Wednesday
October 22, 2014

Posts by Lee


Total # Posts: 785

algebra
An ellipse has foci (0,+-3) and vertices (0,+-4). What is the eccentricity of the ellipse? Please help.
March 1, 2013

algebra
Write an equation for the translation of x^2+y^2=25, by 8 units left and 4 units down. Please help.
March 1, 2013

algebra
A parabolic microphone has a cross-section in the shape of a parabola. The microphone is placed at the focus of the parabola. If the parabola is 20 inches wide and 5 inches deep, how far from the vertex should the microphone be placed? Can someone please help.
March 1, 2013

algebra
Can someone please help... a hyperbola has vertices (+-5,0) and one focus (6,0) what is the standard form equation of the hyperbola.
February 27, 2013

agebra
Can someone please help me.. find an equation that models the path of a satelite if its path is a hyperbola, a=55,000km and c=81,000km assume that the center of the hyperbola is the origin and the tranverse axis is horizontal
February 27, 2013

algebra
find an equation that models the path of a satelite if its path is a hyperbola, a=55,000km and c=81,000km assume that the center of the hyperbola is the origin and the tranverse axis is horizontal
February 25, 2013

algebra
a hyperbola has vertices (+-5,0) and one focus (6,0) what is the standard form equation of the hyperbola.
February 25, 2013

algebra
A few more question Id like for someone to check please. 1) what are the vertex, focus, and directrix of the parabola with the given equation? x^2-8x-28y-124=0 vertex (4,-5) focus (0,7) directrix y=-12 2) write an equation of a circle with given center and radius. center(-7,-6...
February 22, 2013

algebra
Can someone check my answers please and if Im wrong please explain. 1) graph 4x^2+4y^2=64. what are the domain and range? domain;all real numbers range;-4<=4<=4 2) graph 4x^2+y^2=9. what are its lines of symmetry? it has two lines of symmetry, the x axis and the y axis 3...
February 22, 2013

algebra
So x=1/12(y-4)^2+5 would be the answer?
February 21, 2013

algebra
what is an equation of a parobola with the given vertex and focus? vertex(5,4) and focus(8,4) Can someone show me the steps to get the equation please?
February 21, 2013

law class
was the sexual harassment severe in the movie "Boiler Room"?
February 20, 2013

algebra
Can someone check my answers on exploring conic sections? 1. Graph x2 + y2 = 9. What are its lines of symmetry? Every line through the center is a line of symmetry. The y-axis and the x-axis are lines of symmetry.( my choice) Every line through the center is a line of symmetry...
February 19, 2013

math
A ball dropped 16 feet. The height of each bounce of the ball is 8 feet, 4 feet, 2 feet and so on. How high will the sixth bounce be show all of your work
February 12, 2013

math
If there is a pumpkin pie eating contest, how many pumkin pies will they need if 25 people participate and they eat 7/8 of a pie show your work
February 12, 2013

algebra
Robin bought a computer for $1,250. It will depreciate, or decrease in value, by 10% each year that she owns it. a) Is the sequence formed by the value at the beginning of each year arithmetic, geometric, or neither? Explain. b) Write an explicit formula to represent the ...
February 12, 2013

algebra
the first and second is not a possible answer. 1) 1/729 1/243 1/81 1/810
February 12, 2013

algebra
I have 3 questions I need help with. 1) what is the 15th term of the sequence 81,27,9,... 2) what is a possible value for the missing term of the geometric sequence 39,_,975,_ 3) what is the sum of the finite arithmetic series (-5)+0+5+10+..+65
February 12, 2013

Math
A community center has 3 tennis teams and 5 basketball teams. No one is on both teams. How many athletes are there? Tennis---2 players Basketball---5 players Softball---10 players
February 11, 2013

science
whats the answer
February 10, 2013

Chemistry
Thanks!
February 8, 2013

Chemistry
When a fuel that contains sulfur is burned,the sulfur is converted to SO2. Suppose all of this SO2 is then oxidized in the atmosphere to SO3. The SO3 dissolves in atmospheric moisture to form sulfuric acid (H2SO4) contributing to acid rain. A particular fuel contains 1% sulfur...
February 8, 2013

Chemistry
Thanks!
February 8, 2013

Chemistry
How do you balance the equation when you have calcium nitrate and phosphoric acid?
February 8, 2013

Chemistry
How many grams of Ca3(PO4)2 can be formed from 206 g of calcium nitrate and 140 g of phosphoric acid?
February 8, 2013

Chemistry
Thanks!
February 8, 2013

Chemistry
If 16.9 g of CO2 was produced from the thermal decomposition of 41.83 g of CaCO3, what is the percentage yield of the reaction? CaCO3(s) > CaO(s) + CO2(g)
February 8, 2013

math
Thank you ms. Sue
February 7, 2013

math
Ms.Sue I got 49 pages
February 7, 2013

math
Gina read 35% of her 140 page book how many pages did she read?? Show all your work
February 7, 2013

math
A skateboard is on sale for 85% of the regular price if it is regularly priced at $40, how much is the sale price show all of your work below
February 7, 2013

algebra
Need help with this one write an explicit formula for the sequence 1/2,3//7,1/3,5/19,3/14 then find q14 I dont know how to set this up can someone please show me how this one works
February 5, 2013

algebra
got it thanks
February 5, 2013

algebra
Write a recursive formula for the sequence formula 15,26,48,92,180,.. then find the next term. can someone please help me
February 5, 2013

algebra
I think i figured it out 1,13,25,37,49
February 5, 2013

algebra
Generate the first five terms in the sequence using the explicit formula; Cn=12n-11 Please explain
February 5, 2013

algebra
Could someone check my work; 1. Generate the first five terms in the sequence using the explicit formula. yn = –5n – 5 –30, –25, –20, –15, –10 30, 25, 20, 15, 10 –10, –15, –20, –25, –30(my answer) 10, 15, 20, 25, 30 2...
February 3, 2013

chemistry
dont understand
January 31, 2013

chemistry
A gas has a volume of 590mL at a temperature of -55.0C What volume will the gas occupy at 30.0C Can someone help me?
January 31, 2013

algebra
compare the graphs of the inverse variations by comparing asymptotes, similar points, lines of reflections and quadrants y=-0.7/x and y=-0.9/x
January 30, 2013

algebra
what is the quotient in simpliest form state the restrictions on the variable z^2-4/z-3 divided z+2/z^2+z-12 i got z^2+2x-8 but am not sure of the restrictions maybe 3,-2
January 30, 2013

algebra
What is the product in simpliest form state any restrictions on the variable x^2+7x+10 / x+3 times x^2-3x-18 / x^2+x+2 I got (x+5)(x-6) / x-1, not sure on restrictions either 1 or -3,-2, and 1
January 30, 2013

algebra
Simplify the rational expression state any restrictions on the variable t^2+2t-24 / t^2-36 I got t-4 / t-6, but Im not sure of the restrictions whether its 6 or -6,6
January 30, 2013

algebra
Find the horizontal asymptote of the graph of y=-4x^6+6x+3 / 8x^6+9x+3 please explain i think there is no horizontal asymptote
January 30, 2013

algebra
please explain the step for this I have no idea. the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and back to his deck and he...
January 29, 2013

algebra
Thanks for checking my work
January 29, 2013

algebra
please explain the step for this I have no idea. the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and back to his deck and he...
January 29, 2013

physics
An athlete executing a long jump leaves the ground at a 32.3 angle and travels 7.84 m. What was the takeoff speed? If this speed were increased by just 5.0%, how much longer would the jump be?
January 28, 2013

algebra
siplify and state any restrictions on the variables. x-2/x+3 plus 10x/x^2-9 Hope someone can explain this to me.
January 24, 2013

algabre
the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and back to his deck and he needs this trip in a total of 9 hours he has a ...
January 24, 2013

Accounting
Can someone show me this bank reconciliation? On Aug 14th, One of our Partner's ( Compuville ) cash book showed a debit balance of $4,000.00. His bank statement showed a balance of $4,270.00. On comparison the following were found: * check issued amounting to $2,500.00 has...
January 19, 2013

algebra
how do the graphs of y=1/x and y=3/x-4 compare? a) compared to the graph of f=1/x the grapg of y=3/x-4 is vertical stretch by factor of 3 and a translation of 4 units left b) compared to the graph of y=1/x the graph of 3/x-4 is a vertical shrink by a factor of 3 and ...
January 19, 2013

physical sciences (motion in two dimensions)
John stand at the top of a 30m building. He throws a stone upwards with a speed of 5m/s. Calculate. (1)how long the stone is in the air. (2)the maxi mum height the stone reaches the ground?
January 17, 2013

Trigonometry
The populations, P, of six towns with time t in years are given by: I) P=1000(1.08)^t II) P= 600(1.12)^t III) P = 2500(0.9)^t IV) P=1200(1.185)^t V) P=800(0.78)^t VI) P=2000(0.99)^t a. Which towns are growing in size? Which are shrinking? b. Which town is growing the fastest? ...
January 15, 2013

algebra
Archers need to use arrows that do not bend easily. The table shows how the weight of an arrow affects its spine or the distance the center of the arrow bends when a certain constant weight is attached. Graph the data in the table to find a linear and quadratic model for the ...
January 8, 2013

algebra
Steve can you recheck my answer
January 4, 2013

algebra
this is what i got y=39 x=-117 y when x=-132 39/-117=k k=-0.3 y=-0.3*-132 y=39.6
January 4, 2013

algebra
so should be 39.6
January 4, 2013

algebra
oh ok thanks for catching my mistake
January 4, 2013

algebra
Find the value of y for a given value of x, if x varies directly with x. If y=39 when x=-117 what is y when x=-132 my answer y=k*x 39=k*-117 39/-117=k k=-0.3 y=k*x y=-0.3*-1.32 y=-3.96 can someone please check my work
January 4, 2013

algebra
not sure they are in possible answers
January 4, 2013

algebra
what is the simpler form of the radical expressio. 4 sqrt 2401x^12y^16 I know its 7x^3y^4 but not sure if looks like 7[x^3[y^4 7x^3[y^4
January 4, 2013

algebra
would the answer be 2 3sqrt 6 + 9 3sqrt18 over 6
January 4, 2013

algebra
how can you write the expression with rationalized denominator? 2+3sqrt3/3sqrt6
January 4, 2013

algebra
i dont understand
January 4, 2013

algebra
Wind farms are a source of renewable energy found around the world. The power P(in kilowatts) generated by a wind turbine varies directly as the cube of the wind speed v(in meters per second) If a turbine generates 700kW in a 5m.s wind, how much power does it generate in a 14m...
January 4, 2013

algebra
Can someone please explain this problem
January 4, 2013

algebra
The table shows the amount of milk that wisconsin dairy farms produced from 1939 to 1962 which linear model best fits this data? year milk produced(in billions of lbs 1939 12 1962 15 2005 21
January 4, 2013

algebra
thank you
January 4, 2013

algebra
Find the real solutions of the equation. -8x^3-17x^2+7x=0
January 4, 2013

algebra
thank you, helped explaining the answer
January 4, 2013

algebra
What is the equation in standard form, of a parabola that models the values in the table? x f(x) -2 4 0 -6 4 70
January 4, 2013

algebra
Coulld someone take the time and check my answers please. 11) without graphing is the system independent, dependent, or inconsistent? y=-x+5 -3x-3y=-15 (my answer; dependent) 12) your club is baking vanilla and chocolate cakes for a bake sale. they need at most 19 cakes you ...
January 3, 2013

algebra
Sorry this was duplicated
January 3, 2013

algebra
Have a few questions can someone please help me figure them out? 1) You research the cost of a gallon of gasoline over several years to look for a trend. The table shows your data. What is a line of best fit for the data? Based upon these prices, how much would you expect tp ...
January 3, 2013

algebra
Thanks Steve for the help
January 3, 2013

algebra
Have a few questions can someone please help me figure them out? 1) You research the cost of a gallon of gasoline over several years to look for a trend. The table shows your data. What is a line of best fit for the data? Based upon these prices, how much would you expect tp ...
January 3, 2013

Algebra
Thank you for checking.
January 2, 2013

Algebra
Could someone be nice enough to check my answers please? 1)Identify a pattern and find the next number in the pattern. -2,3,8,13 my answer; 18 2)Name the property of real numbers illustrated by the equation. -4(x+4)=-4x-16 my answer; distributive property 3)Solve the compound ...
January 2, 2013

algebra
which matrix represents the system of equations below. -2x-7y=3 7x-6y=12 not sure how to figure this out.
January 2, 2013

algebra
sorry the only answers i have to choose from are dependent,independent or inconsistent. my mistake
January 2, 2013

algebra
without graphing is each system independent, dependent, or consistent? -x-3y=0 x-y=4 please someone help me
January 2, 2013

algebra
thank you but how do you solve
December 10, 2012

algebra
For the function g(x)=14/x+3, find (g^-1o g)(4)
December 10, 2012

algebra
thanks
December 10, 2012

algebra
For the function f(x)=(7-8x)^2, find f^-1. Determine whether f^-1 is a function.
December 10, 2012

algebre
Can someone explain what the graph would look like for : y=-4x^2-2 and it's inverse
December 10, 2012

algebra
thank you for the help
December 10, 2012

algebra
Can someone help with inverse relations and functions? is relation t a function? Is the inverse t a function? chart looks like: x 0 2 4 6 y -10 -1 4 8 If someone could please explain this problem
December 10, 2012

algebra
Can someone please help me out.
December 2, 2012

algebra
1.what is the simplest form of the producy sqrt 50x^7y^7 * sqrt 6 xy^4 2. What is the simplest form of the radical expression 4^3 sqrt 3x + 5^3 sqrt 10x 3. What is the simplest form of the radical expression sqrt 2 + sqrt5 / sqrt 2 - sqrt 5 if someone could explain the steps ...
December 2, 2012

algebra
the answer was 10 3sqrt6
December 2, 2012

algebra
Thank you so much for the help
December 2, 2012

algebra
what is the simpliest form of the equation 3 sqrt 750 + 3 sqrt 2058 - 3 sqrt 48 possible answers 14 3sqrt6 17.5 3sqrt6 33 3sqrt6 10 3sqrt6
December 2, 2012

algebra
I need someone to explain the steps in finding all zeroes of an equation x^4-6x^2-7x-6=0
November 29, 2012

algebra
Really need help with one problem. The table shows the annual consumption of cheese per person in the United States for selected years in the 19th century. What cubic model best fits this data? Year Pounds Consumption 1915 4.156 1922 4.857 1946 7.16 1991 29.989 Not sure but do...
November 28, 2012

English
Hi again Writeacher. Just got off the phone with a NYC Teacher from the Dial-A-Teacher, and he didn't know. After what you said, I guess the correct ones are "store" and "floor", but I don't see a 3rd one? Could you please give me a different hint ...
November 28, 2012

English
What three words create assonance in the stanza: "One day a girl went walking And stepped into a store; She bought a pound of sausages Then set them on the floor."? Based on what assonance means and is used for... I'm guessing it's the words 'bought'...
November 28, 2012

college algebra, Please help!!
9x-1=144(6x) 9x-1=864x 9x-1-864x=0
November 28, 2012

algebra
Could someone please explain the steps in finding all the zeroes of the equation x^4-6x^2-7x-6=0 Have no idea
November 27, 2012

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