Friday

April 18, 2014

April 18, 2014

Number of results: 19,364

**Calculus**

if width=x, length=y, the cost=c, we have xy = 2484 c = 16.50*2x + 18.00*(2x+2y) = 33x + 36x + 36(2484/x) = 69x + 89424/x dc/dx = 69 - 89424/x^2 dc/dx=0 when x=36 so, the cost is minimum when the pen is 36 by 69. I assume you can figure the cost.
*Sunday, July 15, 2012 at 11:15pm by Steve*

**Maths**

perimeter=2(2y+y+2) perimeter= 6y+4 so, 6y+4<50 6y<46 y<46/6 length<46/3 width<46/6+2 check that.
*Saturday, October 23, 2010 at 5:16pm by bobpursley*

**physics**

A train is traveling along a straight, horizontal track at a constant speed of 20 mph (i.e.,a non-relativistic speed). An observer on the train places paint cans at the front and back of one of the cars. She then detonates the cans. Due to a malfunction, the can at the front ...
*Sunday, April 6, 2014 at 8:45pm by anonymous*

**physics**

Divide the force (230 N) but the spring constant k (790 N/m), and you will get the increase in length. You should get 0.3026 m, which is 30.26 cm. Add that to the original length to get the new spring length with that force applied. m. Assume that the spring is being stretched...
*Monday, January 30, 2012 at 12:51pm by drwls*

**Math**

The area of a rectangular photograph is 59 square inches.It is to be mounted on a rectangular card with a boarder of 1 inch at each side and 2 inches at the top and bottom.Express the total area of the photograph and the boarder,A, as a function of the width of the photograph,...
*Wednesday, October 5, 2011 at 8:11pm by Chole*

**college physics**

number turns= length/circumference. I would put length in inches to match units.
*Sunday, April 4, 2010 at 8:43pm by bobpursley*

**math**

Chords AC and BD intersect at the center of circle ABCD. If the length of CP = 8, which is the length of PB?
*Thursday, March 31, 2011 at 8:50am by mark*

**Physics**

(a) V = sqrt (T/d) T = 92 N d = lineal density (mass divided by length) (b) Twice the string length (c) V/(wavelength)
*Saturday, December 3, 2011 at 7:57pm by drwls*

**trig**

a right triangle contains a 25 angle. if me leg is of length 5 inches what is the length of the hypotenuse
*Wednesday, December 7, 2011 at 11:50am by vanessa aquino*

**geometry**

Chords AC and BD intersect at the center of circle ABCD. If the length of CP = 8, which is the length of PB?
*Thursday, March 31, 2011 at 8:50am by Anonymous*

**arithmetic**

This is for a trapezoid, so fine the top length and the bottom length for (b1plus b2) then divide in half for the Area or A
*Tuesday, October 8, 2013 at 9:37pm by Mary*

**algebra**

To the nearest tenth of an inch, find the length of a diagonal of a square whose side length is 8 inches.
*Wednesday, November 20, 2013 at 7:45pm by Mathew*

**College math**

The length of the sides of a triangle are given as 8, 15, 17. The hypotenuse is the side that is the length of ____?
*Thursday, March 13, 2014 at 3:55am by Cassandra*

**AP Calculus**

draw a rectangle with vertices (1,30), (1,3), (25,3) and (25,30) notice domain is from 1 to 25 and the range is from 3 to 30 your graph must lie within that rectangle, and it is constantly decreasing. ( f' (x) < 0 ) Since the domain ends at 25 and the range is as low as 3...
*Tuesday, December 14, 2010 at 9:21pm by Reiny*

**Calc**

If the radius is x, then the base of the rectangle is 2x let the height of the rectangle be h Perimeter = 30 = (1/2)(2πx) + 2h + 2x 30 = πx + 2h + 2x h = (30 - πx - 2x)/2 Area = A = 2xh + (1/2)πx^2 = 2x(30 - πx - 2x)/2 + (1/2)πx^2 I will let you ...
*Monday, July 18, 2011 at 1:58pm by Reiny*

**science**

when a weight of 100g is hung from the spring, its length is 9cm. when a weight of 150g is hung from it, its length is 11cm. what is the length of the spring when there is no weight hanging from it?
*Thursday, November 7, 2013 at 8:07am by Anonymous*

**Physics**

Here's the question... A rectangular solid made of carbon has sides lying along the x, y, and z axes, whose lengths are 1.06 cm, 2.12 cm, and 4.24 cm, respectively, as seen in figure below. Determine the resistance for current that flows through the solid in the x direction. ...
*Monday, February 9, 2009 at 9:55pm by Mel*

**Geometry**

original dimensions: l, w, h volume = lwh new length --- 2l/3 new width ---- w/10 new height = h/4 new volume + (2l/3)(h/4)(w/10) = 2 lwh/120 = lwh/60 or (1/60)lwh so , yes, it is B
*Monday, February 17, 2014 at 8:35pm by Reiny*

**algebra**

Considering all rectangles with a given perimeter, one side being provided by a straight given boundry, which one encloses the largest area? Letting P equal the given perimeter and "x" the short side of the rectangle, we can write for the area A = x(P - 2x) = Px - 2x^2. Taking...
*Thursday, December 8, 2011 at 6:36pm by tchrwill*

**Physics**

A uniform bar 1.000 meters in length and having a cross sectional area of 10.000cm^2 is subjected to a loading of 5750.000 Newtons. This load causes an extension to the bar length of 2.740mm. Calculate the stress and the strain produced. ANS 1 = kPa (Round to 3 decimal places...
*Wednesday, July 3, 2013 at 2:10pm by Danny*

**Calculus**

Let x and y be the two side lengths of the full rectangle. The length x will be divided in two. The total lengths of fence needed will be L = 2x + 3y. You know that x y = 5,189,400 ft^2 dL/dx = d/dx (2x + 3*5,189,400/x) = 2 - 15,568,200/x^2 = 0 at minimum L x^2 = 7,784,100 x...
*Monday, June 22, 2009 at 12:58am by drwls*

**math**

The formula for perimeter is, P = 2w + 2 L 30 = 2w + 2L 30 = 2(w + l) 15 = w + l So, for a perimeter of 30, you want to sketch rectangles that the width and length total 15. Some possible rectangles, 14 + 1 = 15 13 + 2 = 15 12 + 3 = 15 11 + 4 = 15 10 + 5 = 15 9 + 6 = 15 8 + 7...
*Tuesday, January 25, 2011 at 11:41pm by helper*

**algebra**

Visualize the candy cane made in the form of a paper cylinder. Cut the cylinder open, you will see that the "ribbon" around the candy cane or cylinder consists of 4 diagonals for 4 different rectangles. the height of each of those rectangles is 20/4 or 5 cm and the width is 3 ...
*Friday, February 21, 2014 at 2:19pm by Reiny*

**Algebra 1 (Reiny!)**

a) correct b) correct, but do you know why the volume is zero ? c) this will also answer part b) the given volume = c(8.5-2c)(11-2c) in expanded form notice if c = 4.25, the size of the cut-out, you would be cutting away 4.25 on each side of the width but the width is only 8.5...
*Sunday, February 9, 2014 at 8:59pm by Reiny*

**algebra**

2. What is the factored form of x x^2 + 6x + 8? (1 point) (x + 5)(x + 3) (x + 4)(x + 2) <------ 2*4 = 8 (x + 7)(x + 1) (x + 3)(x + 3) 3. What is the factored form of x x^2 – 7x + 12? (1 point) (x – 5)(x – 3) (x – 6)(x – 1) (x – 5)(x – 2) (x – 4)(x – 3) <------ 4*3 = 12 4...
*Tuesday, February 4, 2014 at 1:27pm by Damon*

**Maths**

A drinking straw of length 21cm is cut into 3 pieces the length of the first piece is x cm the second piece is 3 cm shorter than the first piece the third is twice as long as the first piece state term of x to represent the sum of of the length {2} write an expression in the ...
*Saturday, August 18, 2012 at 7:21pm by RAHEIM*

**math**

if the small prism is proportional to the large prism Then the height of the small prism is proportional to the height of the large prism H = k h and the length is also proportional L = k l and the width is proportional W = k w so L W H = k l * k w * k h = k^3 lwh
*Sunday, December 14, 2008 at 2:15pm by Damon*

**maths**

Assume no partial stones are used, If the long side of the stones is parallel to the long side of the veranda, 40/.6 = 66.666, so 67 stones cover the length 15/.5 = 30 stones cover the width. 67*30 = 2010 stones are needed. If the stones are oriented differently, or if ...
*Thursday, January 31, 2013 at 10:17am by Steve*

**Chemistry**

density = mass/volume. You have the mass and density, solve for volume, then substitute volume into the below equation and solve for thickness. volume = length x width x thickness. v = 20.02 x 20.02 x thickness.
*Saturday, February 2, 2013 at 4:27pm by DrBob222*

**Calculus**

A pendulum swings through an arc length of 1120 cm (Swing #1). With each further swing, the arc length is reduced by 15 % State the growth factor. Calculate the length of the arc in swing #5 I think im supposed to use this formula again, but I dont know how to use it. Tn = ar^n-1
*Wednesday, September 21, 2011 at 6:18pm by Anonymous*

**math**

Let X and Y represent the sides of the rectangle. X^2 + Y^2 = 52 = diagonal squared. XY = 24 =the area of rectangle. y = 24/X X^2 + (24/X)^2 = 52 X^2 +576/X^2 = 52 Multiply both sides by x^2 : X^4 + 576 = 52X^2 X^4 - 52X^2 + 576 = 0. used computer to help find roots: X = -4, X...
*Thursday, July 8, 2010 at 6:13pm by Henry*

**math**

let x = the width of the border The combined area of the picture with the border = (100+x)(55+x) (100 + x)(55 + x) = 9796 5500 + 155x + x^2 = 9796 -4296 + 155x + x^2 = 0 Now, use the quadratic equation to find x. x = (-b +/- sqrt(b^2 - 4ac))/2a With these numbers, I assume a ...
*Sunday, July 12, 2009 at 10:57am by Marth*

**Algebra I**

Rectangle ABCD has vertices C and d on the x-axis and vertices A and B on part of the parabola y = 9 - x^2 that is above the x-axis. a.) Find the coordinates of A, B, C, and D in terms of x. b.) Determine the Area of the rectangle as a function of x. c.) What is the domain for...
*Wednesday, July 28, 2010 at 12:43pm by Kate*

**Maths**

Looking from the side, the cylinder has an outline of a rectangle, of height 2x and width x. Since the cylinder is half-filled, at the point water touches the brim, there is as much water in the cylinder as there is air. So the water level divides the cylinder into two equal ...
*Tuesday, September 4, 2012 at 7:25am by MathMate*

**Physics**

A compound microscope has a barrel whose length is 17.4 cm and an eyepiece whose focal length is 1.7 cm. The viewer has a near point located 25 cm from his eyes. What focal length must the objective have so the angular magnification of the microscope is -330?
*Saturday, July 14, 2012 at 5:18pm by Beth*

**Quadratic equations**

x = length y = width A = x y x+y=140 A = x(140-x) A = 140 x - x^2 look at shape of parabola by completing the square x^2 -140 x = -A x^2 - 140 x + 4900 = -A + 4900 (x-70)^2 = -A + 4900 the vertex will be at x = 70 and A = 4900 and the -A means that the parabola opens down (...
*Friday, February 15, 2008 at 5:07pm by Damon*

**hs geometry**

to find the height of a tree, a student 53 inches in height measures the length of the tree's shadow and the length of his own shadow. The student casts a shadow 63 inches in length and the tree casts a shadow 67 inches in length
*Sunday, March 17, 2013 at 10:18am by joan*

**calculus**

A potter forms a piece of clay into a cylinder. As he rolls it, the length,L, of the cylinder increases and the radius, r, decreases. If the length of the cylinder is increasing at .1 cm per second, find the rate at which the radius is changing when the radius is 1 cm. and the...
*Wednesday, February 3, 2010 at 9:55pm by mandy*

**algebra**

a and b are both the lengths of the legs of a right triangle, c is the length of the hypotenuse. Find the missing length if b=24 and c=25. I don't know how to do this.
*Tuesday, December 4, 2007 at 8:07pm by Tabby*

**math**

a chessboard has diagonals of lengths 40 m. what is the length of each side of the board, to the nearest length of a centimeter? Explain t on reasoning.
*Saturday, March 15, 2008 at 4:04am by mota*

**Geometry**

Since they are of equal length, let a = length of each side. Pythagorean theorem = a^2 + a^2 = hypotenuse^2 Therefore 2a^2 = 12^2 Can you take it from there?
*Wednesday, June 30, 2010 at 9:55pm by PsyDAG*

**physics**

A pipe of length 10.0 m increases in length by 1.5 cm when its temperature is increased by 90°F. What is its coefficient of linear expansion?
*Sunday, December 19, 2010 at 12:26pm by Jesse*

**physics**

An aluminum rod at 18 degrees Celsius has a length of 2.50 meters. At what possible temperatures will it's length change by 1cm?.
*Tuesday, August 2, 2011 at 3:26am by help*

**geometry**

How do I find the length of the hypotenuse of a right triangle with only one leg length and all angle measurements
*Thursday, September 15, 2011 at 9:40pm by Maria*

**geometry**

If the base of an isosceles triangle has a length of 10, what is the shortest possible integral value for the length of each of the congruent sides?
*Monday, October 17, 2011 at 7:12pm by dee*

**Math**

Find the arc length of y = x^4 from the origin to (1, 1). Answer in length units, correct to two decimal places, please.
*Sunday, December 4, 2011 at 8:54pm by Beth*

**math**

You will need the radius πr^2 = 36π r^2 = 36 r = 6 So the surface area around the cylinder, a rectangle = 2πrh = 2π(6)(2) = 24π total surface area = 2 circles + 1 rectangle = 2(36π) + 24π = 96π
*Wednesday, March 14, 2012 at 9:32am by Reiny*

**physics**

look atface area. largest area: 6cm^2 length: 1cm Minimum area: 2cm^2 length 3 cm current will be in proportion to 1/resistance which is proportional to length/area, current=constant*area/length Min current, max resistance 1mA=constant(2/3) currentmax=constant(6/1) constant=...
*Friday, March 22, 2013 at 1:20am by bobpursley*

**Math**

There is a mathematical relationship between an airplane’s weight x and the runway length required at takeoff. For certain types of airplanes, the minimum runway length L in thousands of feet may be modeled by L(x) = 1.3 ln x, where x is in thousands of pounds. a) Estimate the...
*Thursday, April 25, 2013 at 5:40pm by Tamie*

**advanced math**

Alternatively: Considering all rectangles with a given perimeter, one side being provided by a straight given boundry, which one encloses the largest area? Letting P equal the given perimeter and "x" the short side of the rectangle, we can write for the area A = x(P - 2x) = Px...
*Thursday, November 3, 2011 at 6:44pm by tchrwill*

**Music Physics**

Given that the oboe's lowest note is B flat 3 and its length approximately 64 cm, what length would you expect for the bassoon, whose lowest note is B flat 1? What length for the contrabassoon, lowest note b flat 0?
*Thursday, April 19, 2012 at 6:44pm by AAA*

**phys**

a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this question, do I just ...
*Tuesday, October 10, 2006 at 9:46pm by slien*

**phys**

a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this question, do I just ...
*Thursday, October 12, 2006 at 12:05am by slien*

**math**

As it stands now, A and D are on the same horizontal line, and B and C are on the same horizontal line. However, we want to move only point B. So, if we keep BC parallel to AD, then we want to have BC the same length as AD, which is 6. Right now, the length of BC is 5-1 = 4. ...
*Friday, December 30, 2011 at 3:49pm by Steve*

**Algebra- word problem**

Jordan has a photograph on his wall that is 3 in. long and 6 in. wide. He takes it to be framed which increases the length and width by 2 in. each. How does getting the picture framed change the amount of wall space needed? My choice is B- Correct?? Choices A. the wall needed ...
*Sunday, May 15, 2011 at 8:14am by Mary *

**Pre-Calculus**

Draw a rectangle in a semicircle, let its base be 2x and its height be y draw a line from the centre to the vertex of the rectangle. That should be a right-angled triangle with sides x, y, and 2 and x^2 + y^2= 4 ---> - √(4-x^2) Area of rect. = 2xy = 2x(x4-x^2)^(1/2) d...
*Sunday, March 28, 2010 at 12:06pm by Reiny*

**AlgebraII**

PLEASE HELP! I DO NOT KNOW WHAT TO DO? The maximum weight that a rectangular beam can support varies jointly as it's width and the square of its height and inversely as its length. If a beam 1/2 foot wide, 1/3 foot high, and 10 feet long can support 12 tons find how much a ...
*Saturday, February 18, 2012 at 3:01pm by Tina*

**Calculus**

You are going to do 6 rectangles between x = 0 and x = 3 for LRAM, you use the height at the left. (I am not going to calculate them for you) so use f(0)= f(.5)= f(1)= f(1.5)= f(2)= f(2.5)= for the heights The base of each rectangle will be 3/6 = .5 add those all up and ...
*Thursday, February 7, 2008 at 1:07pm by Damon*

**Algebra**

a farmer wants to enclose a rectangle garden using the sides of her barn as one side of the rectangle. what is the maximum area which she can enclose with 60ft of fence? what should the dimensions of the garden be to give this area? Max area which she can enclose with 60ft of ...
*Sunday, April 29, 2012 at 7:59am by ShelbyA*

**Calc**

not clear what you mean by "left endpoints" I would mark off x= 4,6,8, and 10 f(4), f(6), .. etc would give you the heights Do you want the rectangles to overlap or underlap? rectangle 1: larger =2 x f(6) = 2(48) = 96 smaller = 2(f(4)) = 48 difference = 48, which cut in half ...
*Wednesday, April 22, 2009 at 9:53pm by Reiny*

**PreCalc (still confused)**

First thing to remember is that a square is a rectangle; it's just a special case of a rectangle. Getting back to a "mathematical way to go about it", there are two I can think of, and one involves calculus. Maybe this is set to make you appreciate calculus when you get to it...
*Sunday, November 1, 2009 at 1:01pm by jim*

**6th grade**

rectangular prism: height 7 feet, width 4 feet and length 3 feet Find the volume Cylinder: radius 3.5 feet and height 7 feet Find the volume Van cargo space measures 8 feet tall by 5 feet wide by 13 feet deep. find the volume instruments will take up about 37 cubic feet Based ...
*Saturday, November 27, 2010 at 10:59am by kim*

**maths**

1. You are cutting colored cardboard rectangles for school art show. Each art piece will be placed on one of the rectangles so the outside of the rectangle forms a border or mat for the art piece. You are to cut the cardboard to fit artwork that is 3 times longer than it is ...
*Tuesday, June 9, 2009 at 6:02am by :]*

**math**

Multiply the area of the rectangle by the square of the scale factor to get the area of reduced rectangle. Reduced area = 720 * (1/6)^2 Reduced area = 720 * (1/36) Reduced area = 720/6 Reduced area = ? sq in.
*Friday, March 4, 2011 at 1:18pm by Helper*

**math**

i want to explain about this to my kid ~I am a rectangle made up of 28 same size squares. I have 4 columns. How many rows must I have? Prove your answer with a drawing. How many squares do I have? ~I am a rectangle made up of 24 same size squares. I have 6 rows. How many ...
*Monday, March 31, 2014 at 10:53am by kodak*

**Shadow**

No. It wouldn't be that. volumes of cubes is V=s^3 where s is side length. 72= s^3+ (2s)^3= s^3+8s^3 72=9s^3 and you find s, the side length of the smaller cube, and 2s is the side length of the larger cube.
*Thursday, September 1, 2011 at 8:07pm by bobpursley*

**Trig**

Its a 30-60-90 triangle there's a line in the center that= 10 a. What is the length of the hypotenuse of triangle ABC? b. What is the length of the shorter leg of triangle ABC? c. What is the length of the longer leg of triangle ABC?
*Wednesday, February 1, 2012 at 11:12pm by BreAnne*

**math**

in a set of number rods,there is one rod of length 10,2 rods of length 9,3 of length 8,and so on.If all these rods were laid end to end in one line,how long would the line be ?
*Friday, March 1, 2013 at 9:05pm by sarah *

**equation of a line**

How to find a point on the line? x cordinate is given as x. The diagram is like a rectangle is inscribed in an isosceles right triangle whose hypotneus is 2 units long. AB is another side of the right triangle and P is a point on it(also a vertex of the rectangle). How do I ...
*Sunday, November 19, 2006 at 2:26pm by Jen*

**Environmental engineering**

Lake Kickapoo, TX, is approximately 12 km in length by 2.5 km in width. The inflow for the month of April is 3.26 cubic meter per second, and the outflow is 2.93 cubic meter per second. The total monthly precipitation is 15.2 cm and the evaporation is 10.2 cm. The seepage is ...
*Tuesday, February 22, 2011 at 1:47am by Jazmin*

**Math**

let the length be l and the width be w let the height be h lwh = 12 h = 12/(lw) base is lw sides are 2lh + 2lw cost = 4lw + 2(2lh + 2hw) = 4lw + 4lh + 4hw = 4lw + h(4l+4w) = 4lw + (12/(lw)(4l + 4w) =4lw + 48/w + 48/l
*Monday, February 4, 2013 at 5:35pm by Reiny*

**space**

You are designing a web page for your school's biology club. You want to include photos of the members on the page, which has a width of 640 pixels. You've decided that the left and right margins should be 24 pixels each and the space between each picture should be 16 pixels...
*Friday, September 10, 2010 at 6:24pm by leli*

**Math**

A photograph measuring 8 inches by 6 inches is surrounded by a mat. The mat has the same width on all sides of the photograph. The photograph and mat are put into a glass photo frame which just covers the outside of the mat. If the area of the glass surface is 120 square ...
*Wednesday, December 7, 2011 at 9:46pm by -Untamed-*

**math**

Please help! :) Garden measures 30x20 Border has a width of x (I've already solved the first part of my problem, in that the width is 3) Border needs to be covered to a depth of 3 inches. Pine bark costs $29 per cubic yard. What will the material cost to lay the pine bark ...
*Tuesday, May 10, 2011 at 12:06pm by Jo*

**math**

Please help! :) Garden measures 30x20 Border has a width of x (I've already solved the first part of my problem, in that the width is 3) Border needs to be covered to a depth of 3 inches. Pine bark costs $29 per cubic yard. What will the material cost to lay the pine bark ...
*Tuesday, May 10, 2011 at 6:47pm by Jo*

**Physics**

A capacitor has two overlapping plates of width 4.9 m and length 3.5 m separated by 1.3 cm. A dielectric of dielectric constant ę = 58.0 fills the space between the plates. If this capacitor is connected to a 35 V battery, how much energy is stored in the capacitor when it is ...
*Sunday, May 1, 2011 at 7:18pm by Sarah*

**geometry**

I assume the height of 4 cm includes the cover outside box is 6 x 5 x 4 inside it is 4 x 3 x 2 volume outside = 120 volume inside = 24 (b) so volume wood = 120 - 24 = 96 (a) length = 4 width = 3 depth = 2 -1 for cover = 1 so area bottom inside = 4*3 = 12 area sides = 2*4*1 = 8...
*Tuesday, April 24, 2012 at 7:28pm by Damon*

**ALGEBRA**

I need help with two problems to finish my assignment. #1 The length of a rectangle is fixed at 29cm. What widths will make the perimeter greater than 86 cm? If I could get the equation for this I would be able to figure it. I saw this one posted and no response yet. #2 Trains...
*Sunday, May 3, 2009 at 7:49am by mona*

**Math**

Jan built a cube from unit cubes (each 1 by 1 by 1 unit). Ken took this cube apart,and used the unit cubes to build a rectangular solid that was the same height asJan's cube but 2 units greater in width and 2 units less in length. Ken had 24 unit cubes left over. How many unit...
*Wednesday, May 1, 2013 at 2:16am by Nate Williams*

**Math: Calculus**

Estimate the area under the graph of f(x)=3x^3+5 from x=-1 to x=4, first using 5 approximating rectangles and right endpoints, and then improving your estimate using 10 approximating rectangles and right endpoints. I'm having problem with using the midpoint to find the area. ...
*Friday, November 12, 2010 at 6:59pm by REALLY NEED HELP!!!!*

**Math**

Optimization Problem A right circular cylindrical can of volume 128tπ cm^3 is to be manufactured by a company to store their newest kind of soup. They want to minimize the surface area of the can to keep costs down. What are the dimensions of the can with minimum surface ...
*Friday, March 15, 2013 at 5:18pm by Kevin*

**Help: geometry**

The length of the longer leg of a 30°– 60°– 90° triangle with hypotenuse length 4 is _____ I do not understand how to figure this out.
*Thursday, May 13, 2010 at 12:23am by BWB*

**math**

What do you think? Have you measured a stapler? Note that I'd measure the length of my leg in feet and the length of my foot in inches.
*Thursday, May 12, 2011 at 9:39pm by Ms. Sue*

**Math**

Find the length of side a in the right triangle if b=12 and c=15 I have the length as 6 but I dont think this is correct Please help
*Wednesday, November 9, 2011 at 11:40pm by Allison*

**Math**

An electric circuit has equally spaced parallel wire with connections A, B, and C. If the length of AP = 3.42 cm, what is the length of BC?
*Tuesday, April 17, 2012 at 11:09pm by Liz*

**hypothenuse**

The length of the shorter leg of a 30°-60°-90° triangle is equal to 6 inches. What is the length of its hypotenuse
*Wednesday, April 25, 2012 at 2:28pm by Mr fluffy pants*

**Physics**

energy=forcepulling* distance pulled = 49*.001 joules volume=length*PIr^2 use elongated length
*Friday, May 31, 2013 at 8:43am by bobpursley*

**Geometry**

The length of one side of an isosceles triangle is two times the base b. This length is equal to (8b - 12),in. What is the value of b?
*Wednesday, September 4, 2013 at 6:23pm by Andy*

**Calculus Hard Question**

A pendulum swings through an arc length of 1120 cm (Swing #1). With each further swing, the arc length is reduced by 15 % State the growth factor. Calculate the length of the arc in swing #5 I think im supposed to use this formula again, but I dont know how to use it. Tn = ar...
*Wednesday, September 21, 2011 at 8:07pm by Anonymous*

**math**

A cable 40 feet long is cut into three pieces so the length of the second piece is 4 times the length of the first piece, and the third piece is five more than twice as long as the first piece. Find the length of the pieces.
*Tuesday, May 31, 2011 at 2:19pm by elaine*

**math**

The lawn is rectangular shaped with a length of 10 yards and a width of 40 yards. A bag of grass seeds covers 50 square yards at a cost of $ 4.99 per bag. What is the total area of the new lawn? How many bags of grass seeds will they need to buy? What is the total cost to ...
*Wednesday, February 5, 2014 at 4:16pm by sharon*

**Algebra II**

Two sides of a triangle are equal in length. The length of the third side is three meters less that the sum of the lengthsof the other two sides.Find the length of the longest side of the triangle if its perimeter is 29 meters. Please help. Thanks.
*Tuesday, October 23, 2007 at 5:33pm by Lucy*

**Physics**

Belinda needs to find the center of mass of a sculpture she has made so that it will hang in a gallery correctly. The sculpture is all in one plane and consists of various shaped uniform objects with masses and sizes as shown. The length of the rectangle is L = 1.4 m and the ...
*Sunday, March 18, 2012 at 4:34am by Priyanka*

**physics helpt please?**

A copper wire or length 2.0M, with cross-sectional area 7.1x10^-6 m^2 and youngs modulus of 11x10^10 N/m^2 has a 200 kg load hung on it. what is its increase in length? F/A=Y* change in L/Length = (200*9.8)/7.1x10^-6=11x10^10* delta L/2m? am i even setting this equation up ...
*Tuesday, November 13, 2007 at 11:46pm by natali*

**Dr. bob please help-chemistry**

I think this is playing with the body centered cubic model. The body diagonal has a length that is four times the radius of the atom, R. The relationship between a (the length of the side) and R can be worked out by the Pythagorean theorem: (4 R)^2 = 3 a^2 Only need to set up ...
*Monday, October 27, 2008 at 11:01pm by Dr Russ*

**Math**

consider a triangle with vertices (a,b), (c,d), (e,f), with the area of the triangle b/2 a = area of an equilateral triangle with side length b c = length of diagonal of a cube with side length b a/c = the positive asymptote of the conic equation (x^2)-2(y^2)=6 d = volume of ...
*Monday, December 17, 2007 at 10:56pm by Paragon*

**math**

the surface area of a rectangular solid is given by SA = 2(LW + LH + WH) where W = width, L = length, H = height if we double all the dimensions, SA' = 2[(2L)(2W) + (2L)(2H) + (2W)(2H)] SA' = 2[4LW + 4LH + 4WH] SA' = 2*4[LW + LH + WH] SA' = 4*SA therefore, what Jan says is ...
*Friday, October 28, 2011 at 10:50am by Jai*

**Science**

What is the length of an aluminum rod at 65 C if its length at 15 C is 1.2 meters? I will be happy to critique your thinking. New length= oldlength(1+alpha*(65-15)) where alpha is the coefficent of linear expansion of aluminum 1.201386 meters
*Sunday, July 31, 2005 at 12:40pm by Janice*

**Mathematics**

Let L = original field length and W = original field width. 2L + 2W = 140 (perimeter) L+15 = 3(W-5) L = 3W -15 -15 = 3W -30 2(3W -30) + 2W = 140 8W = 140 +60 = 200 W = 25 L = 45 L' = 60 (new dimensions) W' = 20 "
*Monday, April 15, 2013 at 9:17am by drwls*

**Algebra**

Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? (A) x squared - 8x + 240 = 0 (B) 2x(2x-8x+16)=240 (C) x squared + 8x + 240 = 0 (D) x squared + 8x - 240 = 0 I got (x)(8x)=240...
*Sunday, May 4, 2008 at 5:34pm by Anonymous*

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