Wednesday

December 17, 2014

December 17, 2014

Number of results: 12,713

**Integral Calculus**

A force of 4 pounds is required to hold a spring stretched 0.1 feet beyond its natural length. How much work (in foot-pounds) is done in stretching the spring from its natural length to 0.6 feet beyond its natural length?
*October 15, 2014 by Mackenzie*

**Physics**

Four point charges of 89.67, 16.46, 12.1, and 19.76 microcoulombs are located at the corners of a rectangle of length 42 cm and width of 638 cm, as shown. A sodium ion is placed at the point halfway between 16.46 and 12.1, and then released from rest. What will be its speed ...
*January 11, 2010 by tv*

**Math**

Which of the following would require finding the area? A. Determining the number of sugar cubes in a box B. Determining the amount of paper needed to cover a bulletin board C. Determining the length of trim needed to go around the edge of a bulletin board D. Determining the ...
*January 30, 2012 by Andrew*

**math,help**

How or can someone set this up as an equation or what steps do i do? A garden area is 30ft long and 20ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400ft^2, what is the width of the path? You submitted this a few days ago along with a...
*February 3, 2007 by jasmine20*

**algebra math**

Lucas makes crosses out of a scrap piece of wood by cutting it into two pieces. He always makes the cut so that the cross piece is one-third the length of the vertical piece. If a length of scrap wood is 28 inches, what will be the length of each piece of the cross?
*March 10, 2013 by Anonymous*

**Geometry**

2.Given two segments with lengths x and y (x does not equal y), which three special parallelograms meet the three sets of given conditions? a. One diagonal has length x, the other has length y. b. The diagonals intersect at right angles. c. Both diagonals have length y and do ...
*June 24, 2014 by Isabelle*

**Algebra 1**

The minimum recommended width of the space between 6-inch by 6-inch tiles is 2^-2 inch and the maximum recommended width is 2^-1 inch. Simplify the expressions for the minimum and maximum widths of the space between the 6-inch by 6-inch ﬂoor tiles. I got 1/3 inch is is ...
*December 9, 2013 by Aaron*

**Math Help - 2 Questions**

1. The Pythagorean Theorem can be used to find distances between two points on a grid. But what about finding distances in three-dimensional space? Consider a rectangular box, which has length l, width w, and height h. What is the distance from one corner to the opposite ...
*April 30, 2014 by Josh*

**Physics**

A metal rod of length (L) moves with velocity (v), perpendicular to its length, in a magnetic field B, which is perpendicular to both the rod and its velocity. If the length of the rod is doubled, what happens to the electric field in the rod?
*October 5, 2010 by Promise*

**physics**

The moment of inertia of thin uniform rod of mass i and length L about an axis passing through a point midway between the centre and on end perpendicular to its length is --------------
*February 27, 2013 by prasad*

**Math**

The perimeter os a tennis court is 228 feet and the lenght is 42 feet longer than the width. Write a linear system. Let w be the width of the tennis court and let l be the lenght of teh tennis court. Graph teh linear system.
*March 1, 2011 by Mary*

**programming**

Application: Pendulum Clocks Pendulums used in clocks, such as grandfather clocks, keep fairly accurate time for the following reason: When the length of a pendulum is large compared with the maximum arc of its swing, the time to complete one swing is independent of both the ...
*October 4, 2012 by fatih*

**math**

Disks of radius 4 cm are cut from a rectangular plastic sheet of length 84 cm and width 24 cm. How many complete disks can be cut out? Find (a) the total area of the discs out (b) the area of sheet wasted I did it but the answers on the back of the book do not match heres what...
*February 15, 2013 by Mathew*

**Thermodynamics**

Calculate the amount of expansion occurring when a steel rail 920.000 meters in length is heated from -10.000 to 410.000 degrees Celsius. ANS = m Steel = 12 * 10 ^-6 = 0.000012 Change in length = Original length * Coefficient of linear expansion * Temperature rise. = 920m * 0....
*July 4, 2013 by Danny*

**geometry**

A sandpit in the shape of a rectangular prism has length 7 feet, width 5 feet, and height 1.75 feet. It is filled to the brim with sand. Joe puts this sand into a second sandpit having the same shape but a larger base. He needs 17.5 cubic feet of sand to fill the extra space ...
*April 2, 2012 by Jack*

**Geometry **

A sandpit in the shape of a rectangular prism has length 7 feet, width 5 feet, and height 1.75 feet. It is filled to the brim with sand. Joe puts this sand into a second sandpit having the same shape but a larger base. He needs 17.5 cubic feet of sand to fill the extra space ...
*April 4, 2012 by Frank*

**8th Grade Algebra**

To find the image length, of a 4-foot-tall object in a spherical mirror with a focal length of 2 feet, L=4(2/o-2)^2 can be used, where 2 is the distance, in feet, of the object from the mirror. What is the image length of the object when it is 1.5 feet away from the mirror?
*August 22, 2008 by Anonymous*

**Precalculus**

There are 4 rectangular corrals of identical dimensions along the back wall of an existing barn using 200 ft of fencing. The diagram has 4 rectangular corrals attached together but fencing is not needed on the back wall of the barn. The barn is above the 4 rectangular corrals...
*October 5, 2012 by Cole*

**11th grade**

Four point charges of 89.67, 16.46, 12.1, and 19.76 microcoulombs are located at the corners of a rectangle of length 42 cm and width of 638 cm, as shown. A sodium ion is placed at the point halfway between 16.46 and 12.1, and then released from rest. What will be its speed ...
*January 11, 2010 by tv*

**Probability**

Automated chemical synthesis of DNA has made it possible to custom-order moderate length DNA sequences from commercial suppliers. Assume that a single nucleotide weighs about 5.6 X 10^-22 grams and that there are four kinds of nucleotides. If you wish to order all possible DNA...
*January 16, 2012 by Erica*

**math(help)**

for questions 1-2,estimate the sum or difference.use the benchmarks 0,1/2,and 1. 1.23/40-9/30 A.0 B.1 C.1/2 2.simone measures the width of one cardboard strip as 1/2 yd.a second cardboard strip measures 5/6 yd in width.estimate the combined width of the cardboard strips. A....
*November 26, 2013 by darla*

**pre-calculus**

Express the edge length of a cube as a function of the cube's diagonal length d. Then express the surface area and volume of the cube as a function of the diagonal length.
*January 12, 2014 by Christy*

**math please help**

The following data represent the asking price of a simple random sample of homes for sale. Construct a 99% confidence interval with and without the outlier included. Comment on the effect the outlier has on the confidence interval. Here is the information: $177,500 $279,900 $...
*December 7, 2014 by LADO*

**Math,Ratio**

the length of a rectangle is 6times as long as its breadth. a.) what fraction of the perimeter of the rectangle is the length of the rectangle? b.) find the ratio of the length of the rectangle to its breadth and to its perimeter. c.) if the perimeter of the rectangle is 342....
*December 26, 2011 by Da S*

**Math**

Chris has a square garden with an area of 38.a m squared. He decreases the length of each side by 1.7 m to make a smaller garden. What is the perimeter of the smaller garden. {Hint find the length of each side of the bigger garden first, then decrease the length, then find the...
*November 5, 2014 by Cindy*

**Math**

Chris has a square garden with an area of 38.4 m squared. He decreases the length of each side by 1.7 m to make a smaller garden. What is the perimeter of the smaller garden. {Hint find the length of each side of the bigger garden first, then decrease the length, then find the...
*November 5, 2014 by Brianna*

**Math**

Chris has a square garden with an area of 38.4 m squared. He decreases the length of each side by 1.7 m to make a smaller garden. What is the perimeter of the smaller garden. {Hint find the length of each side of the bigger garden first, then decrease the length, then find the...
*November 5, 2014 by Anonymous*

**Data Management - 12**

The length of sunfish in Grenadier pond are normally distributed with a mean of 15cm. Find the standar deviation to one decimal place. If 91% of these fish have a length less than 17.7 cm.
*March 24, 2009 by Mike*

**Data Management**

The length of sunfish in Grenadier pond are normally distributed with a mean of 15cm. Find the standar deviation to one decimal place. If 91% of these fish have a length less than 17.7 cm.
*March 25, 2009 by Kyle*

**physics**

Take the length of a trombone to be 275 cm in the first position. How far does the slide have to be moved to lower the pitch one semitone? [Remember that the length is increased by twice this amount.]
*December 9, 2009 by Anthony*

**physics**

the moment of inertia of a thin uniform rod of mass M and length L about an axis passing through a point midway between the centre and one end perpendicular to its length is -----------------------------------
*February 26, 2013 by maheshwari*

**physics conclusion**

im not quite sure what to write for my conclusion for this physics experiment. The aim is to record measurements and carry out calulations with the correct number of figures. We had to take a brass rod and measure its width with vernier calipers which was 19.0 mm and its ...
*March 10, 2007 by San*

**Math**

Manuel wants to build a rectangular pen for his animals. One side of the pen will be against the barn; the other three sides will be enclosed with wire fencing. If Manuel has 750 feet of fencing, what dimensions would maximize the area of the pen? a) Let w be the length of the...
*September 2, 2014 by Jason Q.*

**physic**

Hooke's law describes a certain light spring of unstretched length 30.0 cm. When one end is attached to the top of a door frame, and a 8.40-kg object is hung from the other end, the length of the spring is 40.00 cm. (a) Find its spring constant. ____ kN/m (b) The load and the ...
*October 21, 2009 by Chan*

**math**

an open-topped box can be made from a rectangular sheet of aluminum, with dimensions 40 cm by 25 cm, by cutting equal-sized squares from the four corners and folding up the sides. Declare your variables and write a function to calculate the volume of a box that can be formed. ...
*March 25, 2014 by Anonymous*

**MATH**

(5 pts) The length, X, of a fish from a particular mountain lake in Idaho is normally distributed with \mu = 9.7 inches and \sigma = 1.7 inches. (a) Is X a discrete or continuous random variable? (Type: DISCRETE or CONTINUOUS) ANSWER: (b) Write the event ''a fish chosen has a ...
*February 5, 2014 by Violet*

**Math**

A triangle has a perimeter of 35inches. The length of side a of the triangle is twice the length of side b. Side c is 5inches longer than side a. What is the length of each side of the triangle?
*September 13, 2011 by Bobbi*

**Geometry**

What is the radius if: degree of measurement of arc=30 length=1/3xy(pi) My answer was 8xy. degree of measurement of arc=40 length=8/9(t)(pi) My answer was 9t. degree of measurement of arc=18 length=6(y)pi My answer was 45y. These are the questions I missed, along with my ...
*June 14, 2010 by Temperance*

**algebra scales**

the actual length of the dust mite is 0.3 mm. the length in the image is 21 mm. what is the scale of the image? i dont know what propotion to use!!
*September 24, 2008 by amanda*

**math**

points a,b,c,and d lie on a straight line in the given order. AC = 25 cm and BD = 46 cm. The ratio of length AB is 5/2. Find the length of line segment BC in cm
*October 6, 2010 by jani*

**bunn high**

find the approximate length of the leg of a right triangle with one leg length 8 and hypotenuse lenth 19
*July 7, 2011 by Hope*

**Math word problem**

The length&breadth of a rectangle are (x+5)cm&3cm respectively.Find the length if the area of the rectangle is 42 cm2.
*October 4, 2011 by kimi*

**precalculus- ellipses **

Consider the ellipse y^2=1-6 x^2. Its vertices are (0,A) with A= ? its foci are (0,+/-B) with B= ? its eccentricity is ? the length of its major axe is ? the length of its minor axe is ?
*May 4, 2013 by dylan*

**math**

a pentagon has a perimeter of 50 cm. the shortest side has a length of 3 cm. find the length of a similar pentagon if the perimter of the second penatgon is 80 cm ?
*September 25, 2013 by dustin*

**Geometry**

The length of each side of a rhombus is 16. The longer diagonal has length 26. Find the measures of the angles of the rhombus to the nearset degree.
*September 30, 2013 by George*

**Science**

What should be the focal length of a double concave length 60 that an object placed 25 cm from it will produce 3/4 times large as the object?
*July 23, 2014 by Lyra*

**math**

the length of a table is 6 feet. On a scale drawing, the length is 2 inches. Write three possible scales for the drawing.
*October 1, 2014 by brendan*

**Geometry **

The length of a table is 6 feet on a scale drawing the, length is 2 inches write three possible scales for drawing
*October 19, 2014 by Maria *

**Math - please double check me**

There are 42 accounting classes with 31 students in each class. Estimate the total number of students in the accounting classes. a. 1200 b. 900 c. 1600 d. 1500 answer: c One kilometer is equal to 1000 meters. What fractional part of a kilometer is 500 meters? Simply your ...
*March 28, 2008 by Sonya*

**Physics**

A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 16°C when it was installed. What is its change in length when the temperature drops to a frigid -39°C? m
*April 4, 2008 by Will*

**Physics**

A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 16°C when it was installed. What is its change in length when the temperature drops to a frigid -39°C?
*April 6, 2008 by Happy*

**Physics**

A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 16°C when it was installed. What is its change in length when the temperature drops to a frigid -39°C?
*April 6, 2008 by Mitch*

**Math **

I don't know how to explain this but for the arc length of a circle A and B like the outer length A and B is it equal to the angle O ? and also how is " " half the amount of the angle O?
*October 10, 2010 by Amy*

**math **

how to rewrite rule in symbols: At a certain time of day,the length of a shadow s cast by an object is twice the length of the object L
*November 30, 2010 by ursula*

**physics**

a convex lens of focal length 30cm is cut half perpendicular to its principal axes what is its new focal length
*December 28, 2010 by sehrish*

**physics**

AHHHHHH Help!! Mass on string of unknown length oscillates witha period of 6.0s What if string length is doubled? amplitude dbl?
*February 27, 2011 by pam*

**math/ geometry.**

the vertex angle of an isoceles triangle is 120. the base length is 18. what is the length of the altitude to the base in simplest form
*March 19, 2011 by Juleana*

**GEOMETRY**

Show how to construct a triangle given the length of one side, the size of an adjacent angle and the length of the median from that angle
*March 30, 2011 by Zahra*

**math**

What is the side length of a square with an area of 40cm squared?Measured with a ruler, this side length is between what 2 consecutive whole cm?
*September 23, 2011 by Anonymous*

**algebra**

please write algebraic equation and solve thanks length of movie projected at 24 frames per second ; length(L)=24 f. solve for f
*December 2, 2011 by ann*

**physics**

The first resonant length of a closed air column occurs when the length is 30.0cm . What will the second and third resonant lengths be
*June 5, 2012 by Melissa*

**Geometry**

If the size of a rectangle's area is twice as large as the size of it's perimeter, and the length of one of its sides is 4.5, what is the length of the other side?
*August 22, 2012 by John*

**physics**

A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 22° C when it was installed. What is its change in length when the temperature drops to a frigid -37° C?
*July 25, 2013 by Daniel*

**physics**

A steel section of the Alaskan pipeline had a length of 65.9 m and a temperature of 21.4 °C when it was installed. What is its change in length when the temperature drops to a frigid -43.3 °C?
*November 25, 2013 by Anonymous*

**physics**

A steel section of the Alaskan pipeline had a length of 65.1 m and a temperature of 15.8 °C when it was installed. What is its change in length when the temperature drops to a frigid -31.2 °C?
*November 30, 2013 by Bob*

**Calculus/Physics **

It took 1800J of work to stretch a spring from its natural length of 2m to a length of 5m. Find the spring's force constant.
*May 2, 2014 by Tim*

**maths**

Two tangents XY and XZ are drawn from a point X to a circle with center W.If the length of XZ is 156 and the length YZ is 120,find the radius of the circle.
*September 6, 2014 by Nitumoni*

**math**

The length of a piece of paper is 8.5 inches. Using scissors, you reduce the length of the paper to 4.25. What is the scale factor of the dilation? A- 1/4 B- 1/2 C- 2 D- 4 I think its A ?
*December 11, 2014 by jasmine*

**math**

find the length of a line segment with endpoints (4, -3) and (-2, -1) The general formula is Length = sqrt[(x2 - x1)^2 + (y2 - y1)^2] In your case, that is sqrt [(-6)^2 + (-2)^2]= ...?
*March 2, 2007 by Michael*

**Physics -Spring Momentum**

A spring has a relaxed length of 6 cm and a stiffness of 50 N/m. How much work must you do to change its length from 8 cm to 11 cm?
*October 1, 2010 by Mayo*

**math 050**

Jim has two boards, each with a length of 51/4 inches. If he lays them end to end, what will the total length be?
*November 11, 2010 by Anonymous*

**geometry**

the perimeter of a square lot is seven times the length of a side, decreased by 12. fine the length of a side.
*January 17, 2011 by renolo alfredo*

**MATH**

The length of a walking trial is 2,104 meters. 1 meter=3.28 feet What is the length of the trial to the nearest foot?
*December 29, 2011 by Daylon*

**Physics**

The hypotenuse of a right triangle is 29.0 centimeters. The length of one of its legs is 20.0 centimeters. What is the length of the other leg?
*February 22, 2012 by Lauren*

**student**

an average length of 2 inches and a standard deviation of .005 inches. What is the 95% confidence interval for the length of these screws?
*March 26, 2012 by mark*

**Geometry**

A square has a side length of 95. What is the length of the diagonal of the square? Express your answer in simplest radical form.
*April 10, 2012 by Cassie*

**Math**

the perimeter of an equilateral triangle is 50 inches longer than the length of one side. What is the length of one of the sides?
*June 18, 2012 by Amanda*

**Math**

What is the maximum number of nonoverlapping squares with sides of length 3 that will fit inside of a square with sides of length 6?
*August 10, 2012 by Christina*

**Math**

the length of a living room floor in a scale drawing is 8 inches the actual length is 20 feet what is the scale
*September 21, 2014 by Amber*

**TRIANGLE**

length of AB,BC of scalene triangle ABC are 12,8 rerspectively.the size of angle is 59degree.find the length of side AC
*September 25, 2014 by PUNAM*

**math just practice **

Sr = SQUARE ROOT 1. What is the solution to -75 sr to the nearest integer? (1 point) 9 8 -8 -9 2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block? (1 point) 1 foot 2 ...
*October 28, 2014 by yea*

**Algebra 1**

The minimum recommended width of the space between 6-inch by 6-inch tiles is 2^-2 inch and the maximum recommended width is 2^-1 inch. Simplify the expressions for the minimum and maximum widths of the space between the 6-inch by 6-inch ﬂoor tiles.
*December 9, 2013 by Anonymous*

**Math**

A microscopic organism is shown in a biology book with the length of 5.6 centimeters. If the scale of the picture is 2000:1, find the actual length of the organism.
*October 30, 2007 by Mike*

**Geometry HELP**

In a rhombus, one diagonal has a length of 10 cm and the area is 120 cm2. Find the length of one side. a.)10cm b.)12cm c.)13cm
*June 12, 2010 by Ariel*

**Physics**

Where do I find the answer of: What affects the length of a bridge, ie. cross sectional area, construction material, change in temperature or the length of the bridge?
*June 27, 2010 by Rebecca*

**Calculus**

It took 1800 J of work to stretch a spring from its natural length of 2m to a length of 5m. Find the spring's force constant. Please help. Thanks in advance.
*March 8, 2012 by JEUCD 37*

**Trigonometry**

You are given a right triangle. The Opposit side length is 7 and the hypotenuse length is 9. What is the degree of the bigger angle? (The one closest to the 90* angle)
*April 17, 2012 by Unique*

**Trigonometry**

You are given a right triangle. The Opposit side length is 7 and the hypotenuse length is 9. What is the degree of the bigger angle? (The one closest to the 90* angle)
*April 17, 2012 by Unique*

**math**

susanna stated that the length of her desk is 135.2cm. what range would you expect the actual length of the desk to fall within.
*May 6, 2012 by jesus*

**Geometry**

The length of the longer leg of a 30-60-90 triangle is 24 feet. How do I find the length of the hypotenuse of the triangle? The answer must be a radical in simplest form.
*May 23, 2012 by Bonnie*

**Math**

screen sizes (TVs, computers) are given by measuring the length of the diagonal. If the base length of a 40-inch TV is 32", what is the surface area of the TV screen?
*September 28, 2013 by Evelyn*

**statistics**

Using the average and standard devation for length variable from problem 3,find the probability that the length of 35 movies is less than 120 minutes. Assume the distribution is normally distributed. interpret your result.
*February 27, 2013 by kat*

**math**

What's the minimum. length of the arc on the cicumference of the earth,where a curvature of the horizon is appearent? OR---What's the max.length of cord,drawn on the cicumference of the earth,where length of the cord appears same as arc? Follow up 2nd question---At what ...
*February 6, 2011 by mike*

**Math**

In rhombus DEFG, if m<DEF=60, and the shorter diagonal DF has a length of 7, find the length of the side of a rhombus.
*March 5, 2010 by Chris*

**geometry**

Find the length of the altitude to the base of an isosceles triangle if the length of one leg is 17 and the base is 16.
*March 7, 2011 by Anonymous*

**algebra**

Which inequality best represents the problem? The length of a rectangle is (x - 2) and its height is 67. The length is less than the height.
*March 21, 2012 by natily*

**calc arc length**

Find the length of the arc along f(x) = integral from 0 to x^3 sqrt(cos t) dt on the set of x [0, pi/3].
*December 19, 2012 by Liz*

**Algebra -Please help me**

an equilateral triangle has a side of length 2x-3. Its perimeter is 51 inches, find the length of each side
*September 30, 2013 by Jimmy*

**math**

on a map, the length of a nature center trail is 9.5 cm. if the scale is 2 cm to 14 kilometers, what is the actual length of the trail.
*February 24, 2014 by magen*

**math**

the legs of an isosceles triangle have lengths x+1 and -x+7. the base has length 3x-3. what is the length of the base? a. 6 b. cannot be determined c. 4 d. 3
*March 9, 2014 by Leigh*

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