Thursday

December 8, 2016
Number of results: 160,617

**chemistry**

Pvap (mm-Hg) of 100g 24%NaOH in H2O @100C? When Pvap pure H2O @100C is 760mm-Hg Pls where to start solving this problem? What is the equation? What are the staeps to get to the right answer?

*May 20, 2012 by marina*

**Chemistry.**

Please explain how to solve this question, and why you use your method to solve it. I am very very stuck. Gold is present in seawater to the exteen of 0.15mg/ton. Assume the density of the seaswater is 1.03g/mL and determine how many Au atoms could concievably be extracted ...

*September 21, 2006 by Philip*

**math**

pls. explain how to get this: A number x is the harmonic mean of two numbers a and b if 1/x is the mean of 1/a and 1/b. a) Write an equation to represent the harmonic mean of a and b. b) Determine the harmonic mean of 12 and 15. c) The harmonic mean of 6 and another number is ...

*November 9, 2011 by hi*

**Maths**

hello Can someone please help me with solving simultanaous equations using graphs My problem is that i don't know how to plot them on the actal graph and nor I know how to plot the gradient withing this paticular situation I need help with some steps please MY IGCSE's are ...

*May 3, 2008 by JOJO*

**college physics**

using the quadratic equation on a 2 dimensional projectile motion problem... i am solving for tf and i have it worked all the way down to: -100m(tf)-100m(tf) / -10m/s^2(tf)^2 or -200m(tf) / -10m/s^2(tf)^2 is the answer 20 seconds? algebra is not my strong suit =(

*November 29, 2009 by dave*

**social studies**

To develop your self-confidence: learn to rely mostly on intuition. develop a base of knowledge for problem solving. use enough negative self-talk to appear humble. downplay acquiring a lot of facts.

*October 27, 2010 by dina*

**Algebra 2**

How would I go about solving the following problem? There were different questions with matrices in them, but this one was different from the others. For the matrix product [ -5 , 3 ][ 6 , -3 ] p = [ 2 , -2 ][ 4 , -3 ], determine the expression that gives the value of p12. I ...

*October 12, 2015 by Michaela*

**math-solving for x with e**

1.) e^(2x) - 3e^(x) - 4 = 0 2.) e^(1-2x) ((e^(3x+6) - e^(2x)) = 0

*February 13, 2011 by Amanda*

**chemistry**

Please judge my answer, thank you Question: What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10-10? Answer: It is imperative to initially set up ionization. THen, it becomes important to write the Ka expression, after which setting up an ICE table becomes ...

*April 15, 2008 by Abigail*

**Calculus--Reiny**

V = Radical The expression: V2(V5-12V3)-V3(V8-2V30) can be written in simplest form aVb-cVd, where a, b, c ,d are all positive integers. The value of a + b + c + d is ________. So after solving all this out, I arrived at 7V10 - 14V6. That - is beside the 14, and Im only ...

*October 4, 2011 by -Untamed-*

**Maths Problem solving**

when a cross tile is placed on a number chart, the number covered by the centre square is the average of all the numbers covered, no matter how large the cross is. Explain why.

*April 25, 2012 by Anonymous*

**Algebra**

Please show me step by step on solving this problem? log₅(2x-9)+ log₅(x+2)= 1 Thank you I'm getting 2x²-5x-28=0 which is a empty set. Trying to make sure I'm correct if I am. Thanks so much for your help

*December 1, 2012 by sandy*

**algebra**

The length of a rectangle is 3 more than twice the width. The area of the rectangle is 119 square inches. What are the dimensions of the rectangle? If x = the width of the rectangle, which of the following equations is used in the process of solving this problem?

*November 21, 2014 by steven*

**problem solving with fractions**

mr. rosen needs to make 1 1/2 times as many pizza tonight as usual because he expects ta large crowd. if he usually makes 24 pizzas, how many pizzas should mr. rosen make?

*September 8, 2015 by sam*

**English**

I've went over many search engines and I still cannot find anything to do with competetion betweeb employees can someone help thnnkx Please state your complete question. If you posted something earlier, I don't remember the question. Thanks. =) http://glinden.blogspot.com/2006...

*May 8, 2007 by QAE*

**Calculus question please explain**

I know the answer to the first one is "e" and the answer to the second one is "a "but I have no idea why please explain how to do these two problems. I am very confused with this method. Thank you! The “Cobb-Douglas” productivity function for a factory is q = 100x0.8y0.2, ...

*December 5, 2014 by Jennifer *

**Math**

4th grade math problem: Paper route money collected Monday $4.00 Tuesday $2.50 Wednesday $6.00 Thursday $7.50 Friday $4.00 She's being asked for the "median" and the "mode" of this table. Really my question is, what is a mode?

*November 15, 2007 by Rhiannon*

**Math**

Young and Company owes bond holders $5,500 interest at the end of each quarter for the next five years. How much must they deposit now at 8% interest compounded quarterly to yield an annuity payment of $5,500? -- I am pretty sure I know how to do the problem but I am just ...

*December 11, 2014 by Jennifer*

**MATH HELP NOW**

We are doing solving polynomials using the zero factor property and here is the question: Marie has a rectangular board 18 inches by 23 inches around which she wants to put a uniform border of shells. If she has enough shells for a border whose area is 282 square inches, ...

*October 26, 2010 by MARIAH*

**PROBLEM SOLVING IN MATHEMATICS**

the number of students in a school doubles every month. if there are 14000 students in the school, how many students were there in the school four months ago?

*October 25, 2011 by alya*

**math**

I am having trouble solving this problem. In 1994, the population of the Las Vegas metropolitan area was about 1,076,000 with an average annual growth rate of 6.5%. Assume this growth rate continues into the future. I have to estimate the population of Las Vegas each year. I ...

*February 27, 2008 by Vanessa*

**Physics**

An electron is a subatomic particle (m = 9.11 *10^-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.31 * 10^5 m/s to a final velocity of +2.21 * 10^6 m/s while traveling a distance of 0.040 m. The ...

*September 20, 2010 by Gerald*

**Lea408 **

can someone please tell me if I am right Like optical scanners, capacitance fingerprint scanners generate an image of the ridges and valleys that make up a fingerprint. But instead of sensing the print using light, the capacitors use electrical current. (Points : 1) True False...

*June 8, 2014 by Scott *

**Chemistry**

A 1.33 m solution of the solute diethyl ether dissolved in the solvent tetrahydrofuran is available. Calculate the mass(kg) of the solution that must be taken to obtain 0.4716 kg of diethyl ether. Name/Formula: diethyl ether = (C2H5)2O tetrahydrofuran = C4H8O Molar Mass(g/mol...

*March 1, 2010 by Luc*

**5th math**

jim can pack a bag of groceries in 6 seconds how many can be packed in 15min solve as a fraction division problem to answer the question? Would it be 25?

*January 10, 2011 by jill*

**Algebra Math**

Thank You, Declan for answering my question, but I am still haiving trouble on the problem, could you explain to me of how you went about getting the answer -55/4, in deeper detail.

*February 5, 2012 by Kristi*

**Administration of Criminal Justice**

You are the captain in the police department’s special response unit. Your unit normally handles many special projects for the chief of police, from providing officers for parades and demonstrations to targeting an area in which there is a serious ongoing crime problem. Your...

*August 31, 2011 by Patricia*

**Chemistry**

Dear sir, madam, I am having a little problem with the solution my chemistry book gives on the following problem: We have a person whose body vitamine C concentration decays according to the following formula: 1500*0,974^t. Question A is no problem, but then question B: "...

*October 17, 2012 by Tom*

**gen200**

• Identify a problem in your day-to-day life that you would like to solve (e.g., time management). • Using the information from your Week Three readings as a guide, prepare a 700 to 1,050-word paper in which you develop a research strategy to find a solution for your ...

*August 5, 2010 by Anonymous*

**ENGL**

These three questions I am having difficulty in solving. Can you help me here. Question 1 - a) Whenever children in the United States turn on the tv, B) they are more likely to encounter violence on the screen. A is an independent clause. A is a dependent clause B is an ...

*March 3, 2011 by David*

**mathematics - problem solving**

Andy took a reading test.He read 97 words per minute.If a book has an average of 250 words on a page,how many pages can Andy read in one hour ?

*August 4, 2008 by ryan*

**Physics**

A girl sits on a merry-go-round at the position marked by the brown circle. A boy gives the merry-go-round a constant tangential push for 0.21 seconds as shown in the animation (position is in meters and time is in seconds). What is the magnitude of the tangential acceleration...

*January 6, 2011 by teal*

**Problem Solving**

Lindsey has 75% as her final grade, but after she writes her exam she gets 85%. If her exam is worth 7.5%, what is her final grade.

*June 14, 2008 by Carrie*

**Math**

Rewrite each problem as a multiplication question. Model your answer. 1. 2/5 divided by 5 2. 3/4 divided by 2

*February 15, 2016 by Anonymous*

**math, help**

how do i write the equations so i can solve it i will do the solving but help me out with the equation please.for the following: Four pencils and five pens cost$2.00. THree pencils and four pens cost $1.58. Find the cost fo a pencil and the cost of a pen. and then also for ...

*January 13, 2007 by jasmine20*

**Chemistry (Dr.Bob222)**

The half-life of P-32 is 14 days. How long after a sample is delivered can a laboratory wait to use a sample in an experiment if they need at least 10 percent of the original radioactivity? I need help on how to set up this problem. What is the general equation to use for a ...

*November 7, 2013 by K*

**physics**

how would i go about solving this problem? what formula shoud i use? can you please show me in steps how to do this, thanks a lot: The critical angle of refraction for calcite is 68.4degrees when it forms a boundary with water. Use this information to determine the speed of ...

*March 12, 2009 by physics*

**Algebra II**

Find (f+g)(x),(f-g)(x),(f*g)(x), and (f/g)(x) for each f(x) and g(x) Now we were working well on this until we got to this f(x) and g(x). This was something our teacher didn't bring up. f(x) = 8x^2 g(x) = 1/x^2 How would you go about solving the problem with the fraction as g(...

*January 11, 2015 by Alejandro *

**PROBLEM SOLVING IN MATHEMATICS**

what do you need to know to solve this? you have kite ABCD. angle B is at the top of the kite and measures 80 degrees. angles A and C are on the sides and angle D is at the bottom of the kite. what is the largest siza that angle A or C could be?

*October 14, 2011 by alya*

**PROBLEM SOLVING IN MATHEMATICS**

what do you need to know to solve this? you have kite ABCD. angle B is at the top of the kite and measures 80 degrees. angles A and C are on the sides and angle D is at the bottom of the kite. what is the largest siza that angle A or C could be?

*October 18, 2011 by HELP ME!!!!*

**problem solving - math**

3 persons are to divide among themselves 21 equal cask, of which 7 are full, 7 are half full, and 7 are empty. how can an equitable division be made, without pouring the wine from any cask into any other, in such a way that each person receives the same amount of wine and the ...

*October 3, 2013 by confused*

**math - question**

In a television game show, there are five questions to answer. Each question is worth twice as much as the previous question. If the last question was worth $6400, what was the first question worth? is the answer 400

*May 12, 2009 by anonymous*

**math**

i need help with this problem:2x-y=-4 -x-y=5 when you answer this question can you plz include the steps you did to get the final answer?

*November 1, 2007 by asha*

**Buffer solution**

Solve an equilibrium problem (using an ICE table) to calculate the pH. a solution that is 0.205 M in CH3NH2 and 0.110 M in CH3NH3Br. i used th Ka of CH3NH2 and set up the problem as Ka=[H3O][CH3NH2]/[CH3NH3Br], but that was wrong. So i switched the equation to Ka=[H3O][...

*March 27, 2010 by Kyle*

**Statistics**

For Mathguru_ from statistic question on Tuesday April 10, 2007 follow up question- what if I wasn't given the standard deviation either- how would I solve this problem Other tutors can help, but without the previous information, it is impossible to help you. Please repost ...

*April 11, 2007 by Angel*

**English literarure(a streetcar named desire)**

infact my problem is that i dnt know how to start answering this empathy question.Can you please help me??th question is thet; Imagine you are stanley.write your opinion about Blanche (scene 1).please help me.

*January 26, 2008 by pallaa*

**Calculus**

Given the equation xy = 2, set up an integral to find the length of path from x = a to x = b and enter the integrand below. I did the integral from b to a and set it equal to the sqrt(1+4/x^4), because I found y to equal 2/x and the derivative to be -2/x^2, but I think I am ...

*March 13, 2009 by Katelyn*

**Calculating Quarts from Pints in a Ratio Help**

Can someone please explain the steps to solving this problem without a calculator? Seth drank three pints of water a day for 6 days. How many quarts of water did he drink

*January 30, 2014 by Angela*

**chem II**

0.959 g of a hydrocarbon is dissolved in 10.00g of benzene. The freezing point of the solution is 1.16C. Find the molecular mass of the hydrocarbon. Benzene has a Kf of 5.12 and a freezing points of 5.53 degrees C. Not sure how to go about solving this problem? Thanks!

*February 8, 2015 by Steph*

**Grade 11th Maths**

(Second Time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A-B=A then show that A∩B=Ø

*July 4, 2010 by Akashdeep Singh*

**algebra**

Please help f(x) = 3x² + 2 x= 3 my question, do I start by solving x² first then multiply by 3 and adding 2 f(3= 3 * 9 + 2 = 29 or do I multiply first 3*3 =9² +2 = 83 I'm pretty sure we resolve the exponents first but need some help

*July 13, 2011 by kelly*

**Science(physics)**

A spring 20cm long is stretched to 25cm by a load of 50N. What will be its length when stretched by 100N assuming that the elastic limit is not reached? I want the answer abd solving to this question and also the formula for young modulus of elasticity

*January 19, 2016 by Rachel*

**Math - Algebra**

Am completely stuck on this one, so am having a hard time explaining the step-by-step instructions for solving the problem below. Help would be greatly appreciated. Two travelers are 220 kilometers apart at noon and are headed toward each other along a straight road. They meet...

*October 12, 2007 by Hunter*

**math**

As of July 2004, the population of the United States was 293,027,571. If more than half of these people live within 80 kilometers of an ocean, about how many people live within distance? I guess I have to look to find the conversion of kilometers to diatance. I had no luck in ...

*December 17, 2008 by Nehemiah*

**PHYSICS**

Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side lengths are 6 m and the ...

*February 8, 2011 by KIKSY*

**physics**

Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side lengths are 6 m and the ...

*February 8, 2011 by KIKSY*

**physics**

Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side lengths are 6 m and the ...

*February 8, 2011 by APpreciative student*

**physics**

Water (η = 1.00E-3 Pa·s) is flowing through a horizontal pipe with a volume flow rate of 0.0153 m3/s. As the drawing below shows, there are two vertical tubes that project from the pipe. Assume that H = 0.0477 m and L = 0.670 m I know how to plug in everything but, my ...

*November 16, 2012 by Katherine*

**Economics**

Help solving this question, please help me on how to do it. Don't give me the answer... If the banking system has $15,000 of total reserves and a reserve requirement of 20%, the money supply can reach a maximum of $30,000. $65,000. $75,000. $150,000.

*October 4, 2009 by Chris*

**math**

4x-y+z=-5 2x+2y+3z=10 5x-2y+6z=1 solving x,y,z with Matrices

*May 4, 2008 by yumei*

**Math**

Need help in solving 0.5b+3.4=0.2b+12.4

*November 3, 2008 by Maddy*

**math 116**

Help solving this: 8x-(2x+5)=25

*January 26, 2010 by lisa*

**math**

solving this equation...0.9x + 9 ¡Ü 1.3x-6

*March 17, 2010 by amy*

**math**

what is solving mean

*October 4, 2011 by memeh*

**math**

Solving the proportions b : 16::6 : 4

*November 1, 2011 by rashawn*

**Math**

How do you solve a(x+1)= b solving for x

*September 20, 2012 by Brittney *

**Math**

How do you solve a(x+1)= b solving for x

*September 20, 2012 by Brittney *

**math, solving equation**

x^3 + 4x^2 - 3x - 2 = 0

*September 25, 2012 by Haley*

**math**

solving with elimination 7x-4y=13 2x-5y =-4

*April 12, 2013 by anatoliy*

**math**

solving with elimination 7x-4y=13 2x-5y =-4

*April 12, 2013 by anatoliy*

**math**

solving with elimination 7x-4y=13 2x-5y =-4

*April 12, 2013 by anatoliy*

**math word problem**

"Adult tickets are $6, Kids are $3. If the total sales are $585, but only 120 tickets were sold, how many adult tickets were sold? If this was 130 it would be easy: $3+$6 =$9; $585/$9 = 65 tickets. The problem is the question specifies 120 tickets.

*March 25, 2013 by vince*

**physics**

You jump from the end of a diving board that is 3 meters above the water. You spring upward from the end of the board with an initial velocity of 5 m/s. How long are you in the air? What is the speed as you hit the water? I need to know the steps in solving the problem. Thanks!

*September 7, 2007 by Jaclyn*

**ALGEBRA again still need help !**

need help solving this word problem, converting from words to an equation 48 equals a number increased by 6, and the sum, all multiplied by 5. I have the answer, but I am unable to set up an equation. answer - x=3 3/5

*October 9, 2008 by Rose*

**Grade 11th Maths**

(Second time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A⊂B, then prove that B'⊂A'

*July 4, 2010 by Akashdeep Singh*

**College Algebra**

Hello - I am stuck on this problem and I'm in serious need of some help. I don't understand this question at all. The problem is: Find the equilibrium quantity and equilibrium demand function for the given: Supply: P=45q Demand: P=q^2+10,000

*February 9, 2013 by Jessica*

**Psychology**

1) The type of learning that involves reasoning, problem solving, language, memory, association of ideas, and other mental processes is Cognitive learning. Is this correct? 2) When you are figuring out how to memorize information for your college tests, you are engaging in ...

*November 11, 2009 by Jack*

**algbera**

In solving the equation (x + 3)(x + 1) = 48, Eric stated that the solution would be x + 3 = 48 => x = 45 or (x + 1) = 48 => x = 47 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to ...

*May 1, 2011 by kozy*

**algebra**

1. In solving the equation (x + 3)(x + 1) = 48, Eric stated that the solution would be x + 3 = 48 => x = 45 or (x + 1) = 48 => x = 47 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to...

*June 20, 2011 by Taina*

**Algebra**

In solving the equation (x + 3)(x + 1) = 48, Eric stated that the solution would be x + 3 = 48 => x = 45 or (x + 1) = 48 => x = 47 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to ...

*October 13, 2011 by Sierra*

**Math (Algebra)**

The Problem is that 3 people go to lunch. They decide to share the $12 bill evenly. How much does each person pay? The Equation is 3x=12 #1. What is the value of x? #2. Solve for x #3. Answer the question.

*May 6, 2013 by Sydney*

**English**

1. What's your favorite class? 2. It's math. 3. It's math class. 4. It's a math class. 5. My favorite class is math. Which are the right answers for the question? 6. What's your favorite subject? 7. It's math. (What about the question, #6? Is the question the same as question ...

*March 9, 2010 by rfvv*

**science and medicine**

I don't have any idea how to solve this. Could someone show me the steps in solving this word problem? I am at a loss! Abus leaves a station at 1 pm., traveling west at a rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east at a rate of 48 mi/h....

*March 21, 2007 by andy*

**math quick question**

I got a problem that states which graph represents the sequence of 1,2.5,4,5.5,7.. Should the graph start at 1,1 or 0,1?

*March 10, 2012 by rob*

**Math**

How do you know if a word problem question is asking for simple interest or compound interest? P.s. I already know the formula and what both of them mean

*March 29, 2015 by Katy*

**math**

Write a real-world problem that you could represent with the equation 4x+5=37. Solve the equation to find the answer to your question.

*January 27, 2016 by gabe*

**Math**

If you are standing near the edge of the top of a 200 feet building and throw a ball vertically upward it will be modeled by the function s(t)=-16t^2+64t+200 where s(t) is the ball's height above ground in feet and t is seconds after the ball was thrown. A) When does the ball ...

*December 9, 2015 by Anonymous *

**Math**

If you are standing near the edge of the top of a 200 feet building and throw a ball vertically upward it will be modeled by the function s(t)=-16t^2+64t+200 where s(t) is the ball's height above ground in feet and t is seconds after the ball was thrown. A) When does the ball ...

*December 10, 2015 by Anonymous *

**3 grade math**

I can answer this question, but I need to explain to our child how to solve it using the method requested, not an algebra solution. Child is becoming frustrated and confused while attempting to answer these questions. the instructions for solving, are try 3 numbers that add to...

*August 23, 2012 by Paulette*

**Pre-Calc**

I do not know which value I am solving for or how to get there these are the instructions and info given. Use the given conditions to find the exact value of the expression. sinx=(-5/13), tanx>0, sin(x-(pi/3)) There is no question and the answer is ((12(sqrt3))-5)/26 from ...

*March 10, 2015 by Seffi*

**Math(problem solving)**

Four darts are thrown at this dartboard. If all four darts hit the board, how many different point totals are possible? there are 4 circles with point totals: working out from the middle bulls eye.. bulls eye = 9 2nd circle = 7 3rd circle = 4 outter circle = 1 please help, i'm...

*March 6, 2013 by sarah*

**Average problem word solving epicness**

In order to graduate, a bo needs an average of 65 percent for his five major subjects. His first four grades were 55, 60, 65, and 65. What grade does he need in the fifth subject in order to graduate like a boss?

*November 13, 2014 by factions*

**For <b>marie flore joseph</b>**

Please do not add your new question as a response to somebody else's post. click on "Post a New Question" above to post your problem. Here is your question : Math - marie flore joseph, Monday, April 5, 2010 at 10:37pm the difference of the squares of two consecutive odd ...

*April 5, 2010 by Reiny*

**math**

how do i do x2+12x+32 x2+12x = 14x+32 subtract 14x from each side 14x=32 divide by 2 7x=16 x=16/7, which is 2 and 2/7 ok maybe you typed that question wrong? is it x^2 + 12x + 32 ? if it is then the solution is: (x+8)(x+4) because when you multiply them you use foil; so ...

*February 14, 2007 by bob*

**Business Communications**

Is the subject line "Improving Customer Service" appropriate in a message to superiors? A. Yes, because it focuses on solving the problem. B. No, because the word "service" makes the subject line seem negative. C. No, because the boss is likely to think that you caused the ...

*August 15, 2010 by Rain Misoa*

**7th Grade Math**

I need help with solving the answer to the problem below. What is the percent decrease, to the nearest percent, of the number of books checked out from June to July? June - 623(# of books checked out) July - 715(# of books checked out)

*April 13, 2016 by Tina*

**Math**

Problem Solving Work Backward The temperature was 16 degree Celsius when Becky returned home at 6 p.m. The temperature was 4 degree Celsius warmer at 3 p.m. than it was at 6 p.m. It was 3 degree Celsius warmer at 12 noon than it was at 3 p.m. What was the temperature at 12 noon?

*May 3, 2013 by Quan*

**college**

use the five steps for problem solving. the average of two test scores is 79. if one test score is eleven less than the other, what are the two test scores?

*December 8, 2010 by kristie*

**geomatry deductive reasoning**

a sequence begins -4,1,6,11 find the rule that generates the sequence. Then give the 5oth term is the sequence. What type of reasoning inductive or deductive, do you use when solving this problem?

*October 23, 2011 by manal*

**geomatry deductive reasoning**

a sequence begins -4,1,6,11 find the rule that generates the sequence. Then give the 5oth term is the sequence. What type of reasoning inductive or deductive, do you use when solving this problem?

*October 23, 2011 by manal*