# 2m+n=0 equation 1 2m+2n=3 equation 2

32,423 results-
## Math 8th Grade

1. which equation is equivalent to y - 6 = -12(x+4)? 2. which point is located on the line represented by the equation y + 4 = -5(x - 3)? 3. which equation represents the line that passes through the points (6 -3) and (-4 -9)? 4.The population of a city

*asked by ChaBoY on December 5, 2016* -
## Chemistry

For a reaction between sodium phosphate and strontium nitrate write out the following: a) The balanced molecular equation b) The ionic equation c) The net ionic equation a) I think I have this one: 2 Na3PO4 (aq) + 3 Sr(NO3)2 (aq) --> 6 NaNO3 (aq) +

*asked by Donna on May 14, 2008* -
## math

Heather is solving an equation by graphing the expressions on both sides. If her graph intersects at an infinite number of points, which statement could describe the equation Heather is attempting to solve? A. One side of the equation is a constant, and

*asked by kristy on January 12, 2016* -
## algerba

What is the value of the discriminant, b2 − 4ac, for the quadratic equation 0 = −2x2 − 3x + 8, and what does it mean about the number of real solutions the equation has? What are the solutions to the quadratic equation 4(x + 2)2 = 36 Mischa wrote the

*asked by chelsie on May 25, 2016* -
## ALGEBRA

The table below shows two equations: Equation 1 |3x - 1| + 7 = 2 Equation 2 |2x + 1| + 4 = 3 Which statement is true about the solution to the two equations? Equation 1 and equation 2 have no solutions. Equation 1 has no solution and equation 2 has

*asked by HELP PLEASE on October 5, 2014* -
## Chem

Separate the following balanced chemical equation into its total ionic equation. AgNO3(aq)+NaCl(aq) --> NaNO3(aq)+AgCl(s) (List the ions in order of the above equation.) Write the net ionic equation for the reaction above. (Make sure the cation is

*asked by Emma on October 16, 2017* -
## Chemistry

Iron (III) Nitrate reacts with sodium carbonate to form a precipitate. Be sure to indicate oxidation states and the precipitate. Skeletal Equation: Ionic Equation: NET Ionic Equation: Balanced Equation: Spectator Ions: I got the skeletal equation, but I

*asked by Veronica on January 21, 2020* -
## ALGEBRA 1!PLZ HELP!

Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve the first equation for y. y = 2x-5 Substitute that for y in the second equation and solve for x. Then use the value of x to substitute back into the first equation

*asked by SANDRO! on November 6, 2006* -
## algebra

A school fair ticket costs $8 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who went to the fair was 30, and the total money collected was $100. Which of the following options represents the number of

*asked by Jiskha Homework Help on December 22, 2017* -
## Math

A student is trying to solve the set of two equations given below: Equation A: x + z = 6 Equation B: 2x + 4z = 1 Which of the following is a possible step used in eliminating the z-term? Multiply equation B by 4. Multiply equation A by 2.*** Multiply

*asked by Nikki on May 4, 2017* -
## algebra

Write the equation of the line that passes through point (5, 4) with a slope of 0. would this be x=5 then? no x=5 is the equation of the vertical line passing through (5,4) Any horizontal line, (slope=0), has an equation of the form y = b notice that this

*asked by stressed on May 13, 2007* -
## Chemistry

Is the following a properly written thermochemical equation? 2C8H18 + 25O2 → 16CO2 + 18H2O, ΔH = –5,471 kJ/mol No, the equation does not list the enthalpy of reaction. Yes, the equation is correct. No, the equation does not list the states of each

*asked by AM on February 15, 2017* -
## algebra (check answers)

1. what equation represents the following word sentence? the quotient of a number b and 0.3 equals negative 10 i think it's b/0.3 = -10 2. which equation is equivalent to the following equation? -3/4x + 1/8 = -3/8 a. -3/4x = -3/8 - 1/8 b. -3/4x = -3/8 +

*asked by teaopi on December 15, 2015* -
## Algebra 2

Use the following equation to perform the operations below (do not graph the equation yet): y ={x + 5}{x + 1}\{(x + 3)(x - 2)}{(x - 4)(x + 1)}) - {1}/{x - 2} What graphical feature occurs at {x} = -1? Use the "trace" function, zoom in on the graph, or look

*asked by Boy if you don't on August 6, 2015* -
## algebra 2

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x + y = 2 3x + 2y = 9

*asked by mel on August 16, 2012* -
## Algebra 1

What is an equation of a line perpendicular to the line with equation y = 1 - 3x a.y=-3x + 5 b. y=3x + 5 c.y=-1/3x + 5 d. y=1/3x + 5 To solve the linear system below, which substitution of unkowns is proper ? x + 4y= -6 5x - 3y = -16 a. substitute -4y-6

*asked by Ley on April 22, 2013* -
## physics

Which equation would you use when you were describing a flowing viscous fluid? Select one: a. The Bernouilli Equation b. The Poiseuille Equation c. The equation of continuity d. And of the Equation of continuity or the Bernouilli Equation or the Poiseuille

*asked by lisa on June 22, 2014* -
## pre cal

What is the center of the conic whose equation is x^2 + 2y^2 - 6x + 8y = 0 2.Which one of the following equations represents a hyperbola? (5 points) A) 3x^2 + y^2 + 12x - 7 = 0 B) 3x^2 + 3y^2 + 12x - 7 = 0 C) 3x^2 + y + 12x - 7 = 0 D) 3x^2 - 3y^2 + 12x - 7

*asked by Mecie on April 16, 2012* -
## math

When the problem says "Angel transformed the following equation from 6x+4-×=2 (×+1) to 10=2 (×+1). He then stated that the solution to the equation is ×=4. Is he correct? Explain" when I solved the equation I got 24=10 and 10=10. However, im having

*asked by Samantha on January 14, 2014* -
## math

When the problem says "Angel transformed the following equation from 6x+4-×=2 (×+1) to 10=2 (×+1). He then stated that the solution to the equation is ×=4. Is he correct? Explain" when I solved the equation I got 24=10 and 10=10. However, im having

*asked by Samantha on January 14, 2014* -
## math

What is the first step in solving the linear system {2x − 3y = 11 {−x + 5y = −9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve

*asked by math on March 31, 2020* -
## Math

Identify the equation as an identity, inconsistent equation or conditional equation. 1-3/2x=7/4 my answer is it is an inconsistent equation

*asked by Lisa on March 21, 2008* -
## math

compare and contrast: below are two equations. solve each equation and compare the two solutions. choose the statement that is true about each solution. equation #1 2x-3=-17 5x+3=12 A. equation #1 and equation #2 have the same number of solutions B.

*asked by HELLP PLEASE on October 13, 2014* -
## Geometry

Given: 7x + 2 = 2 + 5x – 6 Prove: x = –3 Given the equation 7x + 2 = 2 + 5x – 6, use the commutative property to rearrange the terms so that like terms are next to one another. This gives the equation 7x + 2 = 2 – 6 + 5x. Then, use the

*asked by Anonymous on February 21, 2012* -
## ordinary differential equation

consider the differential equation d^3x/dt^3 - 9(d^2x/dt^2)+ 27(dx/dt) -27x = c0s t +sin t + te^(3t) a) show that characteristic equation of the differential equation is (m-3)^3 =0 (b) Hence, find the general solution of the equation.

*asked by thigan on May 21, 2016* -
## Math

The equation 2x^2+2y^2+x+4y+2c=0 represents a circle.(let's name it S1) 1)Find the values of a,b and and show that c

*asked by Shenaya on July 31, 2017* -
## Chemistry Equation(again)

What I wrote is the balanced ionic equation. The ++ are written as exponents and could be written as we usually do it as Cu^+2 + Zn ==> Zn^+2 + Cu. For the molecular equation, it is Cu(NO3)2 + Zn ==> Zn(NO3)2 + Cu So the ionic equation for adding

*asked by DrBob222 on January 7, 2007* -
## calculus

Consider the equation x^5-cos(pi x)=0 . We can use the Intermediate Value Theorem to prove that the given equation has a root between 0 and 1. Answer the following questions. 1.show equation can’t have two real roots between 0 and 1. 2.Use Newton's

*asked by Please help me on May 8, 2020* -
## Math!

6a + 5b = 10 , 6a - b = -110 a=________ b=_________ 6a + 5b = 10 6a - b = -110 =================== Subtact equation 2 from equation which will eliminate a. Solve the resulting equation for b, then substitute into either original equation and solve for a.

*asked by kare on August 24, 2006* -
## Find the equation....

Find the equation with the given properties. Express the equation in slope intercept form. Containing points p=(-4,-2) and Q=(-2,1) What is the equation of the line? y=

*asked by Lauren on April 14, 2013* -
## algebra

Solve the equation and write down the property you use at each step to simplify the equation. Consider the equation: 4x + 11 = (5x + 34)/2. Be sure to show your work.. Thank You Jiskha..!! :)

*asked by Twanisha on February 16, 2012* -
## math

I need help with write the equation of the line which contains the point (0,negavtive 3), or written ars(0, -3) and whose slope is 4. if you want the equation in the form y = mx + b sub in -3 for y, 4 for m, and 0 for x for -3 = 4(0) + b so b = -3

*asked by Don on April 27, 2007* -
## algebra

An equation belongs to the same family of graphs as y=3x+5, but it has a y- intercept of 7. How could you graph the equation without finding the equation first?

*asked by Anonymous on March 22, 2012* -
## Algebra

Substitute -3 for a and 8 for b in the given equations. Tell whether each statement is True or False after substituting for a and b. A. The equation 5x-7(x-1)= ax+b has exactly one solution. T or F B. The equation 3(x-5)-7=ax+b has no solution. T or F C.

*asked by Emma on July 16, 2019* -
## MATH

I NEED TO SOLVE FOR Y AND X im getting rele confused on this. ok here is the prob. x+y=5 x-2y=-4 equation 1 x+y=5 equation 2 x-2y=-4 Multiply equation 1 by -1. Add equation 1 to equation 2. The x term cancels. Solve for y. THEN, put the value of y into

*asked by Tony on December 17, 2006* -
## Cosmology

The equation describing the geometry and mass-energy distribution of a homogeneous and isotropic universe is known as: - The Einstein Equation - The Friedmann Equation - The Robertson-Walker Equation - The Hubble Equation

*asked by qwerty on January 8, 2013* -
## Calculus and Vectors

A student solved the scalar equations for different planes as stated below. Explain why each equation is not the best representation for the equation for a plane. (4) (a) 2x+4y−6z+24=0 (b) −2x+y−2z+5=0 for a is it because you can factor a 2 out of

*asked by Anonymous on October 21, 2018* -
## Algebra

I have some problems that I am having trouble with and I have some that need checking please. Thanks! Solve the equation. 4. (x+7/4)=2(x-1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. (x-8/2x) +5= (x+6/x)

*asked by Soly on August 21, 2007* -
## Maths

Hi, need a bit of help on this one. A straight line passes through the points (4,3) and (10,0), I need to write down the equation of the line in the form y=mx+c, I have tried but I cant seem to get the second coordinates to satisfy the equation. Here is

*asked by Del on July 9, 2010* -
## solution of an equation

can someone please give me an example of a solution of an equation An equation is a statment with the equal sign = in it. If we have y=2x+3 and we're asked to find x when y=7 then we would have to solve 7=2x+3 The solution of that equation is x=2. Was

*asked by alejandra on September 28, 2006* -
## chemistry

How do you compare and contrast a chemical equation and an ionic equation? Is a chemical equation any equation while an ionic equation deals with the gain/loss of electrons? A chemical equation usually consists of what I call a molecular equation whereas

*asked by Carter on December 15, 2006* -
## maths algebra

HI STEVE, THANKS for your reply back it was the wrong answer the one you worked, yes a hard question, here is an example of simultaneous questions. x-2/3 + y-1/4 =13/12 (1) 2-x/2 + 3+y/3 =11/6 (2) first step is to get rid of fractions. in equation (1) the

*asked by mohammad on November 13, 2014* -
## Factoring

What does 3x^3-3x+2=0 come out to? How would I solve this? Is the x cubed supposed to be x squared? You can compare the equation with the identity: (a+b)^3 = a^3 + 3 a^2 b + 3 a b^2 + b^3 which you can rewrite as: (a + b)^3 = 3 ab (a + b) + a^3 + b^3 (1)

*asked by Ace on May 30, 2007* -
## Algebra

Thank you Christina.. I am taking Algebra online...something I would never recommend....How would I write the equation of the line passing through (6,37) and (1,12)? the most common way is to use y=mx + b where m is the slope and b is the y-intercept so

*asked by Misty on July 27, 2007* -
## Chemistry

I am having a bit of difficulty getting the net equation and the net ionic equation and the net ionic equation. I think I have the balance equation right. Thanks in advance for any help. For the acid base neutralization reaction of carbonic acid,

*asked by Amanda on March 4, 2010* -
## Physics help 2

I've asked the question "what is the fundamental equation to find the speed of a rocket." That's what I am having problems with because there are more than one. How do I know which one is the preferred equation used? The preferred equation is the one that

*asked by tracey on November 7, 2006* -
## maths

What would the equation be of a straight line that passes through the points (1,1) and (3,3) ?? write the equation for the line: y= mx+ b put the first set of points in.. 1=1m + b then the second equation 3=3m + b subtract the equations... 2=2m so you know

*asked by kat on June 9, 2007* -
## algebra

The equation -5x-3y=2 is a linear equation in standard form. From this equation, answer the following:a. Find the y and x-intercepts b. Write this equation in slope-intercept form.

*asked by Keonn'a on September 16, 2018* -
## Calculus

Solve the differential equation dy/dx = -xe^y and determine the equation of the curve through P(1,2) I tried solving the differential equation and I get y = log(x^2/2 + C). Is this correct? Now I forgot how to find the equation. Thank you!

*asked by Robert on August 6, 2012* -
## Linear Functions!!!!

Which equations represent a linear function? Equation 1 y=5x-2 Equation 2 y=-1/3x Equation 3 y=x^2-3 Equation 4 y=1

*asked by Anonymous on April 15, 2015* -
## EQUATIONS

Which equations represent a linear function? Equation 1 y=5x-2 Equation 2 y=-1/3x Equation 3 y=x^2-3 Equation 4 y=1 A 1 and 2 B 2 and 3 C 1, 2 and 3 D 1,3, and 4

*asked by Anonymous on April 15, 2015* -
## maths equations

could you please help me on this equation r = sx2/2t im really stuck Your non-use of parenthesis makes in difficult to know what the equation is. What are you trying to do with the equation? sorry im trying to make x the subject divide each side by s r/s=

*asked by bex on May 13, 2007* -
## Algebra

I am re posting this for fear that it was overlooked earlier. I have also decided to show my work in the hopes of preventing any issues that might arise. Solve the absolute value equation. I y+3 I +5=2y Would the solutions be 8=y and y=2/3? Subtract 5 from

*asked by Anonymous on October 13, 2009* -
## mathematics

In a mathematical equation, the coefficient is A. the numeric value of the unknown that makes an equation true. B. the term brought from one side of an equation to the other by performing the opposite operation. C. a number or quantity placed before

*asked by Anonymous on May 14, 2009* -
## Algebra

My instructions are to solve the problem by showing the steps and identify as a conditional equation, an inconsistent equation or an identity. 0.06q + 14 = 0.3q - 5.2 You can convert that to 0.24 x = 19.2 and solve it for x. The original equation is

*asked by Bianca on June 29, 2007* -
## chemistry

1. Calcuate the distance(km) from the Earth to the Moon if it takes light 1.3 seconds to make the trip? 2. Saturn is about 1.2 billionkm from Earth. How long does it take light to travel that distance? (I was only given the wave equation, Max Plancks

*asked by Brooke N on November 11, 2015* -
## Algebra

Solve each literal equations for the indicated variable D = C - s/n ( for s) s/n = D - C Next, multiply both sides of the above equation by n, to get the equation for s. i don't understand could you type it how it looks This is an example Tammy If you have

*asked by Tammy Evert on July 8, 2006* -
## CountIblis, can i bother you

Countiblis, i know that you might be busy do you mind if i ask you the following for help.Only if you can please. can you explain to me just one more thing so i can undestand it. Now i have an equation which is : 3x = 3x + 5 which I know has no solution to

*asked by jasmine20 on January 3, 2007* -
## College algebra

Given a quadratic equation in the form y = ax2 +bx +c , and four choices of graphs representing that equation, how can you tell which choices could be eliminated right away by looking at the equation and looking at the graphs and doing some minimal

*asked by Belle on June 6, 2011* -
## Chemistry

For the equation give the formula equation, ionic equation, and the net ionic equation after predicting the products and balancing. Using the solubility rules to indicate solid or aqueous each formula. AgNO3 + NaCl

*asked by Cindy on October 30, 2013* -
## Math

4(j)-7=9 Add 7 to both sides of the equation and you get 4 j = 16 Now divide both sides of the equation by 4 and you will find out what the value of j is. Whenever you perform the same mathematical operation on both sides of an equation, you end up with

*asked by tonya on September 1, 2006* -
## Math (Updated)

Please tell me if these answers are correct: 1. Is ( 0, 3) a solution to the equation y = x + 3? Yes No 2. Is ( 1, -4) a solution to the equation y = -2x? Yes No 3. Look at the following points: ( 4, 0) ( 3, -1) ( 6, 3) ( 2, -4) Which are solutions to y =

*asked by LoyaltyIsFake on September 6, 2017* -
## Math

For the given equation r=1/(3-4sintheta) a. Graph the equation in polar form. b. Reduce the equation to simplest rectangular form. c. Determine the Center and the type of graph of the resulting equation.

*asked by Justine on June 25, 2015* -
## College Physics

If you square the equation v=v0 + at, you'll have an expression for v2. Equate the two expressions for v2, and show that the resulting equation reduces to the equation x= x0+v0t + 1/2at2.

*asked by Whitney on January 30, 2012* -
## Algebra: please check

Find the equation of a line that passes through the point (1,2) and has a slope of 1/3. Show how you found the equation. Would the equation be: y-2=1/3(x-1) Do I need to finish this? I am not sure how.

*asked by bart on June 8, 2010* -
## Algebra

Find the equation with the given properties. Express the equation in slope intercept form. Containing points p=(-4,-2) and Q=(-2,1) What is the equation of the line? y=

*asked by Jenn on April 14, 2013* -
## Algebra

Why does this happen? A=3 and b=2 A+b=c is the equation. Multiplying both sides of the equation makes the equation a^2+2ab+b^2 which is equal to a^2+ab-ac=-ab-b^2+bc Dividing by (a+b-c) we find a=-b or 3=-2 Why?

*asked by Ali on December 3, 2009* -
## Algebra 2

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x – 2y = 2 x + 3y = 17

*asked by Mike on April 25, 2011* -
## Math

Did I do this problem correctly? Solve the following system by first handling the equation of the two lines: x=(0, 2) y=(-2, 1) x=(0, -1) y=(-3, -2) Equation 1: y= -x1 Equation 2: y=4x/3+2T Is this the correct answer?

*asked by B.B. on September 18, 2009* -
## Algebra

If equation 1 is perpendicular to equation 2, rearrange and find the value of m. Equation 1: 3=9x−2y Equation -8=mx+3y

*asked by Hayden on November 13, 2018* -
## math/Check!

okay so the question is as follows: determien the standard form of the equation of a hyperbola with vertices(+or- 2,0) and passing through (4,3) is this right? x^2/2^2 - y^2/b^2 =1 Since P(4,3) passes through, the x and y coordinates satisfy the equation:

*asked by sammy boy! on December 5, 2006* -
## Math

Consider the equation x^2 + 20 = 12x A) draw geometric diagram representing this equation. B) Show how to complete the square geometrically. C) Solve the equation.

*asked by John on April 10, 2008* -
## math/check!

okay so the question is as follows: determien the standard form of the equation of a hyperbola with vertices(+or- 2,0) and passing through (4,3) is this right? x^2/2^2 - y^2/b^2 =1 Since P(4,3) passes through, the x and y coordinates satisfy the equation:

*asked by sammy boy! on December 5, 2006* -
## maths

Show that the equation (1) divided by (x+1) - (x)divided by (x-2)=0 has no real roots Well, to begin, start with 1/(x+1-x). The x's cancel out because they are opposite signs, so now you have 1/1, or just 1. Then, you are dividing 1 by (x-2). In order for

*asked by rochelle on January 28, 2007* -
## Mat 116

Solve the system by graphing 8x-6=-18 6y-8x=18 divide 1 equation by 2 4x-3y=-9 divide 2 equation by -2 -4x-3y=-9 this makes both equation dependent slope intercept of two equation 4x-3y=-9 3y=4x+9 this makes this consistent. Just helping if I can.

*asked by Robin on April 11, 2010* -
## chemistry

write the balanced formula equation and the net ionic equation for the reaction of sodium hydroxide with hydrochloric acid. Formula equation.............. net equation.............

*asked by denis on October 30, 2011* -
## math

What is the first step in solving the linear system {2x−3y=11 {−x+5y=−9 by the substitution method in the most efficient way? A. Solve the first equation for x. B. Solve the first equation for y. C. Solve the second equation for x. D. Solve the

*asked by CWOSSANT on April 3, 2020* -
## Math

Could someone please help me. Solve the linear equation by substitution. Y=10-2.2x 5x+y=70 For the first equation I am getting x=21.4 and for the second equation I am getting y=-37. The answers are 21 3/7 and -37 1/7. Could you show me how you do this so I

*asked by Cherie on January 4, 2015* -
## Alegebra 1

Each pair of equations below is equivalent. What was done to the first to get the second; in other words something was done to both sides of the first equation to "turn it into" the second equation - what was done to the first equation? Any help would be

*asked by Gamzee :o) on August 20, 2012* -
## Math (pre calculus)

State whether the given equation is true for all values of the variables (disregard any value that makes a denominator zero) equation one (2/ 4 + x) = (1/2) + (2/x) equation two (1 + x + x^2 / x) = (1/x) + 1 + x

*asked by Danielle on February 6, 2014* -
## math

4. From your equation, find the European equivalent for U. S. size 8. equation~ m = (y2 – y1) / (x2 – x1) m = (39-34) / (5-3) m = 5/2 b=26.5 Equation = y=5/2x+26.5 Can someone please help me answer this? I have a graph if you need it... ps thank you

*asked by Abby on November 3, 2015* -
## math+check!

okay so the question is as follows: determien the standard form of the equation of a hyperbola with vertices(+or- 2,0) and passing through (4,3) is this right? x^2/2^2 - y^2/b^2 =1 Since P(4,3) passes through, the x and y coordinates satisfy the equation:

*asked by sammy boy! on December 5, 2006* -
## Math (Reflection across y=x line)

Here's a question that I am having trouble with: What is the resulting equation when y=x^3+2x^2 is reflected across the y=x line? I know that I need to switch the y with the x's in the equation, so is the answer they're looking for simply x=y^3+2y^2 or do

*asked by Randy on April 5, 2011* -
## Math

Use graph of the function f(x)=x2 to find how the number of roots of the equation depends on the value of b. a)x^2=x−b If b < ANSWER, the equation has 2 roots. If b = ANSWER, the equation has 1 root. If b > ANSWER, the equation has no roots. b)

*asked by Anonymous on April 11, 2020* -
## Algebra

'L' has y-intercept (0,-3) and is parallel to the line with equation y=2/3x+1. (Instructions - write the equation of the line 'L' satisfying the given geometric conditions) We know that two lines that are parallel must have the same slope. So this line

*asked by Bee on August 7, 2007* -
## Graphs

The vertices of a triangle are A(13,13), B(9,3), and C(-1,1). Determine the equation of the median AM, where M is the midpoint of BC. Midpoint M of BC = ((9-1)/2,(3+1)/2) =(4,2) slope AM = (13-2)/(13-4) = 11/9 So the equation of the median is 11x - 9y + c

*asked by Shay on April 4, 2007* -
## Alg 2

Complete the equation for te function picturEd in each mapping diagram. The domain is 1,2,3,4 and the range is 2,4,8,16. The equation is a number times X what's the equation. The book says that the answer is 2x but I don't know how they got that. Please

*asked by Jessica on August 26, 2010* -
## MATH

Find all real solutions of the equation by first rewriting the equation as a quadratic equation. (Enter your answers as a comma-separated list.) 4x4 + 15x2 − 4 = 0

*asked by Emmett on August 4, 2012* -
## Chemistry

What do I do when writing the net ionic equation for Magnesium nitrate reacted with sodium chloride? I've wrote out the molecular equation and the total ionic equation. Everything cancels out....under my total ionic equation do i just write no reaction?

*asked by Jack on January 19, 2011* -
## math

waterline in my back yard is represented by the equation Y=-1/4x +8 What is the slope of the equation what is the Y intercept of the equation?

*asked by rick on October 5, 2010* -
## Math

How would I simplify this quadratic equation: y=-15/20.25(x^2+3x+2.25)+0 This is my work already done the original equation I was given but I need help simplifying the equation I have found.

*asked by Alex on December 8, 2014* -
## Algebra

Is it possible to find the slope of a line if the equation has two ys? Find slope of the line whose equation is 8y = 7 - 2y Solve for y and you'll have a horizontal line. Combine the y terms. 8y+2y=7 10y=7 y=7/10 The general equation for a straight line is

*asked by Samantha on November 3, 2006* -
## Algebra 2

Explain how you can tell what kind of conic section a quadratic equation describes without graphing the equation. Can you do this by writing the equation in standard form? (That's what my answer key says... but I don't know how/if it's actually right)

*asked by Fading on April 18, 2017* -
## maths

I've to solve the following absolute value equation 8|w-7|=72. I solved the equation and the answers I got were -2 and 16. However the problem is that when I'm checking the equation with the answers it's not coming right. I.E. 8|16-7|=72 8|9| = 72 8(9)= 72

*asked by bindiya farswani on January 30, 2010* -
## math

determine the equation of the line in y=mx+b form that passes through 1. (-8,1) & (-9, 2) 2. (3,7) & (-5, 9) 3, (-4,0) & (4,6) Part B ) For each equation Rewreite the y=mx+b equation in general form Ax+by+c=0 where A is positive b and C are integers In

*asked by thomas on February 8, 2007* -
## trinometry

consider the polar equation r=7 cos(θ+ pi divided by 4) A) change the equation to rectangular coordinates. B) by completing the square, obtain the Standard form of this well-known equation. I NEED HELP WITH THIS PROBLEM I DON'T KNOW WHERE TO START.

*asked by jojo on November 20, 2015* -
## Math

Rewrite each equation below. Then solve your new equation. Be sure to check your solution using the original equation. (n+4)+n(n+2)+n=0

*asked by Anonymous on January 11, 2016* -
## Math

ewrite each equation below. Then solve your new equation. Be sure to check your solution using the original equation. 4/x=x+3

*asked by April on January 11, 2016* -
## chemistry

Does this equation need to be balanced? AlCO3 => AlO+CO2 Also, how would this equation be balanced? NiCl+O2 => Ni2O3+Cl2O5 Neither equation you have is an equation so they can't be balanced. Do you mean aluminum carbonate. That would have the formula

*asked by Carter on December 14, 2006* -
## Algebra II

1)What method(s) would you choose to solve the equation: x2 + 2x - 6 = 0 A. Square roots; there is no x-term. B. Quadratic formula, graphing; the equation cannot be factored easily since the numbers are large. C. Factoring; the equation is easily factored.

*asked by Hally on January 15, 2013*