Wednesday

March 4, 2015

March 4, 2015

Number of results: 38,844

**math**

Submit the two equations that represent the cost of going to the gym based on if we join or do not join. Identify the number of times a person would go and have the costs of the 2 plans be the same.
*April 23, 2013 by Anonymous*

**math**

Submit the two equations that represent the cost of going to the gym based on if we join or do not join. Identify the number of times a person would go and have the costs of the 2 plans be the same.
*May 3, 2013 by bryant*

**math**

What is the length of the midsegment of the trapezoid made by the vertices A(0, 5), B(3, 3), C(5, -2) and D(-1, 2). Show equations and all work that leads to your answer. Answer Skip text editor options Collapse: Formatting Toolbar
*November 21, 2013 by shianne*

**Chemistry**

A sample of nitrogen occupies a volume of 300ml under a pressure of 380 torr at -177C. What would be the volume at STP? I know the answer is 430mL but I don't know which equations to use to formulate the calculation.
*May 1, 2014 by n*

**Mathematics : Arithmetic Sequence**

The 5th term and the 8th term of an arithmetic sequence are 18 and 27 respctively. a)Find the 1st term and the common difference of the arithmetic sequence. b)Find the general term of the arithmetic sequence.
*September 7, 2008 by Charmian*

**Math**

I have been asked to solve the following system of linear inequalities by graphing. I tried replacing with various numbers but even though the they work in the equations my graphs change from consistent to inconsistent. Please help.
*May 26, 2007 by Aman*

**physics**

determine the stopping distances for an auto0mobile with the initial speed of 90km/hand the human reaction time of 1.0s: (a) for an acceleration a= -40m/s^2; (b) for a = -8.0m/s^2 use one of newtons four equations to solve.... i dont get this at all...PLEASE HELP!!
*July 19, 2008 by marina*

**science**

Calculate the amount (volume) of 6.25% (wt./vol.) NaOCl solution (commercial bleach) required to oxidize 150 mg of 9-fluorenol to 9-fluorenone. Whenever appropriate, use balanced chemical equations as a part of your calculation. Any help is appreciatede.
*January 31, 2010 by Jander*

**Chemistry**

Calculate the average kinetic energy of the N2 molecules in a sample of N2 gas at 273K and 546K. I have been able to come up with the equation (KE)avg=3/2RT. I just want to know if R is equal to 0.08206 as it would be in other equations.
*July 11, 2010 by Victoria*

**organic chemistry--please help me!!!**

Give equations to show how sulfuric acid can convert 4-methylcyclohexene into a mixture of four isomeric c7H12 compounds(including starting material). Predict the relative amounts of each isomer.
*October 31, 2011 by Vivian*

**um reviewing old subjects .. Linear Equations**

Math.. and i dont understand this... plz go throw steps w me.. Like ex: 2 complementary angles a 24 degrees different. How much does each angle measure? Equation1: Equation: Method1: Method2:
*April 29, 2013 by Kennedy*

**Algebra2**

Help Solving This? 1.√3-x = 2-√x+1 2.2√n + 3 = n 5 Rational Exponet Equations: 1.3x^5/2 - 9 = 0 2.(2x+3)^1/4=4
*August 21, 2012 by Unknown*

**Algebra2**

Help Solving This? 1. √x+4 = √x-1+1 2.2√n + 3 = n 5 Rational Exponet Equations: 1.3x^5/2 - 9 = 0 2.(2x+3)^1/4=4
*August 22, 2012 by Victor*

**math help**

5) Consider the equations: f(X)= -6x-1 and g(x)=4x^2 Select the solution for (f+g)(x). a) -6x -1 + 4x^2 b) -24x^3 - 4x^2 c) -24x^2 - 1 d) -6x - 1- 24x^2
*March 31, 2013 by Anonymous*

**physics**

Madhuri throws a stone the stone is thrown horizontally at 33.9 m/s from the top of a 297.9m cliff. 1.How high is the stone after 3.35 sec? 2.What is the range? equations to find please.
*October 5, 2010 by Bansnoob*

**math-calculus**

solving equations with two absolute value brackets |x+4| = |x-2| so i want to know how to do this? do i always have to write out the four piecewise possibilities? that be ++ -+ and +- ++ x+4 = x-2 4 = -2 not solution -+ -(x+4) = x-2 -x-4 = x-2 -4 = 2x-2 -1 = x solution +- x+4...
*January 18, 2012 by Shreya*

**maths- commercial mathematics(value added tax)**

A shopkeeper sells an article at the listed price of Rs.1500 and the rate of value added tax is 12% at every stage of sale. If the shopkeeper pays a Value added tax of Rs. 36 to the Government, what was the price, inclusive of Tax, at which the shopkeeper purchased the article...
*March 7, 2013 by anoynomous*

**Algebra/Pre-calculus (Quadratic Equations)**

A theatre company allows a group of 10 people to buy theatre tickets at a price of $28 per person. For each person in excess of 10, the price is decreased by $2 per person for everyone down to a minimum of $10 per person. What number of people will produce the maximum revenue ...
*October 17, 2014 by Mathgirl730*

**Algebra**

How do you know which rule to use when it doesn't specify? All it says is find the derivative of the function. I haven't had algebra/calculus in over 20 years, I'm completely lost. Please help
*February 19, 2015 by Averi*

**for Drbob222**

thanks but i do need help to solve the third part also, I did get these equations but don't know how to put them together to solve the third. thanks for helping further!
*October 29, 2007 by Gavin*

**simple equations ( math)**

Divide 300 cards between Ann and Elizabeth so that Ann has 5 times as many as Elizebeth's cards
*January 10, 2010 by vanessa*

**banyan elementary**

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

**Chemistry**

17. You have the following equations: 2S (s) + 3O2 (g) 2SO3 (g), H = 792 kJ 2S (s) + 2O2 (g) 2SO2 (g), H = ? 2SO2 (g) + O2 (g) 2SO3 (g), H = 198 kJ What is the missing H?
*April 10, 2012 by JoJo*

**Differential Equations**

solve using variation of parameters: y"+36y=[csc(6t)]^2 I don't understand variation of parameters very well at all.
*April 24, 2012 by Rosy*

**Physics(Please check)**

Which equations are dimensionally correct? F=ma E=max X=(1/2)at^3 V=sqrt(2*fx/m) E=(1/2)mv I think that F=ma , E=(1/2)at^3, V=sqrt(2*fx/m) are correct. Would you agree?
*May 21, 2012 by Hannah*

**precalculus**

Find all solutions of the system of equations. Order your answers from smallest to largest x, then from smallest to largest y.) x^2 + y2= 53 x2− y2= 3
*December 1, 2012 by amaa*

**Math**

38. Tell whether the lines for the pair of equations are parallel, perpendicular, or neither. y = –2/3x + 1 2x – 3y = –3 A.)Parallel B.)Perpendicular C.)Niether I think it is C.
*December 17, 2012 by Deborah*

**math**

Brent has #3.35 in quarters and dimes. He has 23 coins in all. How many quarters and dimes does he have? Write a system of equations to solve
*February 11, 2013 by Brenna*

**AP Calculus BC**

A curtate cycloid is defined by the equations x = 2t - sin t and y = t - cos t. If I walk along the cycloid, how far will I walk in 10 seconds?
*February 26, 2013 by Marcia*

**math**

a,b and c are positive integers such that the simultaneous equations (a−2b)x=1, (b−2c)x=1 and x+25=c have a positive solution for x. What is the minimum value of a?
*April 24, 2013 by ayan*

**Math**

When solving a system of equations, how do you determine which method to use? Like how can you determine when to use Elimination, Substitution or Graphing???
*December 14, 2013 by Gabby*

**Calculus Help Please!!! **

--- Find the slope m of the tangent to the curve y = 4 + 4x^2 − 2x^3 at the point where x = a. ---- Find equations of the tangent lines at the points (1,6) and (2,4). (1,6) Y(x)= (2,4) Y(x)=
*March 7, 2014 by Kesha *

**Pre-Calculus/Trigonometry**

give an example of an arithmetic sequence also give an example of a system of equations with no solutions
*September 29, 2014 by Anonymous*

**Math-Linear Equations**

True or false? A line perpendicular to a line whose slope is -0.75 has a slope of 1.3 repeating. Please help me with this.Thank you
*January 2, 2015 by Cherie*

**Algebra II**

I first want to make it clear that I have only taken Geometry, Algebra I, and pre-Algebra. That seemed to clear things up last time. Question: Matt bought a car at the cost of 25,000 dollars. This car's value goes down 15% every year. 1. What is the decay factor? 2. Write the ...
*March 17, 2011 by Anon*

**simple equations ( math)**

Mary has $38 and Jane has $12. How much must Mary give Jane so that they both have the same amount>?
*January 10, 2010 by vanessa*

**Math**

Use elimination to solve each system of equations. x+y-2z=10 8x-9y-z=5 3x+4y+2z=-10 I need to figure out what x,y, and z each equal. I must use the elimination method.
*January 11, 2010 by Karli *

**Chemistry**

Balance each of the following skeleton equations. This is the last one left to balance. D) C4H10 + O2 -> CO2 + H2O = C4H10 + O2 -> 4CO2 + 10H
*July 11, 2010 by Derrick*

**computer science**

. Investigate the values of and such that the system of equations x + y + z = 6 x + 2y + 3z = 10 x + 2y + z = , may have (i) Unique solution
*November 16, 2010 by sonia*

**math**

How would you set up a system of linear equations to find out how many packages of 8 and 12 you would have to buy to have no left?
*January 11, 2011 by Chuck*

**Math: Linear Equations**

What is "3x=9" in y=mx+b form, and what is its slope, y-intercept, and x-intercept? [i think that its x-intercept is (3,0), but i'm not sure about any of the others] Also, what is the x-intercept of "2y+16=0"? [is it "none"?]
*December 15, 2011 by Cicilia*

**Math: Linear Equations**

What is "3x=9" in y=mx+b form, and what is its slope, y-intercept, and x-intercept? [i think that its x-intercept is (3,0), but i'm not sure about any of the others] Also, what is the x-intercept of "2y+16=0"? [is it "none"?]
*December 15, 2011 by Cicilia*

**finite math**

Determine whether each system of linear equations has a)one and only one solution, b)infinitely many solutions, or c) no solution 2x-4y=5 3x +2y=6
*April 3, 2012 by bob*

**Chemisty**

Write all possible quilibrium equations for KHP dissovled in water and then write the quilibrium constanst expressions for the equation.
*May 9, 2012 by Brooke*

**College Math**

Using EZgraph, graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph. 3. 4.9x – 7.2y = 2.3 4. 2x = -8 5. 3.7x + 4.2y = 5.03
*October 19, 2012 by Richard D*

**Chemis**

Write a blanaced molecular equation for the reaction 2Na(NO3) + Cu(OH)2. Write complete ionic and net ionic equations?
*October 29, 2012 by alexis*

**Chemistry**

Write a blanaced molecular equation for the reaction 2Na(NO3) + Cu(OH)2. Write complete ionic and net ionic equations?
*October 29, 2012 by alexis*

**AP Calculus**

Two circles of radius 4 are tangent to the graph of y^2=4x at the point (1,2). Find equations of these two circles. I found the derivative of y^2=4x, but i don't know what to do next!
*September 11, 2013 by Sarah*

**Math**

Solve the following equations for the variable indicated. Please correct me if I'm wrong! 1. I=Prt for P Answer: I/P=rt 2. Solve C= 2ðr for r. Answer: C/r=2ð
*August 31, 2014 by Anonymous*

**math,help**

How do even solve this one sum of two numbers is 32. their difference is 6. what are the numbers? x-y=6 x+y=32 add the equations... 2x=38 and solve.
*February 10, 2007 by jasmine20*

**math ,correction**

Solve each of the following equations for x. Problem#3 (5)/(x+6) + (2)/(x^2+7x+6) = (3)/(x+1) My answer is: x = 5 Problem #4 (2)/(5)= (x-2)/(20) My answer is: 10=x whoa. good luck. =0
*March 7, 2007 by jas20*

**Exponential Equations**

HOw would you solve this equation 5^x+6=4 Correct me if I'm wrong so far.. x+6 ln5=4 Divide by x+6..which would be ln5=4/x+6...then what??
*May 1, 2009 by Amber*

**simple equations ( math)**

Tom's weight is 3/4 of Peter's. If Tom weighs 36kg, find the weight of Peters
*January 10, 2010 by vanessa*

**simple equations ( math)**

Share $100 between Joseph and Peter so that Joseph has 3 times as much as Peter.
*January 10, 2010 by vanessa*

**physics**

Using dimensional analysis, which one of the following equations is dimensionally correct? ( a → m/s2, v → m/s, x → m , t → s)
*September 17, 2010 by Kelly*

**acc. alg 2**

exponentiating to solve equations: solve the eaquation, cheack for extraneous solutions log5(x+4)+log5(x+1)=2
*March 20, 2011 by Kayla*

**Calculus**

Find the turning points of y = 3 x 3 + 6 x 2 + 3 x – 1 and determine their nature, also, find the equations of the tangents at these points. please help me
*December 25, 2011 by Noor *

**Calculus**

Let f(x)= (3x^2-2x+1)/(x-1). What are the types of asymptotes of f(x)? What are the equations of all the asymptotes of f(x)? The types of asymptote are vertical and oblique? x=1? Is there something wrong I did
*February 28, 2012 by Jake*

**college math**

system of equations: solve the following system of operations using matrices (row operations) {5x + y + z + w = -5} {x - 2y + 2z -3w = -4}
*September 14, 2013 by Cece*

**Alegbra**

The sum of two numbers is 30 and their difference is 2. Find the two numbers by writing and solving a system of equations.
*February 27, 2014 by KevinJ*

**chemistry**

Write equations for the ionisation in water of : A) hydrobromic acid B) nitrous acid C) carbonic acid D) sulfuric acid
*May 11, 2014 by Haiano*

**mathematics**

Find the smallest prime number N such that the following is true: The largest prime factor of N−1 is A; The largest prime factor of A−1 is B; The largest prime factor of B−1 is 7.
*April 21, 2013 by Sambaran G.*

**mathematics**

The probability of choosing a 6 at random from a standard deck of playing cars is 1/13.Use this information for 1 and 3. 1. what is the complement of the event of choosing a 6 ? 2. What is the probability of the complement of the event of choosing a 6 ? 3. You roll a standard ...
*April 24, 2014 by thomas *

**Math 116**

Okay so now I am working on the substitiution portion of this assignment and I understand the first part by not the second can someone help? Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city. a) ...
*March 22, 2010 by KiKi*

**Mathematics, Math**

During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was $56, find its price after the shortage was over. Would it have been ...
*February 28, 2012 by Kaela*

**Mathematics, Math**

During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was $56, find its price after the shortage was over. Would it have been ...
*February 28, 2012 by Kaela*

**Mathematics**

Michelle rode her bicycle from her house to her school at an average speed of 8 miles per hour (mph). Later that day, she rode from school back home along the same route, at an average speed of 12 mph. If the round trip took her 1 hour, how many miles long is the round trip.
*August 30, 2007 by Ryomasa*

**mathematics**

The numbers 1,2,…,17 are divided into 5 disjoint sets. One set has 5 elements, one set has 4 elements, two sets have 3 elements and the last set contains the 2 remaining elements. Two players each choose a number from 1 to 17 at random. The probability they choose numbers from...
*February 6, 2013 by Anonymous1*

**to annonymus can you help me with math**

How do i solve inequalitites with three variables. I still can't figure it outplease help. x+y=1 y-z=-3 2x+3y+z=1 the answers are 3,-2,1 how do get there by solving linear equations with three variables. 5x-2y-z=2 -y+2z=11 x+y+z=-3
*October 22, 2006 by Jasmine202005*

**Chemistry**

Can someone tell me when I add charges to my balancing equations? I know that you add charges when dealing ionic compounds (metal and nonmental), but what else? Acid?
*February 4, 2009 by Chopsticks*

**5th grade**

Will someone tell me a webpage my daughter can get help on solving equations, word problems w/ algebraic chains...or for 5th grade math. Thank you
*September 10, 2009 by margaret*

**diffrential equations**

Find two linearly independent power series solutions to the diffrential equation. State the first 3 therms of each series: 2x^2y''+xy'-(1+2x^2)y=0
*July 28, 2010 by Jay*

**Pure math**

1.Using your calculator,solve 4 ø in each of de 4lowing equations correct 2 1 decimal place,and with de restriction that 0 degree lessthanequals ø lessthanequals 90 degree
*October 25, 2010 by Dirang*

**Pure math**

1.Using your calculator,solve 4 ø in each of de 4lowing equations correct 2 1 decimal place,and with de restriction that 0 degree lessthanequals ø lessthanequals 90 degree
*October 25, 2010 by Dirang*

**math 8**

Martin graphed the lines for a system of equations. His graph resulted in 2 lines with different slopes. Which of the following is true about this graph?
*July 1, 2011 by rober*

**calculus**

Two lines through the point(1,-3) are tangent to the curve y=x2. Find the equations of these two lines and make a sketch to verify your results. Thank you
*September 27, 2011 by Akanimo*

**Precalc**

use completing the square to describe the graph of each function. How do you complete the square with this equations. please show me step by step so that I can understand it. x^2-4x+6
*October 27, 2011 by Amy*

**Chemistry **

Use the equations with the enthalpy information given below to calculate the ÄH° for the reaction: S(s) + O2(g) --> SO2(g) S(s) + 3/2 O2(g) --> SO3(g) ÄH° = -395kJ 2 SO2(g) + O2(g) --> 2 SO3(g) ÄH° = -198.2 kJ
*November 14, 2011 by Anonymous*

**calculus**

Find Mx, My, and (x, y) for the laminas of uniform density ρ bounded by the graphs of the equations. (Use rho for ρ as necessary.) x = −y x = 5y − y2
*January 26, 2012 by sammyg*

**Math**

Lee has 35 dimes and quarters that total $5.00. Solve the system of equations to find how many dimes and how many quarters he has. d+q=35 0.1d+0.25q=5 Please show your work thanks
*February 25, 2012 by Sadie*

**8th grade math**

How do you turn these equation into a standard form? this is the standard form: ax+by=c here are the following equations: 2x = y + 1/2 y - 2 = 1/4x + 1 3y + 3 = 6x - 15 Please help and explain. Thank you.
*March 4, 2012 by saranghae12*

**science**

Zinc chloride solution is poured into a solution of ammonium carbonate. need conventional, ionic and net ionic equations thanks
*March 12, 2013 by Danny*

**precalc **

There is a line with two rectangular pt (3, 4)&(6,-3)write this line as a pair of parametric equations then show how you can eliminate the paparameter to return to rectangular form
*April 26, 2013 by brady*

**math**

Jenny wanted to solve the quadratic equation x2 - 11x +18 = 0 by factoring. Which of the following equations would lead her to solve the given equation?
*August 30, 2014 by cam*

**chemistry-chemical equations**

How do I write the balanced chemical equation for Copper +nitric acid -> copper(II)nitrate+ nitrogen dioxide + water
*November 30, 2014 by Anonymous*

**Science**

Is this equation balanced or unbalanced? H3PO4 and H4P2O7+H2) The first equation has 3 Hydrogen, 1 Phosphorus, and 4 Oxygen. HOw do you find the second equations Oxygen?
*January 8, 2015 by M*

**Straight Lines**

how to find the equations of the lines if the equation of their angle bisectors are given and one of the line passes through a given point?
*January 25, 2015 by Shanu*

**Mathematics**

Carletta has $10,000 to invest. As her financial consultant you recommend that she invest in Treasury Bills that yield 6%, Treasury Bonds that yield 7%, and coroporate bonds that yield 8%. Carletta wants to have an annual income of $680, and the amount invested in corporate ...
*September 23, 2008 by Kevin*

**Chem Help!**

I really need help for my homework on balancing equations please show all the work including the coeffients if needed. I need help with 3 questions, 1) NaN3 -> Na + N2 2) NO2 + O2 -> NO + 03 3) LiOH + CO2 -> Li2CO3 + H2O
*March 15, 2008 by Tania*

**physics**

if the angular quantities theta omega and angular acceleration were specified in terms of degrees rather than radians how would the kinematics equations for uniformly accelerated rotational motion have to be altered
*February 28, 2011 by luna*

**Calculus**

I'm a bit confused about the average equations with integration. I need to solve this problem, and I think I'm supposed to use substitution, but I can't get it to work. The problem looks like this: z(t)=4tsin(t^2), [0,π^1/2] Any input?
*February 27, 2011 by Rachel*

**physics**

if the angular quantities theta omega and angular acceleration were specified in terms of degrees rather than radians how would the kinematics equations for uniformly accelerated rotational motion have to be altered
*February 28, 2011 by luna*

**MATH**

you purchase 8 video game machines for a total of $2722. A nintendo costs $249 and an Xbox costs $395. How many nintendos and how many xboxes did you buy? What 2 equations do I write and how do i solve it? (elimination substituation etc.)
*June 7, 2011 by HAILS*

**math **

This week’s focus is on systems of equations. Describe a profession that might use this on a regular basis, and give an example with a solution (not covered in the text) of a math problem with a real-life application.
*February 10, 2012 by Leo*

**Physics**

A particle is acted upon two forces given by the vector equations, F1=1.5i-0.7j and F2=-3.1i+3.6j, with values measured in Newtons(N). Calculate the resultant force, in N, acting on the particle, giving your answer to 3 dec places.
*March 5, 2012 by Annoymous*

**Math**

The perimeter of a pool table is about 7.8m. Four times the length equals nine times the width. What are the dimensions? I need to find 2 equations first. I got 2l + 2w= 7.8 I cant seem to get the other one
*September 16, 2012 by Vanessa*

**accounting**

in order for companies to prepare and issue financial staements, their accounting equations (debit and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement.
*October 15, 2012 by mya*

**accounting**

in order for companies to prepare and issue financial staements, their accounting equations (debit and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement.
*October 15, 2012 by mya*

**accounting**

•In order for companies to prepare and issue financial statements, their accounting equations (debits and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement
*October 15, 2012 by mya*

**Differential Calc**

If: 0 = f(1) = a+b+c+d 2 = f(-2) = -8a+4b-2c+d 0 = f'(1) = 3a+2b+c 0 = f'(-2) = 12a-4b+c "since we now have four equations and four unknowns, we can determine unique solution. Solving for "a" and "b", a=, b=" Please show the steps, I am so confused and no one knows how to do ...
*November 5, 2012 by Joey*

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