Wednesday
March 4, 2015

Search: mathematics: algebra;equations

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= 2r for r. Answer: C/r=2
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 in each of de 4lowing equations correct 2 1 decimal place,and with de restriction that 0 degree lessthanequals lessthanequals 90 degree
October 25, 2010 by Dirang

Pure math
1.Using your calculator,solve 4 in each of de 4lowing equations correct 2 1 decimal place,and with de restriction that 0 degree lessthanequals 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 H for the reaction: S(s) + O2(g) --> SO2(g) S(s) + 3/2 O2(g) --> SO3(g) H = -395kJ 2 SO2(g) + O2(g) --> 2 SO3(g) H = -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 weeks 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

Pages: <<Prev | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | Next>>

Members