Friday

July 31, 2015

July 31, 2015

Number of results: 13,748

**math**

suppose you have 54 feet of fencing to enclose a rectangle dog pen . the function a= 27x- x^2 , where x = width , gives you the area of the dog pen in square feet . what width gives you the maximum area ? what is the maximum area ? round to the nearest tenth as necessary .
*May 6, 2012 by Anonymous*

**precalculus**

Find the angle between the two sides of length 6 in an isosceles triangle that has one side of length 9 and two sides of length 6. Find using the inverse.
*April 28, 2011 by Victoria*

**precalculus**

Find the angle between the two sides of length 6 in an isosceles triangle that has one side of length 9 and two sides of length 6. Find using the inverse.
*April 28, 2011 by Victoria*

**Biology**

During skeletal muscle contraction: Choose one answer. A. the A and I bands do not change length. B. cross bridges are formed between myosin and actin. C. minimal tension can be generated when the muscle is close to its normal resting length. D. the myofilaments change length...
*November 7, 2010 by Dean*

**Math**

Find the surface area of rectangular pyramids 1. Length= 1.15ft Width=0.82 ft Height of the slanted face =3.17ft Surface Area=7.1879ft^2 Formula for Rectangular Pyramid Surface Area : B+1/2pl B=area of base p=perimeter of base l=height of slanted face
*February 5, 2014 by Jerald*

**Math Ms Sue ???**

The image of an eraser in a magnifying glass is three times the eraser’s actual size and has a width of 14.4 cm. What is the actual width of the eraser in cm? a) 14.4 cm. b) 3 cm. c) 43.2 cm. d) 4.8 cm. is it C? A square has 16-cm sides. What is the perimeter of the image of ...
*May 26, 2015 by Gaby *

**8th grade math**

the ? says "the apatosaurus dinosaur averaged 70 ft. in length. This is 2800% of the avearage length of a Compsognathus dinosaur. what was the average length of the Compsognathus?(if necessary round to the nearest hundreth") i think its proportion. {part over whole = % over ...
*January 13, 2009 by brianna*

**pre-calc**

A box with an open top is to be constructed by cutting equal-sized squares out of the corners of a 18 inch by 30 inch piece of cardboard and folding up the sides. a) Let w be the length of the sides of the cut out squares. Determine a function V that describes the volume of ...
*February 8, 2015 by moshie*

**maht,correction**

Find the area of the rectangle shown in the figure. length = radical (3) + radical (5) width = radical (3) + radical (5) My answer: a= 8 + 2 radical (15) or a = 15.75 agree, you seem to be able to do these should i leave it as the radical form or the decimal form which is more...
*March 21, 2007 by jasort20*

**Math **

The image of an eraser in a magnifying glass is three times the eraser’s actual size and has a width of 14.4 cm. What is the actual width of the eraser in cm? a) 14.4 cm. b) 3 cm. c) 43.2 cm. d) 4.8 cm. is it C? A square has 16-cm sides. What is the perimeter of the image of ...
*May 26, 2015 by Gaby *

**math**

hey everyone can you guys please answer these 5 questions or 3 or 2 how many you want to answer I just need answers for these last 5 since I did the rest and thanks to you all because I do appreciate this. 1.The length of the driveway shown on a blueprint is 2 inches. If the ...
*January 26, 2014 by Annabelle*

**math**

A rectangular field is to have an area of 500 sq m. a) write the perimeter, P, of the field as a function of the width, w. b) find the domain of the function in part a. c) use a graphing calculator to sketch the graph of the function in part a. d) describe what the graph found...
*January 28, 2014 by Meli*

**MATH**

Find the length of segment RS if S between R and T, the length of RS is 1/3 the length of segment RT, RS=3x-3 and ST=2x+6.
*February 12, 2012 by Debbie*

**math**

Find the lateral and surface area of the right rectangular prism whose length is 7 cm, width is 5 cm, and height is 1.5 cm. I think the answer is 36 for lateral area and 106 as surface area. I made a formula, 2(7 x 1.5 + 1.5 x 5)) and I got 36. Then I made another formula, 36...
*November 12, 2007 by keisha*

**math**

the length of the blue ribbon is two-thirds of the length of the red ribbon. writh an equation to find the length r of the red ribbon
*February 3, 2014 by cam*

**geometry**

John claimed he had a garden twice as large as Al's retangular-shaped garden that measured 15 ft by 30 ft. When they visited John's rectangular-shaped garden, they found it measured 18 ft. by 50 ft. Al claimed that it could not be twice as large since neither the length nor ...
*January 10, 2011 by crystal*

**Physics**

A spring has an unstretched length of 9.8 cm. The potential energy stored in the spring is V when the spring is streched to a length of 11.8 cm. What is the stretched length of the spring when its potential energy is 2.2 V? What compressed length will result in a potential ...
*October 7, 2013 by Maddie*

**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 ...
*November 13, 2007 by natali*

**geometry**

Triangle ABC is congruent to triangle DEF. If the length of AB is 12 feet and the length of AC is 10 feet. Find the length of DE. can someone please help me on this question please and thank youu :)
*September 3, 2011 by Alexis*

**Math**

The total perimeter of the dog run is 36 feet. The length of e is equal to the sum of a and c. The length of f is equal to the sum of b and d. The length of e is 8 feet. A ,b, c, and d are consecutive numbers, in that order.
*March 13, 2012 by Nick Benedetto*

**Physics 121 HW**

A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall. Note that the distance from the left edge of the sign to the wall...
*July 14, 2010 by Jay*

**math(CHECK ASNWERS)**

PLEASE CHECK MY ANWERS THANKS 1.The length of the driveway shown on a blueprint is 2 inches. If the actual length of the driveway is 20 feet, what is the scale of the blueprint? 1 in. = 1 ft 1 in. = 2 ft 1 in. = 10 ft (I PICK THIS) 1 in. = 40 ft 2.Marcus built a model car that...
*January 26, 2014 by Annabelle*

**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 ...
*November 27, 2010 by kim*

**algebra 1**

A manufacturer is cutting plastic sheets to make rectangles that are 11.125 inches by 7.625 inches. Each rectangle’s length and width must be within 0.005 inches. A. Plot the acceptable range of lengths on the number line that follows: B. Write an inequality to represent the ...
*November 24, 2013 by mark*

**Mathematics**

Q1.A man earn $1200 and spends $450 per month.Find ratio of (a)His income to his expenditure and (b)His savings to his income Q2.An open water tank with length 20 cm and width 15 cm holds 4.8 liters of water.calculate the height of the water level tank and the total surface ...
*May 14, 2011 by Envy Green*

**Scientific Notation - PLEASSEE**

A rectangular yard had a length of 0.006 kilometer and a width of 5x10^-3 kilometers. A. Use scientific notation to express the ares of the yard in kilometers, showing each step in the process. B. Convert the area into square meters using the conversion below. 1 sq. kilometer...
*November 20, 2013 by andra *

**physics**

A chain of length l and mass ë per unit length is fully open and is held on a high frictionless table with y1 of its length hanging from the side of the table as shown in figure. When released, it starts slipping off the table. By calculating the speed of the chain as it slips...
*October 29, 2010 by anil*

**math,algebra**

Can someone set this up in equations so i can solve them i would greatly appreciate it. THanks. Problem #3 The base of a ladder is 14 feet away from the wall. The top of the ladder is 17 feet from the floor. Find the length of the ladder to the nearest thousandth. Problem #4 A...
*April 17, 2007 by jasmine20*

**Math**

I forget how to do these type of word problems. Assume you working on the house pictured below. The length of the house is 50 feet, the width is 30 feet, and from the ground to the gable (the height of the rectangle) is 10 feet. The height of the triangular prism on top is 6.5...
*September 26, 2012 by Alisa*

**Calculus**

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 30ft, find the dimensions of the window so that the greatest possible amount of light is ...
*November 5, 2011 by Anonymous*

**Physics**

The microscope has a converging lens (the eyepiece) with a focal length of 2.50 mounted on one end of a tube of adjustable length. At the other end is another converging lens (the objective) that has a focal length of 1.00 . When you place the sample to be examined at a ...
*April 22, 2010 by Robyn*

**Math: Calculus**

The max. weight M that can be supported by a beam is jointly proportional to its width w and the square of its height h, and inversely proportional to its length L. a) write an equation that expresses the proportionality. b) determine the constant of proportionality if a beam ...
*September 22, 2009 by Anonymous*

**Math**

Danny needs to buy sand for this box. He wants to nearly fill the box leaving only 6 inches empty at the top. How much sand does Danny need if the length is 12 feet the width is 2 feet and the height is 3 feet. I first found the volume which was 72 feet and since 1 ft=12 ...
*February 4, 2014 by Jerald*

**Algebra**

A board 5 feet long is cut into two pieces such that the length of one piece is two-thirds of the length of the other piece. Find the length of the shorter piece of board
*January 29, 2013 by Chanelle*

**math**

a wire 54cm long is cut into three pieces. the second piece is twice the length of the first, and the third piece is three times the length of the first. Find the length of each piece?
*December 11, 2013 by shariza*

**Math**

You complete 3centimeters of a necklace in an hour. Each hour after the first, you triple the length of the necklace. Write an expression using exponents for the length of the necklace after three hours. Then find the length.
*September 19, 2014 by Erik*

**algebra**

an isosceles triangle is one in which two sides are the same length. The perimeter of an isosceles triangle is 36cm if the length of the congruent sides is 4 times the length of the third side, find the dimentions of the triangle
*February 12, 2015 by Mia*

**Calculus**

You are an engineer in charge of designing the dimensions of a box-like building. The base is rectangular in shape with width being twice as large as length. (Therefore so is the ceiling.) The volume is to be 1944000 m3. Local bylaws stipulate that the building must be no ...
*November 13, 2011 by Veronica*

**physics**

A pendulum clock can be approximated as a simple pendulum of length 1.20m and keeps accurate time at a location where G=9.83m/s2. In a location where g=9.73m/s2, what must be the new length of the pendulum, such that the clock continues to keep accurate time9 that is, its ...
*March 31, 2007 by Cavin*

**Physics**

A vertical container with base area of length L and width W is being filled with identical pieces of candy, each with a volume of v and a mass m. Assume that the volume of the empty spaces between the candies is negligible. If the height of the candies in the container ...
*September 1, 2014 by AGuy*

**Math**

The first question is this: Helen designs a rectangle with an area of 225 square units. Her rectangle is the largest rectangle (that is, with largest area) with whole-number side lengths that can be made from the perimeter of the rectangle. A. Whay are the length and width of ...
*February 25, 2013 by Gabby*

**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 ...
*October 10, 2006 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 ...
*October 12, 2006 by slien*

**math,correction,plz**

Perform the indicated division. Rationalize the denominator if necessary. Then simplify each radical expression. Problem #54 (6-radical(20))/(2) My answer: 3-radical(5) Problem #50 Find the area of the rectangle shown in the figure. width = radical (3) + radical (5) Length = ...
*March 10, 2007 by jas20*

**math gr.10**

Hi! I have been stuck on this problem for the past 20 minutes. Please help! A rectangular garden 30m by 40m has two paths of equal width crossing through as shwon. Find the width of each path if the total area covered by the paths s 325m^2. () - represents garden t - ...
*May 11, 2011 by jamie*

**math**

Rachel cut a length of rope 4 1/3 meters into two pieces. The length of one piece of rope is 2 1/2 meters. What is the length of the second piece of rope. Please answer and explain.
*April 3, 2013 by Anonymous*

**Math**

You complete 3 centimeters on your necklace in an hour. Each hour after the first,you triple the length of the necklace. Write an expression using exponents for the length of the necklace after 3 hours.Then find the length.
*September 16, 2014 by Mark*

**Calculus**

Luke and Leia are trapped inside a trash compactor on the Death Star. The side walls are moving apart at 0.1 m/sec, but the end walls are moving together at 0.3 m/sec. The volume of liquid inside the compactor is 20 cubic meters, a constant. Write an equation expressing the ...
*March 19, 2011 by Amanda E.*

**Elasticity (Physics)**

A tunnel of length L=150m, height H=7.2m, and width w=5.8m (with a flat roof) is to be constructed at a distance d=60m beneath the ground. The tunnel roof is be entirely supported by square steel columns, each with a cross sectional area of 960 cm^2. The mass of 1.0 cm^3 of ...
*September 9, 2009 by David*

**calculus**

The top and bottom margins of a paster are each 6 cm and the side margins are each 4cm. If the area of printed material on the poster is fixed at 384cm^2, find the dimensinos of the poster with the smallest area. I would like to know if my work is correct. x = width of print y...
*November 20, 2011 by Daniel*

**physics 121 hanging sign**

A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall. Note that the distance from the left edge of the sign to the wall...
*July 14, 2010 by Jay*

**Physics: Angular Width. Why is my answer wrong?**

A beam of yellow laser light (590 nm) passes through a circular aperture of diameter 5.0 mm. What is the angular width of the central diffraction maximum formed on a screen? I can't seem to get this answer right. I don't think I am finding the first part of the problem ...
*November 12, 2010 by Sar*

**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...
*May 1, 2013 by Nate Williams*

**alegebra**

1. What is the factored form of 4x 2 + 12x + 5? (1 point) (2x + 4)(2x + 3) (4x + 5)(x + 1) (2x + 1)(2x + 5) (4x + 1)(x + 5) 2. What is the factored form of 2x 2 + x – 3? (1 point) (2x + 3)(x – 1) (2x + 1)(x – 3) (2x – 3)(x + 1) (2x – 1)(x + 3) 3. The area of a rectangular ...
*February 4, 2014 by fluffy*

**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 ...
*February 18, 2012 by Tina*

**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 ...
*May 15, 2011 by Mary *

**Math (Proportions)**

3. The ratio of the altitude of a triangle to the length of its base is 5:12. Calculate the altitude if the length of the base is 42mm. 17.5 length/base= 5/12=x/42= 17.5
*October 18, 2013 by Jerald*

**Physics repost please help**

The mass of a string is 6.0 x 10^-3 kg, and it is stretched so the tension in it is 195 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string? Isn't wavespeed= sqrt(Tension/(mass/length)) you know ...
*April 27, 2007 by Mary*

**Math**

Zain goes swimming. He swims the first length of the pool in 2.5 minutes. The time he takes to swim each length is 10 seconds more than he took to swim the previous length. A. Find the time Zain takes to swim the fifth length. B. Find the time taken for Zain to swim a total of...
*March 19, 2015 by Sam*

**Melanie**

A right triangle has a hypotenuse of length 13 meters and one side of length 5 meters. What is the length of the third side and the angle between the hypotenuse and the 5 meter side? A. 144 meters, 67.38 degrees B. 12 meters, 22.62 degrees C. 10 meters, 22.62 degrees D. 12 ...
*January 19, 2013 by Physics*

**geometry**

the quadrilateral has a pweimeter of 60 meters. mp and no are congruent the length of mn is 10 meters and the length of no is 15 meters what is the length of po
*November 7, 2010 by emily *

**math - Calc optimization**

You are an engineer in charge of designing the dimensions of a box-like building. The base is rectangular in shape with width being twice as large as length. (Therefore so is the ceiling.) The volume is to be 1944000 m3. Local bylaws stipulate that the building must be no ...
*March 29, 2011 by J Velji*

**Algebra Grade 7**

the ratio of square H's length to square I's length is 3 : 5, if the length of square H is 18 meters, what is the perimeter of square I?
*October 9, 2012 by randomchik*

**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 ...
*August 18, 2012 by RAHEIM*

**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 ...
*February 5, 2014 by sharon*

**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...
*April 25, 2013 by Tamie*

**algebra**

A triangle has a perimeter of 161 miles. The length of each of the two shorter sides of the triangle is two thirds the length of the longest side. Find the length of each side of the triangle.
*September 15, 2014 by tor*

**math question grade 8!!**

shelby wants to paint the walls and ceiling of a rectangular room. (height:2.6cm, width:4.8cm, length:6.8cm) type of paint size of paint can cost wall paint 4L $24.95 1L $7.99 ceiling paint 4L $32.95 (one litre of paint covers 9.5 m) a) what is the least amount of paint shelby...
*December 5, 2013 by anonymous*

**oscillations**

A human wave. During sporting events within large, densely packed stadiums, spectators will send a wave (or pulse) around the stadium (Fig. below). As the wave reaches a group of spectators, they stand with a cheer and then sit. At any instant, the width w of the wave is the ...
*May 3, 2009 by chirayu*

**algebra**

The length of the base of an isosceles triangle is one fourth the length of one of its legs. If the perimeter of the triangle is 16 inches, what is the length of the base?
*October 16, 2011 by amanda*

**Trig **

The length of the base of an isosceles triangle is one fourth the length of one of its legs. If the perimeter of the triangle is 16 inches, what is the length of the base?
*June 11, 2012 by Rina *

**algebra 1**

The length of the base of a isosceles triangle is one forth the length of one of its legs. If the premimeter of the triangle is 16 inches, what is the length of the base.
*October 9, 2013 by Kayla*

**physics**

finding the acceleration of a simple pendulum g= 4pi^2 x length/T^2 T^2= 2.28 length= 70cm
*January 8, 2009 by Kayleigh*

**Math**

What is the ratio comparing the length in a drawing to the corresponding length of the object is called?
*February 9, 2011 by Lauren*

**geometry**

In the diagram, UW and VW are midsegments of triangleRST. Suppose the length of UW is 78 inches. Find the length of VS.
*January 20, 2012 by ghalia*

**geometry**

how many times the length of the diameter would divid into the length of the equator
*March 18, 2012 by Anonymous*

**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
*April 25, 2012 by Mr fluffy pants*

**math**

isosceles triangle base length 21cm and side length 32cm
*February 8, 2013 by Anonymous*

**math**

PQ is a chord of length 8 cm of a circle of radius 5 cm . The tangents at P and Q intersects at T. Find the length of TP.
*February 24, 2013 by Anonymous*

**Math**

A floor plan has a scale of 1/4 in : 5 ft. Find the length on the drawing for an actual length of 60 ft.
*April 17, 2013 by Jennifer Roberts*

**math**

the length of a rectangle is 3 times its breadth.its perimeter is 64cm.find its length?
*April 28, 2014 by Anonymous*

**Geometry**

A circle R has a radius of length 5 sqrt 3 and has a chord XY that is 5 units from R. Find the length of XY.$
*August 5, 2014 by Sheenybeany*

**physcis**

in order to determine the width of a river, a base line of 100 ft is marked off on one side. On the other side of the river is a large rock. When sighted from each end of the base line it is found that the lines of sight make angles of 60 degrees and 75 degrees, respecively, ...
*September 23, 2007 by Casandra*

**algebra**

Find the length of a side of an equilateral triangle with altitude of length 6.
*March 2, 2010 by chica*

**math**

The hypotenuse of a 30- 60- 90 triangle has length 17. What is the length of the side opposite the 60 angle?
*April 26, 2010 by mikemike*

**physics**

why is radius of the bob added to length of the string to know the length of the pendulum.
*June 1, 2010 by taker*

**math **

how to rewrite in symbols each length h in a copy 1/100 the length k in the original
*November 30, 2010 by ursula*

**math**

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

**Physics help**

Let's say you have a plot for Pendulum experiment. Let's assume g for this experiment was measured (from the slope of the plot) to be 9.78 [ms-2. The vertical intercept, however, is 0.011 [s2]. What might this translate to for a measurement of the length offset systematic in ...
*April 29, 2014 by Anonymous.*

**scales in algebra**

the actual length of the dust mite is 0.3 mm. the length of the image is 21 mm. what is the scale of the drawing?
*September 24, 2008 by amanda*

**math**

How can I solve this problem. Find the missing length of the right triangle. 7 height and 24 length
*September 25, 2008 by PJ*

**physics**

How do you determine strain and stress of a spring when given force, length, and change in length?
*December 7, 2009 by Alex*

**algebra 1**

Find the length of the hypotenuse of a right triangle whose legs are 8 and 15 units in length.
*January 4, 2010 by yelena*

**algebra**

Find the length of the hypotenuse of a right triangle whose legs are 8 and 15 units in length.
*January 6, 2010 by yelena*

**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?
*December 19, 2010 by Jesse*

**Geometry **

Find the length of the altitude of an isosceles triangle if one side has a length of 20 ft and a base of 14 ft?
*March 9, 2011 by Jay*

**geometry**

A parallelogram has sides of length 3 and 5 and a diagonal length 10. is the quadrilateral a rectangle? please explain
*March 20, 2011 by lily*

**trig**

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

**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?
*April 17, 2012 by Liz*

**geometry**

If point P is at the center of the circle, and the length of chord equals 12 inches, which is the length of the radius ?
*May 16, 2012 by Anonymous*