Thursday

December 18, 2014

December 18, 2014

Number of results: 126,624

**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 *

**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*

**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**

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*

**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*

**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 *

**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 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*

**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 221**

Math 221 - Ms. Sue, Sunday, July 13, 2014 at 2:24pm I've done several problems for you. Now it's your turn. How do you think this problem should be solved? Answer this Question I was thinking that I should multiply the numerators and denominators
*July 13, 2014 by Erica*

**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*

**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*

**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**

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*

**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*

**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**

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=30¨T¡úx=31 or(x-2)¨T30¨T¡úx=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**

Problem Solving: Work Backward Will arrived at his mother's office at 3 p.m. It took him 30 minutes to walk from his home to the mall. He was in the mall for 45 minutes. It them took him 15 minutes to walk to his mother's office. At what time did Will leave home?
*May 2, 2013 by Quan*

**math question**

How do i solve a problem like this? I took a study guide and i messed up on some problems so can i get some help on a few that i missed so i can know how to complete them??
*June 6, 2014 by matt*

**3rd grade**

my dauter have a math problem and I dont no how to help her. this is the question: estimate each diffirence using compatible numbers for exc. 53-24=30 the next is 346-78=? we don`t now the answer thank you.Jessi
*October 1, 2009 by jessi*

**math**

Hi I'm Having a problem with a question in the application of the maximum and minimum (derivative) I want to prove that the height = 3 and i had this relation ===> H = h + r and h = - 2r ! I'm sure that (H) = 3 r But I Can't get the answer of (h) in positive ... so can I ...
*January 16, 2012 by yousif*

**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*

**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*

**Math**

I need help with these three math question. 1st question. What is the additive inverse of 5 on the 12-hour clock? 2nd question. What is the equivalent number on the 12-hour clock. -22 the choices for this question is, 5 or 2 or 3 or 1. 3rd question. I need to find the additive...
*February 5, 2011 by Kimberly*

**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*

**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 plane’s 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 plane’s average acceleration and (b) the magnitude and direction ...
*January 22, 2012 by mo*

**math,help**

can someone help me with this i am lost now i've been doing math for the past 8 hrs. Problem # 1 solve: 4(x-10)-3x=x-40 Problem # 2 solve for t: a = p + prt Problem#3 translate to an algebraic equation 7 less than the quotient of a number and 3 is twice the same number problem...
*March 18, 2007 by jasort20*

**Math**

Here is the math problem. 150 is 75% of what number? I know the rate is 75 percent and the base is 150. I am looking for the amount. My questions is how to find the answer? Do I divide? Okay maybe I am missing a huge section as to finding the answer to this question. I went ...
*June 28, 2007 by marinda*

**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*

**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*

**Algebra 1**

Find the y-intercept of the two coordinates ( 2, -5) and ( 6, 3). Please help me with this question and please explain to me and show me how to find Each step to solving the y- intercept. Thank you 😄
*November 3, 2013 by Lucy*

**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 −20.0°C. How much longer is the wire on a summer day when the temperature is 32.0°C? (Note: Table 19.1 is available for use in solving this problem.)
*December 13, 2014 by anonymous*

**Math**

What is the exact value of csc^2 210degrees - cot^2 210degrees? 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*

**Grade 3 math**

Never thought I would have a problem with Gr. 3 math - lol - but it goes like this. Write the addition or subtraction fact you will use to calculate each answer. Then add or subtract. 70 50 120 160 +30 +60 -30 -80 My question is what would the fact be???
*December 30, 2007 by rebecca*

**math...help please!**

ok i REALLY am stumped. please help! it is a sequence problem here is the problem.... 120,60,30 __, __, __. if you could give me the rule for this problem and the next 3 numbers that would be so great!!!!!!
*September 18, 2007 by Rebekka*

**problem solving**

If a circuit has a 3.9 k ohms resistor and a 5 uF capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 1.5 mA.
*November 1, 2010 by milton*

**algebra**

I've seen the exclamation point (!) put after numbers (ex. 3!), but I don't know what they mean. Can somebody tell me the steps on solving a problem like this? Thanks!! ! means factorial. 5! means 5*4*3*2*1 5!/3! means (5*4*3*2*1)/(3*2*1) which is equal to 5*4 or 20 Ohhhhhhhh...
*April 24, 2007 by Emily*

**Trigonometry (Logarthims) **

Give checks to the following two questions Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" without logarithms i can do this problem easily and i have. but when i try solving it with logarithms i keep getting...
*February 24, 2011 by Anon*

**Math**

I need help solving this logarithmic function: x = log3(4^3).
*January 31, 2008 by Danielle*

**Math**

I need help solving this using the substitution method 4p-2q= 16, 5p + 7q= 1
*April 17, 2008 by anonymous*

**math**

I need help solving this non-linear inequality:6x^2>6+5x
*April 30, 2008 by Brittany*

**math**

what are the methods on how to do comparisons? (solving linear systems)
*July 5, 2010 by amitaf*

**math**

solve for x x+8=-1 solving with addition and subtraction(type in)
*May 14, 2009 by micheal*

**math**

I could use some help solving this equation pleasex^3 x+5=3
*May 28, 2010 by tammy*

**Math**

I'm stuck on solving this one. If I could get some help please. -6 le x/2 - 4 lt -3
*February 11, 2011 by marco*

**Math**

solving using the solution method. x+10y=41 x+9y=37 =
*July 2, 2011 by Ms.Ellis*

**math**

I need help in solving two-step inequalities. 7 - 4w <_ 19
*November 2, 2011 by jared*

**Math**

Given f9x0=x2=3x-5 on {-1,3} show f(x)= 10 without solving for x
*June 11, 2012 by Mark*

**Math**

When solving a system algebraically how can you tell if there is no solution
*February 17, 2014 by Taylor*

**Math**

Identify the extraneous solution when solving √x+2= x
*April 5, 2014 by Alice PLEASE HELP ME*

**Math**

Identify the extraneous solution when solving √x+2= x
*April 5, 2014 by I DONT UNDERSTAND*

**Math **

solving using the elimination method 2r-7s=-6 7r_2s=32
*August 10, 2014 by Keya *

**math**

solving equation (b-c)x² + (c-a)x + (a-b) = 0 folling roots are obtained
*September 10, 2014 by Nithin*

**Math**

Solving long division polynomials 5x-6/10x^2-7x-6
*October 5, 2014 by Jeannette*

**Math**

What is the first step in solving the equation 3/4 divided by 2/3
*November 26, 2014 by Amy*

**chemistry**

Benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1 C . At what temperature does benzene boil when the external pressure is 410 ? This is how I am solving this problem, ln(415/760)= (30720/8.314)*(1/80.1 - 1/T2) It is asking to answer using two...
*January 25, 2009 by Lost*

**Chemistry - electron configuration**

Hello Dr.Bob. Could you please take a look at the following question? I know the correct answer for it, but I'm not sure how to go about solving it. Which ground state electronic configuration will most readily ionize to a 2 + cation? A) 1s22s22p63s23p64s23d10 B) ...
*April 19, 2013 by Constantine*

**biostatistic**

I am sorry, I do not know how one question is printed so many times. There was some problem in submission of question and when it is submitted, it is printed so many times.
*December 11, 2012 by nono*

**Physics**

You are given vectors A = 5.0i - 6.5j and B = -2.5i + 7.0j. A third vector C lies in the xy-plane. Vector C is perpendicular to vector A and the scalar product of C with B is 15.0. Find the x and y components to vector C. Here's the step by step from the book that I'm having a...
*August 30, 2014 by Vectors*

**calculus**

A question on my math homework that I can't seem to solve... Rotate the region bounded by y=x^2-3x and the x-axis about the line x=4. Set up the integral to find the volume of the solid. I'm pretty sure that the integral is in terms of (dy), and has bounds of 0-4. Using the ...
*January 24, 2009 by Michelle*

**Psychology**

A theory can be defined as: a an attempt to test behavior and thought process. b an accurate description of problem-solving behavior. c the basis for relationships among facts and principles. d the application of the scientific method through statistics. I think the answer is ...
*April 25, 2011 by Nicci*

**to bobpursley,math**

This is what i have am i wrong or correct.Or how can word it or modify it to be with what the directions are asking? Directions: Create one statement in English representing an algebraic relationship. My answer: PROBLEM: A DOZEN EQQS COST $1.20. WHAT IS THE PRICE OF EACH (1) ...
*January 1, 2007 by jasmine20*

**problem solving**

Suppose your car gets 36 miles per gallon of gasoline, and you are driving 45 miles per hour. Using unit analysis, find the number of hours it takes to use 1 gallon of gas. I got 48 minutes but I'm not sure.
*December 8, 2012 by ben*

**math**

I REALLY NEED HELP IN SOLVING THIS PROBLEM PLEASE HELP!your high school diploma from american academy landed you to a job paying good money.you were wise and saved $150,00to buy your own company.the nuts are .01 pernut.you say you are wise and you are buying 3million nuts and ...
*March 8, 2008 by JESSICA*

**graph**

How "Graphs" can play a role in the daily practice life in solving different kind of problem Graphs are visual representations of quantitative relationships. Viewing the relationships visually can make certain facts about these relationships more evident. I hope this helps. ...
*January 18, 2007 by queen*

**math**

write and solve a word problem that can be modeled by the difference -4 - 10. My dog lost 4 ounces this year And 10 ounces last year. What is the Difference in weight loss? Or what is total weight lost? I am not sure I'm doing this right. The answer I got to the original ...
*September 20, 2014 by alexis*

**Math**

How do you work this problem step by step? p-12 when p= 22 We don't know what book you are using and probably none of us has a copy if you told us the name of the book. Please post your question and someone will try to help. Please be specific and tell us exactly what you don'...
*September 7, 2006 by tonya*

**Math**

I have a problem..... -4(2x-3)=-8x+5 I understand first you distribute the -4 so you would have -8x+12=-8x+5 Then if you try and move x over to either side you completley get rid of x.... am I missing something or is this problem not solvable? Thank you I think I just solved ...
*March 29, 2007 by russell*

**Math**

Need help solving this problem please. Andrei buys a painting and sells it to Boris Andrei makes a 60% profit on the sale Boris sells the painting to Clarissa Clarissa pays 1.5times the price that andrei paid for the painting Boris made a loss What is his loss as a % of the ...
*June 23, 2008 by Maggie*

**Chemistry**

The boiling point of an aqueous solution is 102.16 C. What is the freezing point? Dr. Bob, If you happen to answer this question, I was the one that a question earlier about how to know what Kf constant to use [water vs benzene?] and i didn't notice that it was given in the ...
*February 17, 2012 by Tracy*

**chemistry**

Posted a question earlier but it was the wrong question. If anyone could help it would great if you could explain this would help also. Thanks ^ = subscript Calculate ke for(equlibrium concentration below problem 2CO^2(g) + heat 2CO(g) + O^2 [0.103] [0.024] [1.18 x 10^2]
*January 5, 2010 by Shanta*

**math**

What models can be used to help explain the concepts of addition and subtraction of rational numbers? What are the benefits to using such a model? What limitations does the model have? Create an addition or subtraction problem and demonstrate how the model might work. ...
*October 26, 2010 by glenn*

**stastics**

solving problem the chicago public school system has about 680 schools about 130 of the schools will be closed. if the five schools are chosen at random find the probability that at least three of them willl be closed
*April 3, 2013 by lilly*

**Algebra**

Is (0,3) a solution to the equation y =x + 3 his is my teachers answer to my question of usage of the 2 numbers mentioned as possible solutions. yes it does make a difference. (4,8) is called an ordered pair. Ordered pairs are always in the form (x,y) That means the problem ...
*August 26, 2014 by Faye*

**Math - Alegbra 2**

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 AS*

**College Algebra**

Problem: Use Common or Natural Logarithims to solve the exponential equations symboliclly. 2e^7x+4=4 (Round to four decimal places) I tried solving this way 2e/2^7x+4=4/2 e^7x+4=2 ln e^7x+4=ln 2 7x+4=ln 2 7x+4-4=ln 2-4 7x=ln 2-4 7x/7=ln 2-4/7 x=ln 2-4/7 then I at a lose at ...
*November 14, 2010 by Lee*

**Math**

Let f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). How do I solve this problem? I understand this so far f(a)=f(a+15) 1/(7+a) + 15/(a-8) = 1/(a+22) + 15/(a+7) I am lost after that This is a multiple choice question and I am not getting any of the choices a.) -161/...
*October 12, 2008 by David*

**ICS**

I need help solving this question. "Two charges are 10 meters apart. The charge on the positive particle is 1.0 C and the negative charge is 10 Coulombs. Calculate the magnitude of the electrostatic force of attraction between these two charges."
*January 25, 2008 by william*

**urgent urgent algebra**

find the composite function fog f(X) = 1/X-5,g(x)-6/x question 2 find inverse, domain range and asymatotes of each function f(x)=3+e^4-x can some one help me please been stuck on these for 2 days need help solving thank you
*March 19, 2013 by zachary*

**Calculus**

A curve is defined by the parametric equations: x = t2 – t and y = t3 – 3t Find the coordinates of the point(s) on the curve for which the normal to the curve is parallel to the y-axis. You must use calculus and clearly show your working, including any derivatives you need to ...
*July 18, 2014 by Daksh*

**problem solving**

what triangular region with p=100 has the most area? find all five triangular regions with p=100 having integer side and integer area . such as 29,29,42
*December 7, 2014 by kakak*

**Math**

I need help with this problem: If N= {1,2,3,4,....}, A= {x/x=2n-1, n E N}, B={x/x=2n, n E N}, and C= {x/x+2n +1, n=0, or n E N}, find the simplest possible expression for each of the following: a. A U C b. A U B - the U stands for union c. A (intersects) I can't find the ...
*September 17, 2006 by Avery*

**Math**

The question i'm having a problem with is the following: copy and complete: 3t-4 is a(n)_?expression and 5+13 is a(n)_? Expression. Do they mean a numerical expression?
*September 5, 2013 by Dylan*

**math**

can someone check my answer Graph by first solving for y. x + 2y = 8 x-x+2y=8-x 2y=8-x 2y/2=8/2-x y=4-x y=4-x/2 y=4-1/2x
*January 11, 2008 by amy*

**Math**

I need help on two problems. How would you go about solving: 1. 3(a-5) + 19= -2 2. -9 - 3(2q-1)= -18
*October 1, 2008 by Faye*

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