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July 1, 2016

Search: mathematics: algebra;equations

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Algebra1!Plz help I have test 2morrow!!!
so would the new eqaution be... 2x+8=10 then.. 2x=2 x=1? We know that y = x + 8. So if x + y = 10, then x + x + 8 = 10. but what about the y?ANd what do I do afetr that? If you know what x equals, then you can calculate what y equals. Once you've solved for x and y, you are ...
November 4, 2006 by Sammy

Help help help!!!!!!!!!
Simplify 18. -(-4)+3= Solve equations of the form x+a=b solve 26. 6.3=t+2.9 30. -8=14+(d+-6) 32. 312.9+163.4+b 34. - 11/5+w=-4/5 Thank You very much!!!
December 9, 2007 by Alex

PreCalc
How do I verify that the following equations is an identity: 1+ sec x sin x tan x = sec^2 x
July 30, 2008 by Glen

PreCalculas
How do I verify that the following equations is an identity: 1+ sec x sin x tan x = sec^2 x
July 30, 2008 by Glen

QUADRATIC EQUATIONS
How do i solve this, by factorizing... 4x(squared)-196=0 Example: 3x(squared)-12=0 (3x+6)(x-2) THNX
October 15, 2008 by Sam

alegbra
Need help with this problem 8x-5y=20 5y-8x=-20 Please help me with this problem Solve the system of equations by graphing.
April 5, 2009 by jspurlock

intro. to chemical equations
Al2(SO4)3 does the 3 apply to everything or just the SO4. thank you.
May 31, 2009 by Geff

math
Are all linear equations functions? Is there an instance in which a linear equation is not a function?
June 2, 2009 by scooby9132002

Math logs
Solve the system of equations: y= (lnx)^2 + 2 (lnx^2) y = 3ln(1/x^2)+24 Im not sure what to do..
October 14, 2009 by Mike

Geometry
Triangle ABC has vertices A = (0,6) B = (-2,3), and C = (2,1). Find the coordinates of its vertices if it is translated by the equations: x' = x - 4, y' = y -3
December 4, 2009 by Lenora

math
6x-4y=20 and 4y-6x=-20 What is the solution of the system of equations for this problem? A)A point B)No solution C)Infinitely many solutions
March 27, 2010 by KiKi

Vectors
Given each scalar equation, write a vector equation and the parametric equations. 8x + 9y = -45
June 5, 2010 by Anonymous

math
Solve the following system of equations x + 4y=6 x= 4-4y A. The solution is an ordered pair ( , ) B. No Solution
July 9, 2010 by christy

math
how do you find all real and non real solutions to these type of equations?: (x+3)^2 - 81=0 (x+1)(x-2)=18 THANKS!
August 22, 2010 by Alex

calculas
Find the equations for the tangent line and normal line to the curve for f(x)=(x^4)+(2e^x) at the point (0,2)?
September 28, 2010 by john

math
I need help on this math problem Solve the systems of equations by elimination. -2x+y=7 6x+12y=24
February 6, 2011 by pdub

science/chemistry
what does these equations mean metal+water=metal hydroxide+hydrogen
February 16, 2011 by chloe

chemistry
Write molecular, ionic, and net ionic equations. AgNO3(aq) + KBr(aq) -->
June 20, 2011 by Brea

chemistry
what is the balanced molecular, total ionic, and net ionic equations for HC2H3O2 + Mg(OH)2 ??
June 27, 2011 by chelsea

Math-System of Equations
1. Solve for x, y, z in the following system: 2x-3y-2=z y-x+z=1 -y-2z=7 The answers are: x=-7 y=-5 and z=-1 however I don't know how to go about this.
November 3, 2011 by Lilly

Polar equations
write 3x-6y=-14 in polar form. round phi to the nearest degree
April 20, 2012 by Please Help Me!

math
Solving Equations with Fractions 1/2 x - 1/3 x = 7/3 solve for X i need help step by step process anyone?
July 12, 2012 by nain

calculus
Find parametric equations for the line that is perpendicular to the plane 2x-y+3z=7 and intersects the plane when x=1 and y=1.
January 15, 2013 by Zac

calculus
Find the parametric equations for the line that contains the point (3,1,-4) and is parallel to the line r(t)=(1+2t)i+(-3-t)j+(5+5t)k
January 15, 2013 by Zac

math
Identify the solution(s) of the system of equations, if any. -2x-4y=1 12y=-6x-3 a) no solution b) (0,-1) c) (-1,0) d) infinitely many solutions
January 27, 2013 by monet

Chemistry
why is it important that the equations be balanced when performing mass-mass stoichiometry problems?
March 18, 2013 by Lindt

Pre-Calc/Calc
Which set of parametric equations corresponds to this rectangular equation? y=2x-(x^2 / 10) A. x=4t, y=4t-(t^2 /10) B. x=2t, y=8t-(4t^2/10) C. x=2t, y=4t-(4t^2/10) D. x=.5t, y=2t-(t^2/10) E. x=t, y=t-(t^2/10)
April 17, 2013 by Chris Math Hw Help

Math 116
identify the solution (s) of the system of equations, if any. -3x-4y=2 8y=-6x-4 a. infinitely many solutions b. (-16/9, 5/6) c.(-2/3,0) d. no solution
June 21, 2013 by Queta

math calculus
convert these symmetric equations to parametric form: line 1:(x-1)/k = (y-2)/2 = (z+1)/k-1 and line 2: (x+3)/-2 = (z)/1, y=-1
November 29, 2014 by Sarah

Math
Solve the following systems of equations: -2x+y=1 -4x+y=-1 (3,1) (-1,3) (-1,-3) (1,3) Could someone please help. I'm confused on how to solve this. Thank you!
December 3, 2015 by Mason

Math
Explain how to solve the following system of equations. What is the solution to the new system? 2x + 2y + z = -5 3x + 4y + 2z = 0 x + 3y + 2c = 1
January 29, 2016 by RedRov3R

Math
Parametric Equations x = 9s^2 - 1 y = 1 - 8s^3 find dy/dx in terms of s find the coordinates of stationary points
February 28, 2016 by Tony

Algebra-Please Help!!!
You are selling rings for $7 dollars each. You have been contacted by a customer in Alaska who wants to purchase several of these rings and wants you to ship them to her. Its only going to cost you $5 to ship these items to Alaska. Suppose another company sells the same item ...
May 17, 2016 by Scarlet

Math
use linear combinations to solve the system of linear equations. 2x+y=4 x-y=2
February 6, 2008 by Crystal

mat
Is their a free online calculator to graph linear equations? How do you graph x=y+3
April 21, 2009 by Bryan

Algerbra1
Use elimination to solve each system of equations: s-t=4 over s+t=2; -4x+2y=8 over 4x-3y=-10
October 21, 2009 by Tyrone

maths
the easiest method for simutanious equations using subsitution method is??
October 22, 2009 by salman

Quadratic Equations
If I were looking at a graph of a quadratic equation, how do I determine where the solutions are?
September 2, 2010 by Lynn

geometry
how can you tell in geometry that the equations are parallel, perpendicular , neither, either?
September 25, 2010 by 14

Math
Use linear combinations to solve the system of linear equations. 5x=4y-30 2x+3y+-12
January 18, 2011 by Sarah

differential equations
solve the differential equation by seperation of variables 5. y'=xy/2ln y
March 17, 2011 by cathy

math linear equations
how do u make a linear equation from a data table??
May 9, 2011 by bob

chemistry
Write molecular, ionic, and net ionic equations. HIO2(aq) + Ba(OH)2(aq) -->
June 20, 2011 by Brea

chemistry
Write molecular, ionic, and net ionic equations. HIO2(aq) + Ba(OH)2(aq) -->
June 20, 2011 by Brea

Trigonometry
Solve the equations secΘ - 1 = (√2 - 1)tanΘ
December 24, 2011 by Kewal

math
Identify the solution(s) of the system of equations, if any. -3x -4y = 2 8y = -6x 4 a) infinitely many solutions b) (-16/9, 5/6) c) (-2/3, 0) d) no solution
January 27, 2013 by monet

math
Identify the solution(s) of the system of equations, if any. x=1 y=1 a) no solutions b) (0,0) c) (1,1) d) infinitely many solutions
January 30, 2013 by monet

MATH
Identify the solution(s) of the system of equations, if any. x=1 y=1 a) no solutions b) (0,0) c) (1,1) d) infinitely many solutions
January 31, 2013 by Anonymous

maths
The variables x and y satisfy the equations 2/x−24/y=−1 and 6/x+33/y=2. Find the product xy.
February 13, 2013 by Rox

math
(Math+lice)+ (equations+R+P- Square)= Decimal_______ I don't have a clue How to do this
May 2, 2013 by Hanah

math
Identify the solution(s) of the system of equations, if any. -4x - 4y = 4 4y = -4x - 4 A) no solution B) (0, -1) C) (-1, 0) D) infinitely many solutions
October 20, 2013 by sam

Math 6
Identify the solution(s) of the system of equations, if any. -3x-4y=2 8y=-6x-4 A) infinitely many solutions B) (-16/9, 5/6) C) (-2/3, 0) D) no solution
October 20, 2013 by sam

math
Identify the solutions of the systems of equations, if any. -4x-4y=8 4y=-4x-8 No solution (0,-2) (-2,0) Infinitely many solutions
September 2, 2014 by amber

maths
Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Solve for a
September 12, 2014 by segzy

Math
Explain how to solve the following system of equations. What is the solution to the system? 2x+2y+z=-5 3x+4y+2z=0 x+3y+2z=1
January 21, 2015 by Veronica

math - linear equation
How do I write a system of equations that is linear and graph? Thanks
March 31, 2015 by hy

math
Solve the set of linear equations by the matrix method : a+3b+2c=3 , 2a-b-3c= -8, 5a+2b+c=9. Solve for a
April 2, 2015 by azeez

Math
how would I solve this on a graph? -3x-2y=18 and 3x-y=0 how would my equations look? y=-9+-3/2x y=0+3x correct?????
November 12, 2015 by Alea

math: pre-calculus
Solve the equations. Log(6x-1) = Log(x+1) + log4
May 8, 2016 by Nicky

Algebra
I am having a problem with solving a composite function in Algebra 1 How do I solve f(x) = -2x + 1 and g(x) = 4x? Don't I need more info? No, that is all you need. I it unclear what you want to do here. see http://library.thinkquest.org/C0110248/algebra/functions_c.htm
July 18, 2007 by Alec

Mathematics - Trigonometric
An electric motor turns at 2400 revolutions per minute or 2400 r/m. Find the angular velocity, in radians per second, in exact form and in approximate form, to the nearest hundredth. -------- This is what I've done so far and I don't know what to do next ... 2400 r/m divided ...
November 5, 2007 by Anonymous

mathematics
A mortgage is taken out of 100000 dollars and is repaid by annual instalments of 20000 dollars. Interest is charged on the outstanding debt at 10 percent annually. If the first repayment is made one year after the mortgage is taken out, find the number of years it takes for ...
January 28, 2016 by stephen

Physics
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 200 N applied to its edge causes the wheel to have an angular acceleration of 1.048 rad/s2. (a) What is the moment of ...
October 28, 2014 by Brittany

Statistics
At a certain university, 50% of all entering freshmen planned to major in a STEM (science, technology, engineering, mathematics) discipline. A sample of 36 freshmen is selected. What is the probability that the proportion of freshmen in the sample is between 0.475 and 0.580? ...
October 18, 2015 by Obi

math/algebrall
solve the system of equations:4x - 3y equals 14 and y equals -3x plus 4 i think its either 1(4,10) (2,2)
August 13, 2008 by Anonymous,

calculus
Find equations of the tangent line and normal line to the curve at the given point. y = x^4 + 2e^x, (0,2)
October 14, 2008 by Vishnu

8th Grade Math
How do you solve this equations? (xy^-3)^-5 (3x^4)(4x^12) ab^-6 ______ c^0d^-4 x^3y^0(z^-4) Can you please show it step by step? Thanks.
September 26, 2009 by Kendall

math
Select any two integers between -12 and +12 which will become solutions to a system of two equations.
November 15, 2009 by staci mae

Math
Is there a difference between solving a system of equations by the algebraic method and the graphical method? Why or why not?
March 10, 2010 by Craig

math
please can you help me solve the following equations and please can you show your method. thanks 1) 4x+3/5x-6 = x-1/x-6 2) 4x-5/1-6x = x+10/x-6 thanks once again
October 30, 2010 by peter

chemistry
What is the molecular, ionic, and net ionic equations for Copper(II) sulfate + sodium phosphate?
November 3, 2010 by Stacy

Math
Use the echelon Method to solve the system of three equations in three unknowns. 2x+y+z=9 -x-y+z=1 3x-y+z=9
November 6, 2010 by Erin

math
PLEASE!!!!i need help on these 4: *4y=15-3x 2y=3x+21 *4x=5y-14 y=-6x-9 *5x=4y-30 2x=3y=-12 *2/3y=10+4x 5x=1/3y-8 use linear combinations to solve the system of linear equations thank you!!!
January 24, 2011 by HELP me please asap!!

math
PLEASE!!!!i need help on these 4: *4y=15-3x 2y=3x+21 *4x=5y-14 y=-6x-9 *5x=4y-30 2x=3y=-12 *2/3y=10+4x 5x=1/3y-8 use linear combinations to solve the system of linear equations thank you!!!
January 24, 2011 by HELP me please asap!!

need alot of help please math
hello i need help with system of equations theres 3 only thank you 2x+3y-17 3x+y=31 2(x-3y)=24 y=3x-2 2(x+4)=24 x+y=17
April 18, 2011 by hannia

trig
The parametric equations for a curve in the x-y plane are x=2+t^2 and y=4-3t. Determine the points where the curve intersects the x-axis.
April 19, 2011 by casey

Chem
Balancing equations? NaOH + H3PO4 ----> Na3PO4 + H2O C3H8 + O2 ----> CO2 + H2O
April 26, 2011 by Laura

Science (Chemistry)
The Average density of Earth is 5.52g/cm^3. What is its density in a. kg/m^3 b. lb/ft^3. Please help me set up these equations. Thank you!
June 13, 2011 by Grace

math
Solve each system of linear equations by both graphical and algebraic line 1 x+2y=4 line 2 x-y=0
August 21, 2011 by Abel

Differential Equations
Solve the seperable differential equation for U. du/dt = e^(5u+7t) - Using the following initial condition U(0) = 12
August 27, 2011 by Kody

4th grade math help
Explain how the variable B has two different values in the two equations 6 - B = 5 b = 1 B + 5 = 15. B = 10 Thanks!
October 25, 2011 by Zack

geometry
x is less than y and 20 less than z. write a system of equations and find the measures of the three angles
November 7, 2011 by davonte

Polar equations
write the polar eqaution 3 = r cos (theta - 315) in rectangular form.
April 20, 2012 by tabby

Chemistry 132
What is the net ionic equations for Ca Cl2 + Na2 CO3=Ca CO3 + 2Na Cl
February 25, 2013 by Anonymous

Math 116
Identify the solution(s) of the system of equations, if any. -6x-2y=12 4y=-12x-24 a. no solution b. (0,-2) c.(-2,0) d.infinitely many solutions
June 21, 2013 by Queta

maths
Prove that if p and q are rational and p is not equal to 0, the roots of the quadratic equations p x(square) + 2qx -p +2q = 0 are rational.
August 9, 2013 by Jayden Haddy

Maths
Consider the line defined by the parametric equations x=3d-10, y=2d+1. The y-intercept of this line can be expressed as a/b. Find a and b.
October 27, 2013 by CHRIS

Have I done this right
write the equations in logarithmic form 216 = ^63 answer In(e^4.5) 49 = (1/7) ^-2 answer 2=log(3x)
May 13, 2014 by Nellie

algerbra
Identify the solution(s) of the system of equations, if any. -4x - 4y = 4 12y = -12x - 12 no solution (0, -1) (-1, 0) infinitely many solutions
September 8, 2014 by robert

math,help
on one of last week homeworks i got this one wrong can someone explain to me what is the correct format. The demand supply equations for a certain item are given by: D= -5p+40 S=-p^2+30p-8 The correct answer was: $1.43 how do you get to this answer because i've tried it and it...
April 19, 2007 by jasmine20

College Mathematics
Guys, could you please help me with this problem? I'm a bit lost. Consider a population that begins growing exponentially at a rate of 5% per year and then follows a logistic growth pattern. If the carrying capacity is 100 million, find the actual growth rate when the ...
August 8, 2008 by Miguel

College Mathematics
You are paid a modest retainer of $325 to be on call for one week each month. Your hourly pay rate is $18. You are scheduled to work 38 hours the week you are on retainer. Your employer is required to deduct a total of 22% from your pay. a) What do you expect to earn in your ...
September 7, 2010 by Carmen

mathematics
The members of a high school basketball team are driving from calgary to vancouver,which is a distance of 675km.Each tire of their van has a radius of 32cm.If the team members drive at constant speed and cover the distance in 6h 45 min,what is the angular velocity,in radians/...
November 12, 2013 by rahul

Math
The traditional method of determining the human age equivalent of a dog is to multiply its age by 7 years. The method we used in this project was to use equations based on scientific data to determine the human age of dogs. In my opinion, the ____________method (equations or ...
March 9, 2016 by Anonymous (Help ASAP)

Mathematics
What are consecutive numbers? -The sum of TWO consecutive whole numbers is 99. What are they? -The sum of THREE consecutive whole numbers is 99. What are they? Can someone please show me if there is working out? (if needed)
April 30, 2011 by Crissy XD

mathematics important very important
a group of people were asked to choose there favourite fruits.1/4 choose apple,1/3 banana and 2/5 orange and 3 people choose grapes. How many people were there in the group.
July 20, 2014 by cbse 8th

Algebra (check answers)
Could you please check my answers we are using substitution to solve each system of equations. And at the end of every solution you are supposed to have an answer as a coordinate. 1. x=2y x+y=3 Answer (1,2) 2. 2y=3 x-y=10 Answer: (10,10) 3. y=x+7 x+2y= -21 Answer: (-3,-4) 4. ...
April 27, 2009 by Stacie

mathematics
A car braked with a constant deceleration of 45ft/s^2 producing skid marks measuring 55 ft before coming to a stop. How fast was the car traveling when the brakes were first applied? Please round the answer to the nearest hundredth. Vo= ft/s Vintial^2 - Vfinal^2= -2*...
April 14, 2007 by Julia

mathematics
seeds of type A and type B are sold in packets, each must contain 1) both type a and type b seeds 2) at least twice the amount of type B as there are type A 3) no more than 12 seeds state the minimum number in each paket of type A and of type B if here are x tye A and y Type B...
February 25, 2008 by keisha

Mathematics Ms Sue help
A high pass filter with a cutoff frequency of 250 kHz is placed in a circuit after a low pass filter with a cutoff frequency of 150 kHz. Together, these filters create which type of filter?
May 31, 2013 by Adam

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