Friday

May 27, 2016
Total # Posts: 444

**Algebra**

Solving for the sytems of equiation using the elimination method. Book gives answers 3,2. I have tried using all the numbers to solve for x and y. I do get the 3,2. Don't know if this is another error in the book. 8x-4y=16 4x+5y=22
*April 1, 2008*

**Algebra**

Thank you for your response. I have found erros in the book. This is one of them.
*April 1, 2008*

**Algebra**

I am solving for sytems of equations using the elimination method. Book says answers are 0,-1. I have tried solving for both x & y using both the 5 and 25 . I am not getting the 0,1 as my answer. 5x-5y=5 25x-25y=22
*April 1, 2008*

**Algebra**

I am trying to solve the sytems of equations using the elimination method. 2x+4y=10 -3x+3y=-6 I tied multiplying the first equation by 2 and the second by 4. Then I tried multiplying the first equation by -3 and the secondy by 3. The book says the answers are 3,1. I am not ...
*March 28, 2008*

**Algebra**

I am solving sytems of equations algrbraically. I have tried several times and I am not comming up with he answers for the following three equations that the book gives. 1) 4x-2y=-5 -x+2y=2 Answer in book: -1,1/2 2) -5x+2y=10 5x-3y=-10 Answer in book: -2,0 3) 2x-y=2 -2y+4y=-5 ...
*March 27, 2008*

**Algebra**

Thank you for your response. This is a rough graph with the exact coordinates stated in the book. Y - - .(0,3/2) - 0 ' ' ' ' 'X - - - .(2,-7/2) - -
*March 13, 2008*

**Algebra**

My book uses the slope y-intercept method for graphing. I am trying to graph the following: y>3/2x-5/2 (sign > is greater then or equal to) The way I understand it I would start on the Y axis at 0 and go down 5 and then to the right 2 for the -5/2. Then I would go up 3 ...
*March 13, 2008*

**Algebra**

Why is first equation is x negative and in equations 2,3 & 4 answers are not negative and also sign changes? 1)Equation: x+y>1 Answer: y=-x+1 2)Equation: x-y>5 Answer: y<x-5 3)Equation: 3x-y<2 Answer: y>3x-2 Sign is greater than or equal to in the following ...
*March 11, 2008*

**Economics**

I have the following question in my assignment: The cost of producing stero systems has fallen over the past several decades. A:Use the supply-and-demand diagram to show the effects of fallaing production costs on the price and quantity of steros sold. B:In you diagram, show ...
*March 11, 2008*

**Algebra-Graphing Linear Equation**

Y<2X+4 The way I unerstand from the book to graph this equation. I would start at the Y intersect and go up to 1. The go up 2 for the slope. Then across 4 on the X axis. The book shows the graph with the coordinates of (1,6) and (0,4). When I do it the way the book ...
*March 8, 2008*

**Algebra**

4x+2>6x-1 > This should be a greater then or equal to sign in the equation. I am getting -3/-2 The book says 3/2
*March 5, 2008*

**Algebra**

I tried writing an equation to the following. It was not coming out the way the book siad it should. When you travel at a speed of 60 MPH, write an equation that represents how far youwill travel in X hours? Let each unit represent 1 hour on the X scale and 10 miles on the Y ...
*March 3, 2008*

**Microeconomics-Consumer & Producer Suplus Graphs**

Thank you for your response. I understand about consumer and producer surplus and what happens. The book shows the graph for when the price is going up. It does not give and example for when the price decreased. What the diagram's show in the book is three shaded areas for...
*February 24, 2008*

**Microeconomics-Consumer & Producer Suplus Graphs**

Can anyone help? I am trying the draw the following graphs for Consumer & Producer Suplus. I have made several attempts and I know I am not drawing them right. 1) The cost of producing stereo systems has fallen over the past several decades. A)Use a supply-and-demand diagram ...
*February 24, 2008*

**Algebra**

Linear Equation -8x+4y=-12 Answer book states is y=2x-3 I am not arriving at this answer when I simpify
*February 22, 2008*

**Algebra**

Thank you for your response. I can set up and calculate. The book says I should be getting 3 feet as my answer. That is not what I am getting.
*February 15, 2008*

**Algebra**

Fomula: A=1/2(b1+b2)h A=area of a trapezoid b1=width at the top b2-width at the bottom h=height A 7-foor tall trapezoid has 42 square feet of area. If is is 9 feet wide at the bottom, how far across is it at the top?
*February 15, 2008*

**Algebra**

Thank you for your response I am not sure where I went wrong. I will review the calculation your provided later. Your assistance is greatly apreciated.
*February 11, 2008*

**Algebra**

The folrmula F=9/5c+32 can be used to make temperature conversions with the Celsius ans Fahrenheit temperature scales. F-Fahrenheit temperature C=Celsius temperature Convert 100 degress Fahrenheit to the Celsius temperature scale. Book says answer is 37.78 Celsius I am not ...
*February 11, 2008*

**Economics**

I am taking Microeconomics. I have the following question: The cost of producing stero systems has fallen over the past several decades. a) Use the supply-and-demand diagram to show the effects of falling production costs on the price and quantity of steros sold. b) In your ...
*February 8, 2008*

**business**

I am taking Microeconomics. I have the following question: The cost of producing stero systems has fallen over the past several decades. a) Use the supply-and-demand diagram to show the effects of falling production costs on the price and quantity of steros sold. b) In your ...
*February 8, 2008*

**Algebra**

Clark's Rule is commonly used to calculate the childresn's dosage of medication: Clark's Rule is: C=A x W/150 Use the rule to calulate thr problem C- child's dose A= adult's dose W=weight of child in pounds How much would a child need to weigh to receive ...
*February 8, 2008*

**Algebra**

Yes I have tried calculating the problem. The book says the answer is 1.38. I am not getting this answer.
*February 8, 2008*

**Algebra**

Are you sure that's a negative 2.817 in your equation? Yes it is a negative. It worked for the other problems.
*February 8, 2008*

**Algebra**

The Occupational Safety and health Administration (OSHA) estblished permissible sound exposures in the work-place. This is modeled by the equation: S=-2.817H + 108.9 Use the formula for the problem: S=maximun permissible sound level in decibels H=number of hours of exposure ...
*February 8, 2008*

**Economics**

I am taking Microeconomics. I have the following question: The cost of producing stero systems has fallen over the past several decades. a) Use the supply-and-demand diagram to show the effects of falling production costs on the price and quantity of steros sold. b) In your ...
*February 8, 2008*

**Algebra**

The Occupational Safety and health Administration (OSHA) estblished permissible sound exposures in the work-place. This is modeled by the equation: S=-2.817H + 108.9 Use the formula for the problem: S=maximun permissible sound level in decibels H=number of hours of exposure ...
*February 8, 2008*

**Algebra**

Clark's Rule is commonly used to calculate the childresn's dosage of medication: Clark's Rule is: C=A x W/150 Use the rule to calulate thr problem C- child's dose A= adult's dose W=weight of child in pounds How much would a child need to weigh to receive ...
*February 8, 2008*

**Alebgra**

The lenth of a room is 3 more thean twice the width of the room. The perimeter of the room is 66 feet. What are the dimensions of the room? (Let x=the width fo the room.) Book gives the following for the answer: x + x =(3 + 2x) + (3 + 2x)=66 width=10, lenth=23 I am not clear ...
*February 4, 2008*

**Algebra**

3/4X +5 = 2 Answer in book says positive 4 I get -4?
*January 25, 2008*

**Algebra**

X/10+1.7=-3.5 X/10+1.7-1.7=-3.5-1.7 X/10=-5.20 X/10 . 10/1= 5.20 . 10 Why is the answer -52?
*January 22, 2008*

**Algebra**

-2x-3=2 -2x-3_3=2+3 -2x=5 x=-5/2 Shouldn't there be another step? Why is the answer -5/2 and not -2.5?
*January 22, 2008*

**Algebra**

Calulations for the following: -2x-3=2 Book states answer as -5/2. This does not seem to be correct answer. x/10 + 1.7=-3.5 Book states answer as -52. This also does not seem to be the correct answer
*January 22, 2008*

**government**

A voting district and the smallest geographic units for the conduct of elections is the A)precinct B)polling place C)county D)ballot
*January 1, 2008*

**Chemistry**

thanks.
*December 11, 2007*

**Chemistry**

How many protons, neutrons, and electrons are in 24 +2 Mg 12 is it 12p, 14e- or 10 e?
*December 11, 2007*

**graphing**

I have no idea how to do this
*September 2, 2007*

**science...plz help**

What happens to the circulatory system when the red blood cells malfunction? and is there a disease with hemoglobin not taking carbon dioxide out of the body correctly or fast enough....plz plz help me..i really need this http://members.aol.com/profchm/saba.html
*April 22, 2007*

**Genetics/biology**

Het/Het 3:1 Tolerant/Intolerant - Phenotypic 1:2:1 LL/Ll/ll - Genotypic Mut/Het 1:3 Tolerant/Intolerant - Phenotypic 1:3 Ll/ll - Genotypic Can't help with the diagram. Google: "punnit square definition"
*March 22, 2007*

**MGT ACC**

I really need help with this question. I keep doing it wrong so can anyone help me please. ------------------------------------------------------------ ------- The maori novelty company makes a variety of souvenirs for visitors to New Zealand. The Otago division manufactures ...
*March 13, 2007*

**microeconomics**

I really need help. I need to answer this 3 questions My first is this: Pizzas CD's ------ ------ 0 15 1 14 2 12 3 9 4 5 5 0 Using this information, calculate the marginal benefit and draw the marginal benefit curve. ****I really need to know how to calculate it. My second...
*September 18, 2006*

**plz help me**

For each event, illustrate the impact on the relevant United States market and determine what will happen to the equilibrium price and quantity in that market. I have 2 demand and supply graphs, the first one is for 3 of them and the second is for the last one. I just need ...
*September 17, 2006*

**economics**

I really need help. I need to answer this 3 questions My first is this: Pizzas CD's ------ ------ 0 15 1 14 2 12 3 9 4 5 5 0 Using this information, calculate the marginal benefit and draw the marginal benefit curve. ****I really need to know how to calculate it. My second...
*September 16, 2006*

**economics**

I really have to figure out the answers to these questions and i dont know where to start. I dont know how to draw the marginal benefit and marginal cost curves for this question. a.Sketch a marginal benefit and marginal cost diagram, with “billions of units of security ...
*September 15, 2006*