Friday

October 9, 2015
Number of results: 138,579

**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*

**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*

**Math**

How many m^3 is 4.6cm^3 ? How do I start solving this
*January 25, 2009 by Mark*

**math**

b=1/2jw j= solving variables
*November 13, 2009 by steve*

**math**

What is the answer to t=100(n+3)? Solving for N.
*March 8, 2010 by matt*

**math**

help with solving the system of equations 3x+4y+z=7 2y+z=3 -5x+3y+8z=-31
*March 22, 2010 by Paula*

**MATH**

When solving for x in the equation 5.2x-0.01< 0.2x+3.6 Is the answer x <7.32?
*June 1, 2010 by anonymous*

**Math**

What is the answer and how the steps to solving y-15/32=2 6/7
*November 1, 2010 by LaLa*

**math **

help by solving substitution method 6x+5y=-12
*January 19, 2011 by sally*

**MATH**

i NEED HELP SOLVING THIS WITH SUBSTITUTION 0.1X + 0.4Y= -2.6
*February 19, 2011 by TiffANY*

**math 092**

can i get help with solving problems
*March 4, 2011 by larry*

**math**

if i am solving a linear combanation nd it is y=-2+5 and 2x+7y
*April 6, 2011 by lasharon*

**Math**

What is the definition of a solving equation?
*September 22, 2011 by Mia*

**math**

Having trouble solving: w^2 +5w -40
*November 21, 2011 by charles*

**math**

1. x^2 + y^2 = 20 x+y=6 2. y=x^2-2x+1 y-3=x How would I go about solving these?
*April 26, 2012 by bill*

**Math: solving rational equation**

2/x + 5/3 = 7/x
*January 14, 2013 by Joanne*

**Math**

Solving systems by Multiplying. 4x-2y=7 3x+6y=9
*February 3, 2015 by Student*

**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*

**physics**

Water (η = 1.00E-3 Pas) 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*

**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*

**math**

yhank you very much for solving the question i asked yesterday:the two parners in a business, one partner mortgaged business property to his co-partner for $15,000 at 12% interest. no payments were ever made for 17 yearsyour answer was "assuming the interest is compounded ...
*November 29, 2010 by martin sostre*

**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=
*July 4, 2010 by Akashdeep Singh*

**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*

**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*

**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*

**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*

**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**

Dear Reiny! U r a life-saver! Is there a short cut to how can I set the question or change word problems into math one? It seems that this is my problem! Also, why did my way worked as well with different answers? My answers satisfied all equations as well. Many thanks.
*April 9, 2010 by Me*

**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**

hey everyone, i have a question, by looking at a particular graph, how will you estimate the amount that is asked in a problem? (e.i. revenue, profit, stocks, etc) Do you just guess or something? thank you!
*February 10, 2011 by anonymous*

**Math**

Could someone please help me with this math problem. I am lost on trying to solve this math problem. Add. Simplify if possible. s+r/sr^2 + 2s+r/s^2r Thanks.
*May 16, 2010 by B.B.*

**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*

**6TH GRADE MATH **

A sea cow can stay under water y minutes. This is 11 minutes longer than one - third the time of a hippopotamus can. Write an equation that states the relationship of the minutes these two mammals can stay under water. Complete the table with 16 or 56. Sea cow - 0 Hippopotamus...
*January 8, 2015 by jamar*

**Math - Alegbra 2 some1 plz help?**

in a certain math class, each student has a text book, every 2 students share a book of tables, every 3 students share a problem book, and every 4 students share a mathematics dictionary. If the total number of books is 75.. how many students are in a class? how many students ...
*December 2, 2006 by Agnes*

**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*

**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*

**math question**

Problem Find an approximate value for the rate at which the moon orbits the earth. Assume that the moons orbit is circular.
*October 6, 2008 by sherri*

**math**

hi i startted the problem below by writing a sigma notation of sigma[(2^(n+1))/((n+1)!)] QUESTION: how do i find the sum of 2+(4/2!)+(8/3!)+(16/4!)+... was my attempt wrong, or how do i go from here? thank you!
*March 17, 2011 by kiksy*

**math**

hi i startted the problem below by writing a sigma notation of sigma[(2^(n+1))/((n+1)!)] QUESTION: how do i find the sum of 2+(4/2!)+(8/3!)+(16/4!)+... was my attempt wrong, or how do i go from here? thank you!
*March 17, 2011 by kiksy*

**math**

Original Question is: how many 1/2 miles are in 12 miles? write the division question 12 divided by 1/2= 24 what multiplication question could the model also answer? 12 x 2 =24 This is the one I didn't understand Write the question given as a multiplication question?
*December 10, 2013 by Libby*

**Chemistry**

Question 2: Use your balanced equation to calculate the volume of 0.12 M Na3PO4 to stoichiometrically react with the 3.0 mL of Co (NO3)2. Show your work. 3) Discuss how your supernatant color in the 6 different test tubes supports your calculated result in #2. For example, if ...
*March 1, 2015 by Question*

**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*

**Math**

Gasoline accounts for 85% of the motor fuel consumed in the United States every day. If 8,882 thousand barrels (bbl) of motor fuel is consumed each day, how much gasoline is consumed each day in the United States? Round to the nearest barrel. I need help setting up and solving...
*August 12, 2009 by Haley*

**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*

**basic math**

I am not sure the solvent in this problem, as far as what you do when lining this problem up. The math problem..... Add 150 and 93.17. I don't know if I should be placing 150 at the first decimal or the second. I know I would usually do 150.00 93.17 but the 2nd decimal is ...
*November 3, 2011 by kristen*

**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*

**chemistry**

Solid borax dissolves in water according to the equation: Na2B4O7 10H2O(s) 2Na+ (aq) + B4O5(OH)42(aq) + 8H2O(l) The sign of Ssys will be A. positive B. negative because there are A. more B. less moles of products generated. i've tried solving this problem and i think its ...
*April 7, 2008 by david*

**college algebra**

By setting up and solving a proportion involving x, find the value of x for the car that you have chosen. State the type of car, the mileage, and show both the set up of the proportion and the steps to solve. Include units with your answer. How would I do this problem? What ...
*February 23, 2010 by Stephanie*

**intermediate algebra**

In solving the equation (x-1)(x+2)=30. Eric stated that the solution would be x-1=30Tx=31 or(x-2)T30Tx=32 However, at least on of these solutions fails to work when subsitituted back into the orignal equation. Why is that? Please help Eric to understand better, solve ...
*July 28, 2011 by ROCKY*

**math**

I just started the 5th grade and I don't understand one of my math problems. The problem is Mr. Smith bought 2 similar T-shirts and a belt. He paid $100 to the cashier and received $13 in change. Find the cost of each T-shirt. (shouldn't the price of the belt be in the question?)
*August 10, 2011 by Ty*

**math**

I'm working on some review problems in Math and having trouble on the critical thinking one. The question says is it possible for 2 numbers to have the same LCM and GCF? Explain. I'm not sure where to begin on this. I know how to do both types of problems but don't know how to...
*August 10, 2012 by Brandi*

**math.algebra**

I need help solving: 5x+5-=0 Thanks for the help!!1
*November 4, 2007 by kim*

**math**

how do i go about solving this equation 3x=27-15x
*December 17, 2008 by victoria*

**10th grade math**

3a-a-4=0 solving for the roots,
*February 21, 2009 by michelle*

**math**

solving quadratic equations 8s^3=72s
*May 3, 2009 by Bryan*

**math**

Can you help me solve this solving quadratic equation.x^2-x-1=0
*April 15, 2010 by lauren*

**math**

Stuck on solving this inequality, help please. 3X le 15 and 2x gt -6
*February 10, 2011 by marco*

**math **

how do you go about solving liner equiaions?
*February 14, 2011 by dawn*

**Math**

I need help solving this using U- Substitution (x^2-4)^2 + (x^2-4) -6=0
*April 27, 2011 by joe*

**math**

7 + x < 20 15x > 50 7 + 14x > 35 need help in solving
*May 17, 2011 by not too bright*

**math**

solving equation 20x-7=2+17x
*September 29, 2011 by kathie*

**math**

what is the first step in solving the equation 2x-5=21?
*May 9, 2012 by carlos*

**math**

a-2/6 -5 = a+3/3 SOLVE FOR A solving equations with fractions
*July 12, 2012 by jack*

**Math**

please explain the method of solving: 37 - p = 28 + 4p
*August 5, 2012 by MarySue*

**Math**

I need some help solving this equation. 8x+4-4x=x-14
*September 24, 2012 by Aaron*

**math**

any helpful hints for solving equations?
*May 18, 2013 by stacy*

**math**

What is the hardest part of solving equations?
*May 18, 2013 by stacy*

**math **

(14 hr 3 min) divided by 3. how do i go about solving this
*May 17, 2014 by Emily *

**Math **

solving using the elimination method 0.3x-0.2y=4 0.2x+0.3y=5/23
*August 10, 2014 by Janelle *

**Math**

Went ahead and did the HW the teach recommended but she did not post the answers and I would like to see if im on the right track. Problem 1: Are the vectors (2,−1,−3), (3, 0,−2), (1, 1,−4) linearly independent? Problem 2 : Is the set {x E R^4 : (x1 &#...
*May 11, 2013 by John Rose*

**MATH**

1~ a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different? 2~ Briana is allowed to watch no more than 5 hours of T.V a week. So far this week, she has watched 1.5 ...
*January 17, 2014 by Wendy *

**problem solving**

if a circuit has a3.9k resistor and a5uf capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 105mA
*April 18, 2011 by bobby*

**Math**

Can someone please explain to me exactly what type of math this is (e.g. radicals, linear equations) and how I would go about solving this?
*February 23, 2014 by Anonymous*

**math**

The two cereal boxes shown have corresponding edges in a ratio of 2:3.If the smaller box sells for $2.50 and the larger box for $4.00, which is the better buy? Why? What assumption(s) do you have to make when solving the problem? Estimate, then check. I think the answer is the...
*December 16, 2009 by Lauren*

**Math**

Thank you for the answer now I understand. For the next question I made a mistake this is the question elli has two 8 and 1/2 pound bags of mints. She plans to put 1/12 pound at each place setting. Will she have enough mints? She has 256 guests I think that means 256 place ...
*December 11, 2013 by Matthew*

**Chemistry**

Suppose you wanted to find out how many milliliters of 1.0 M AgNO3 are needed to provide 169.88 g of pure AgNO3. a. What is step 1 in solving the problem? b. What is the molar mass of AgNO3? c. How many milliliters of solution are needed?
*April 22, 2013 by Somer*

**problem solving**

What if part of the fencing is used to build a partition perpendicular to a side? Consider a rectangular region with one partition? With 2 partitions? with n partitions? (There is a surprise in this one!!) What if the partition is a diagonal of the rectangle?
*December 8, 2014 by kakak*

**problem solving**

What is the maximum area of a sector of a circle with P = 100? (Here is another surprise!!! -- could you believe it is r2 when r = 25? How is this similar to a square being the maximum rectangle and the central angle of the maximum sector being 2 radians?)
*December 8, 2014 by kakak*

**math repost**

1. What is the exact value of csc^2 210degrees - cot^2 210degrees? 2. Can you make a generalization about the value of csc^2 theta - cot^2 theta? I'm not sure what to do, I'm familiar with the terms but not sure how to go about solving the question.
*February 11, 2010 by Phillip*

**Physics**

I have these two equations that I'm supposed to set equal to each other and find the answer for h which is height for this problem. But I don't think I'm solving it correctly. 0 - (h/5) = -1.1(v0) - (1/2)(-9.8)(1.1)^2 (v0)^2 = 2(-9.8)(h/5 - h) My final answer was h = 412.90 to...
*July 14, 2011 by Kai*

**Physics**

At an air show, a jet plane has velocity components vx = 695 km/h and vy = 440 km/h at time 4.85s and vx= 933km/h and vy = 465 km/h at time 7.12 s. For this time interval, find (a) the x and y components of the planes average acceleration and (b) the magnitude and direction ...
*January 22, 2012 by mo*

**Physics**

At an air show, a jet plane has velocity components vx = 695 km/h and vy = 440 km/h at time 4.85s and vx= 933km/h and vy = 465 km/h at time 7.12 s. For this time interval, find (a) the x and y components of the planes average acceleration and (b) the magnitude and direction ...
*January 22, 2012 by mo*

**MGT**

i am really stuck big time here... Decision making is an important supervisory function and often a difficult one. the advantages and disadvantages of group decision making, and the differences between decision making and problem solving.
*October 14, 2008 by dawn*

**Algebra 2**

I need help with this problem because I do not have a graphing calculator. Explain how you would solve this equation using your graphing calculator in five steps then give the solution. 2x- 3y=8 5x+ 4y= 11 Also how do you determine how many solutions a system of equations has ...
*October 22, 2007 by Christian*

**Chemisty**

Before solving the problem write a balanced chemical equation Excess aqueous NaI was added to 50 mL of aqueous CuNO3 solution, and 14.2 g of CuI precipitate was formed. What was the molar concentration of CuNO3 in the original solution? Answer in units of M
*April 12, 2013 by Nick*

**physics**

A copper telephone wire has essentially no sag between poles 34.0 m apart on a winter day when the temperature is −20.0C. How much longer is the wire on a summer day when the temperature is 32.0C? (Note: Table 19.1 is available for use in solving this problem.)
*December 13, 2014 by anonymous*

**Calculus**

How do I solve for lim h->0 (((a+h)^2 + 1)/(3(a+h)+7) - ((a^2 + 1)/3a + 7)) and then all divided by h? The question was use the limit definition to find the derivative of f(x)= (x^2 + 1)/(3x + 7). I tried solving what I did above, but had no luck. I used wolfram alpha to ...
*October 12, 2010 by Blake*

**please help me in math**

The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or dont ride a motorcycle. Among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? Express your answer as a ...
*January 12, 2015 by Aspen*

**Math: Applications of Dot Product**

15) In Question 14, if the ramp makes an angle of 20 degrees with the level ground. Find the magnitude of the force tending to lift the crate vertically. ++++Textbook Answer for Question 15: 108.3 N ---- 14) A crate is being dragged up a ramp by a 125 N force applies at an ...
*February 23, 2008 by Anonymous*

**chemistry**

I need help solving this question.. An aqueous solution of ethylene glycol (C2H6O2) IS 40% ethylene glycol by mass, and has a density of 1.05g/ml. what are the molarity, molality fraction of the solution?
*July 7, 2010 by Linda*