**chemistry**

energy level
*April 15, 2010*

**accounting**

create a balance sheet for this company from May 1 to August 31.Deposit$1000,$600 loan,August 31-balance of checkbook=$690,$400 supplies,Owe employees$1900.00+$200more,$600 for 6 month lease in advance,$300 repair bill,$300 trailor for equipment,$460 withdraw for owner. Need ...
*April 10, 2010*

**chemistry AP**

You have to design a buffer based on one of the systems below System 1: HA1 and A1-1 K= 4 E-3 System 2: HA2 and A2-1 K= 5 E-4 System 3: HA3 and A3-1 K= 6 E-5 For the following parts assume that the buffer above in system2 has been constructed with [HA] =1M and that there is no...
*March 28, 2010*

**chemistry AP**

You have to design a buffer based on one of the systems below System 1: HA1 and A1-1 K= 4 E-3 System 2: HA2 and A2-1 K= 5 E-4 System 3: HA3 and A3-1 K= 6 E-5 For the following parts assume that the buffer above in system2 has been constructed with [HA] =1M and that there is no...
*March 27, 2010*

**chemistry AP**

methyl red has the following color changes red 4.2 -8.3 yellow a)write the ionic equilibrium equation b) If a small quantity of methyl red is placed in a solution with a pH of 4.5 . calculate the approximate value of [In]/[HIn]. What colour would be observed on the basis of ...
*March 27, 2010*

**ALGEBRA**

I NEED help on the following problem can some one help me please and thanks 5x-y+z= 8 2x+2y-3z= 28 x-3y+2z= -15
*March 18, 2010*

**MATH**

can some one please help to solve this problem. Add. reduce to lowest terms, if possible 3/y+3+y+7-y-9+/7/y-3
*March 17, 2010*

**math**

if 9th term of an A.P is 0.prove that its 29th term is double the 19th term.
*March 4, 2010*

**math**

if 9th term of an A.P is 0.prove that its 29th term is double the 19th term.
*March 4, 2010*

**chemistry**

1. PV=nRT Par(1L)=(0.035mol)(0.0821)(25+273) =0.856 atm 2.Ptotal = Par + Pethane Pethane= 1.00atm-0.856atm = 0.144atm
*March 1, 2010*

**science**

Are there any questions on earth that haven't been answered or are to compicated for scientists to get to or understand?
*March 1, 2010*