# Posts by lee

Total # Posts: 897

**automotive repair nd maintenance**

how does the two stroke internal combustion engine work...plz explain it....

*March 7, 2013*

**math**

find the compound interest on 2650 naria in 5yrs at 7 and half % per annum.

*March 2, 2013*

**algebra**

Skip designs tracks for amusement parks. For a new design the track will be ellipitical if the ellipse is placed on a large coordinate grid with its center at (0,0) the equation x^2/2500+y^2/8100=1 model the path of the park.The units are given in yards, how long is the major ...

*March 1, 2013*

**algebra**

A conic section has the equation x^2+y^2+12x+8y=48. Determine the following; type of conic, domain and range, axes of symmetry, and center.

*March 1, 2013*

**algebra**

How far apart are the foci of an ellipse with a major axis of 26 feet and a minor axis of 24 feet?

*March 1, 2013*

**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 don't 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*

**chemistry, ap chemistry**

AMDG i need some help bkim and zurak

*January 22, 2013*

**chemistry, ap chemistry**

bruh

*January 22, 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*

**Math**

He is wrong it is simple division ......the answer is 400 even no remainders .....

*January 14, 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 don't 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*