Tuesday

July 29, 2014

July 29, 2014

Number of results: 30,773

**Math**

14. a. A Restaurant is open 24 hours a day. The manager wants to divide the day into work shifts of equal length. The shifts should not overlap, and all shift durations should be a whole number of hours. Describe the different ways this can be done.
*September 18, 2012 by Gracie*

**math**

a resturant is open 24 hours a day. T he manager wants to divide the day into work shifts of equal length. The shifts should not overlap. All shift durattions should be a whole number of hours. Describe the different ways this can be done.
*September 25, 2013 by milagros*

**algebra **

The length of a rectangle is 6 cm more than four times the width. If the perimeter of the rectangle is 42 cm, what are its dimensions? a. length = 18 cm; width = 3 cm b. length = 18 cm; width = 9 cm c. length = 6 cm; width = 9 cm d. length = 3 cm; width = 18 cm
*January 20, 2011 by tiffany*

**PHYSICS**

what does it mean to be outside the focal point of a converging mirror?
*April 6, 2010 by LU*

**Physics**

What is a mirror ( reflective surface and back) made out of?
*May 2, 2010 by Emily*

**Science**

What does a mirror or any shinny object do to light? Is the answer reflect
*January 31, 2011 by Anonymous*

**Physics**

why the ray reflected by the prism is brighter than that by the plane mirror?
*November 15, 2011 by demolitrate*

**science**

Silvering of mirror is done by a) AgNO3 b) Ag2O3 c) Fe2O3 d) Al2O3
*June 19, 2013 by raul*

**physics**

Can a plane mirror ever form real image?
*July 15, 2013 by Ritesh chaudhari*

**math help**

A Certain type of board is sold only in length of multiples of 2 feet from 6 ft to 24 ft. A builder needs a large quantity of this type of board in 5 1/2 foot lengths for minimum waste. The lengths in feet to be ordered should be (A) 6 (B) 12 (C) 16 (D) 18 (E) 22 (F) 24 not ...
*August 8, 2013 by Tomas*

**Math**

Towns A to F are to be connected by cable along existing roads. Need to figure the minimum length of cable required. Eash town must be connected to at least one other town. Distances are in miles. A-B 20, A-E 71, A-F 38, B-A 20, B-C 58, B-E 62,C-B 58, C-D 17, C-E 42, D-C 17, D...
*March 16, 2014 by Cassidy*

**physics multiple choice**

A force F is required to push a crate along a rough horizontal floor at a constant speed V with friction present. What force is needed to push this crate along the same floor at a constant speed 3V if friction is the same as before? A. A constant force 3F is needed. B. A force...
*February 2, 2011 by mely*

**physics multiple choice**

A force F is required to push a crate along a rough horizontal floor at a constant speed V with friction present. What force is needed to push this crate along the same floor at a constant speed 3V if friction is the same as before? A. A constant force 3F is needed. B. A force...
*February 2, 2011 by andrea*

**College Algebra**

I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
*January 19, 2013 by Krissy*

**College Algebra **

I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
*January 21, 2013 by Krissy *

**Algebra**

The formula b=26a is used in New England to estimate the minimum furnace output, b, in BTU's, for a modern house with a square feet of flooring. What is the minimum furnace output? what is a? HOW DO I FIND THESE QUESTIONS OUT?
*March 15, 2010 by Anonymous*

**math**

Suppose the area of a rectangle is 36 square inches. Find the Minimum perimeter for a rectangle with this area. Please help asap. Thank you! (so much) We know that A=l*w=36 and P=2(l+w) From the area formula we see that l=36/w Putting this into the perimeter formula we get P=2...
*August 31, 2006 by l*

**maths-urgently needed**

ABCD is a square with length of each side 1cm. An octagon is formed by lines joining the vertices of the square to the mid points of opposite sides. Find the area of the octagon?
*February 5, 2013 by Anonymous*

**Math**

An extension ladder adjusts in length from 10 ft to 16 ft. Suppose you've leaned your ladder against your house sot that, at its minimum lenght, it touches the base of your first floor window, 9 feet above the ground. Without moving the base, how high will the ladder reach ...
*March 24, 2009 by Suz*

**physics**

A spring has k=88 N/m. create a graph and use the graph to determine the work needed to stretch the spring from x = 4.1 cm to x = 5.8 cm, where x = 0 refers to the spring's unstretched length.
*January 2, 2012 by Anonymous*

**PHYSICS!!!**

if the same ball rolls down from three different length trackways with a 20degrees elevation, its acceleration on the short-length trackway is 1.08m/s^2;its acceleration on the medium-length trackway is 1.79m/s^2;and its acceleration on the long-length trackway is 1.52m/s^2. ...
*November 1, 2006 by Katrina*

**Physics **

Tom the train and Dan are involved in an elastic collision. A 2.5 kg Tom is, at rest but is approached head-on by a 5.0 kg Dan moving at 0.60 m/s. The force-separation graph for the ensuing collision is given: the picture of the graph is found here: i54.tinypic (dot) com/...
*March 25, 2012 by Nick*

**Word problem**

10 men are fishing in a row boat. The center is empty. The 5 men need to swap places. A man can move to his seat if it is empty or step over one person to an empty seat what are the minimum moves needed for the five men to swap places. My answer is 25
*September 17, 2013 by Lucky*

**phyisics**

A computer to be used in a satellite must be able to withstand accelerations of up to 23 times the acceleration due to gravity. In a test to see if it meets this specification, the computer is bolted to a frame that is vibrated back and forth in simple harmonic motion at a ...
*November 15, 2011 by christi*

**Gr. 9 Math (continued)**

I don't see a problem but I will rewrite the structure. Make two rectangles attached together. Call the first rectangle ABHG (AG top, BH bottom). Call the second rectangle GHCD (HC top, GD bottom). Draw a horizontal line from line AB to line GH and name the points E on line AB...
*December 12, 2010 by olav*

**math**

I am confused: if the math problem is asking me for the proceeds of$ note at a % discount for # of months. the anwser is the whole total or the earned. I think is the whole total with the discount. 2. math problem ask for the amount of interest on $ invested for yrs at %, ...
*August 27, 2006 by Haydee*

**physics**

A 4.0-kg block is stacked on top of a 12.0-kg block, which is accelerating along a horizontal table at a = 5.2m/s2 . Let u=uk=us. (a) What minimum coefficient of friction u between the two blocks will prevent the 4.0-kg block from sliding off? (b) If u is only half this ...
*November 20, 2012 by Anonymous*

**physics**

A steel rod of length 4 m is welded to the end of an aluminum rod of length 3 m (lengths measured at 23 °C). The combination rod is then heated to 198 °C. What is the length of the combination rod at 198 °C? (The linear expansion coefficients for steel and aluminum are 1.3 10-...
*April 4, 2012 by sima*

**math**

complete the table that shows the length of the chain formed when rings are liked in a staright line 1)number of rings 1 length of chain 16mm 2)number of rings 2 length of chain 30m 3)number of rings 3 length of chain 44m 4)number of rings 6 length of chain ( ) 5)number of ...
*May 19, 2008 by marcus*

**English**

I urgently need you to see if the sentence is OK now. Thank you!! 1) Moreover, this particular bacterium can survive in presence of arsenic and, therefore, won't die until its action of purification is completed. 2) This method is inexpensive and affordable even for those ...
*February 15, 2012 by Henry2*

**chemistry**

what is the number of grams needed to prepare a 1.23 M solution of nitric acid if 250.0 mL are needed?
*May 19, 2011 by Anonymous*

**Chemistry help needed**

How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
*September 15, 2013 by Kris*

**Chemistry..**

A chemical engineer calculated that 15.0 mol H2 was needed to react with excess N2 to prepare 10.0 mol NH3. But the actual yield is 60.0% . Write a balanced chemical equation for the reaction. Is the amount of H2 needed to make 10.0 mol NH3 more than, the same as, or less than...
*January 2, 2013 by Anonymous*

**Calculus**

A rancher wants to build a rectangular pen with an area of 150 m^2? a. Find an equation for the perimeter P in terms of W and L . b. Use the given area to write an equation that relates W and L . c. Find the pen dimensions that require the minimum amount of fencing. Width = ...
*May 29, 2013 by Leslie*

**physics **

A nearsighted person has a far point located only 200 cm from his eyes. Determine the focal length of contact lenses that will enable him to see distant objects clearly. does anyone have any suggestion on how to tackle this problem?
*December 6, 2012 by Alex*

**biology**

What connections can you identify between the metric units for length and volume length x length x length = cubic length. That is cm x cm x cm = cubic centimeters or m x m x m = cubic meters. That is length used to measure the sides will provide a volume. That is why volume ...
*September 25, 2006 by wow*

**math**

what is the factorial of a negative number? The factorial function has singularities at the negative integers. You can see this as follows. For integers we define: (n+1)! = (n+1)n! and we put 0! = 1 So, from 0! you can compute 1! and from that you can compute 2! etc. etc. So, ...
*July 10, 2007 by chris*

**marketing**

Select at minimum 3 major types of tests (examples include cognitive abilities, motor and physical abilities, personality & interests, and achievement tests, work sampling, etc) and discuss the legal and ethical implications you see with each test. What specific employment ...
*April 1, 2010 by Tammi Seibert*

**College Algebra help please**

I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each denominator. Assume all ...
*January 20, 2013 by Krissy*

**Math**

The length of one leg of a right triangle is 8ft. The length of the hypothenuse is 2feet longer than the other leg. Find the length of the hypothenuse and the other leg. The length of the hypothenuse is _______ ft. The length of the other leg is ___________ft.
*February 20, 2014 by Pam*

**physics**

what is the minimum riding speed needed to be able to hear the whistle? Remember, you can assume the following things: The whistle you use to call your hunting dog has a frequency of 21.0 kHz, but your dog is ignoring it. You suspect the whistle may not be working, but you can...
*March 4, 2013 by taylor*

**Math Help**

The length of an object in feet is equal to 3 times its length in yards. The length of a waterslide is 48 feet. Write and solve a multiplication equation to find the length of the waterslide in yards.
*January 30, 2012 by Anna*

**Music Physics**

The clarinet's lowest note is D3, 147 Hz. What is its effective length, that is, the length of an idealized closed pipe that has this frequency for its first mode? Explain why this is less than the actual length of the instrument?
*April 19, 2012 by AAA*

**math**

Which of the following are true of ordinary whole-life insurance policies? 1. The insured pays premiums on this type of insurance until his death. 2. Ordinary whole life insurance covers the insured for the states term of the policy. 3. The insured only has to pay on this type...
*January 12, 2010 by Matt*

**ALGEBRA HELP**

The perimeter of a rectangle is 60cm. The length (L) of the rectangle can be represented by (2x-7). What are the dimensions? A) length=10 width=14 B) length=6 width=18 C) length=9 width=15 D) length=10 width=1 or 15
*October 21, 2013 by cv*

**Finance**

If a corporation wanted to guarantee its long term costs of financing an investment project, it could: a.) sell t-bill futures for when the funds were needed b.) buy t-bill futures for when the funds were needed c.) sell t-bond futures for when the funds were needed d.) buy t-...
*April 28, 2010 by Sam*

**math**

reason which is greater the greatest whole number with 05 digits or the least whole number with 06 digits
*September 19, 2012 by gabriel*

**Geometry**

ABC is an obtuse triangle with m<A=21 and <C is acute. a)What is m<B+m<c? B)What is the range of whole numbers for m<C? C)What is the range of whole numbers for m<B?
*July 26, 2013 by Chelsey*

**ELA**

Christine scarfed that whole bag of chips herself what is another way of saying scafed wit out using slang Did she steal them? Did she grow them? Did she step on them? Did she twirl them in her hair? What did she do with those chips? ?? the diffigult thing is that it doesn't ...
*December 13, 2006 by Juan*

**Math**

Basil the bumbling magician has done it again. Instead of pulling a rabbit out of a hat he pulled out rather smelly, ill tempered warthog. For now, he is keeping " Princess" in a cage with a volume of 27 cubic meters. If the sides are in whole meters only and the width is 3 ...
*August 11, 2011 by Cortez*

**Physics**

You are standing 0.75 m from your bathroom mirror in the morning. How far away is your image from you?
*November 14, 2010 by Laura*

**Physics(light)**

why the ray reflected by the prism is brighter than that by the plane mirror?
*November 15, 2011 by demolitrate*

**physics**

A cook holds a 2.66-kg carton of milk at arm's length (see the figure below). What force B must be exerted by the biceps muscle? (Ignore the weight of the forearm. State the magnitude of the force B.)
*November 11, 2012 by sarah*

**Advanced Math**

Find the maximum and minimum values of f(x,y)=3x+y for the polygonal convex set determined by x>or equal to 1, y>or equal to 0, and x+0.5y<or equal to 2. I worked it out and got Maximum: 6; and Minimum: 3. Is that right?
*November 3, 2009 by Briana*

**physics**

Using the data below, suggest a proportionality statement. Length (cm) Frequency (Hz) 100 0.46 80 0.52 60 0.62 40 0.74 20 1.01 I think it's f ¡Ø 1/¡Ìlength (one over square root of length) or is it l ¡Ø 1/f^2 By the way, the length is the controlled variable.
*February 18, 2008 by william*

**Physics**

A large ant is standing on the middle of a circus tightrope that is stretched with tension T_s. The rope has mass per unit length mu. Wanting to shake the ant off the rope, a tightrope walker moves her foot up and down near the end of the tightrope, generating a sinusoidal ...
*January 9, 2009 by Sam*

**IB Math**

If AB is the same length as CD, BC is 2 cm shorter than AB and BE is 7 cm in length, find the length of AB.
*October 27, 2010 by Victoria*

**geomtry**

EF is a median of trapezoid ABCD. The length of AB is 12, and the length of CD is 18. What is the length of EF?
*November 11, 2010 by Anonymous*

**college physics**

a large cuckoo clock has a pendulum with a period of 1.0 sec. The clock loses 10 min a day. how would you fix it? (Hint: change l) a. Find the length l of the pendulum. b. How much adjustment in l, up or down, is needed?
*December 11, 2012 by Kpang*

**English**

1. Did you see the pictures in my homepage? 2. Did you see the pictures on my homepage? 3. Did you see the pictures over my homepage? 4. Did you see the pictures through my homepage? (Which prepositions can we use? Are they all grammatical?)
*September 12, 2010 by rfvv*

**Advanced chem**

A rectangular block of wood is 40cm wide, 60cm long and 30cm deep. If its relative density is 0.7 and it floats with its 30cm side verticle, determine: (a)the length of the block above the water surface and (b)the minimum force required to completely submerge the block. Please...
*April 6, 2012 by Momito*

**General**

How come when someone asks a question others cant look at their question... all i see is the name of the person the subject and teacher of that subject!:( I tried to click on it to see the question and poof!!!! NOTHING btw wheres my question We can see them. Something is wrong...
*January 9, 2007 by Justine*

**Calc**

A car is moving at 40 mi/h along a straight line when the driver sees a light turn red. She hits the brakes when she is 100 ft from the light and decelerates at the rate of 16 ft per second squared. How far does she travel before stopping? Choose the whole number that is ...
*January 20, 2013 by Sean*

**math**

A small business just leased a new computer and color laser printer for three years. The service contract for the the computer offers unlimited repairs for a fee of $100 a year plus a $25 service charge for each repair needed. The company's research suggested that during a ...
*January 1, 2008 by clarence*

**Chemistry - help needed**

In titrations involving sodium thiosulphate and potassium iodide, is it necessary to use starch solution to help us see the end point? If the colour change from yellow to colourless is easily visible, is it acceptable not to use the starch solution?
*February 22, 2011 by janice*

**algebra help please**

The area of a rectangle of length x is given by 3x^2+5x find the width of the rectangle a=l*w =x*(3x+5) I stoped here I am not sure if I am correct i was taken the 3x+5 as the width and x as the length but i am not sure if the 3x+5 should be the area and divid by x the length ...
*April 24, 2007 by larry*

**English**

Posted by John on Thursday, December 18, 2008 at 9:21pm. We see a movie at a movie theater. We see a play at a theater such as the Joe's theater. Can you see a movie at a theater? English - Writeacher, Thursday, December 18, 2008 at 10:24pm Are you asking if all the sentences/...
*December 18, 2008 by John*

**Math**

A cylinder with a radius of 7cm has a capacity of 23000 cm3. a)What is the length/height of the cylinder? b)This cylinder is used to carry water underneath a road. How many cylinders are needed if the road is 500m long?
*December 3, 2013 by Gia*

**Physics**

A 20-kg child sits on a see saw on the playground, 3.0 m from the pivot. A 2nd child is seated on the other side of the pivot and 2.00 m from the pivot. The mass of the second child needed to lift the first child off the ground is
*October 28, 2013 by Mikhail*

**chemistry**

a student needed 1000 ml of a 0.10 buffer of ph 4.0. calculate the amount of sodium acetate and acidic acid needed for this solution
*April 20, 2010 by bay*

**manufacturing**

In looking over the blueprint of a job, you see that 1/4" represents 1 foot. If the garage length is 28 feet, and the width is 16 feet, what would be the dimensions on the blueprint in inches?
*January 24, 2012 by Anonymous*

**Chemistry**

1. What is the minimum volume of hot water needed to dissolve 0.200g phenacetin? How much phenacetin will remain in that volume of water once it cools? 2. Why is it important that all the solid dissolves in the hot solvent, before the solution is cooled? 3. How would you ...
*September 24, 2012 by Cassie*

**math**

A whole brick is balanced with ¾ pound and ¾ brick. What is the weight of the whole brick?
*October 12, 2011 by unknown*

**math**

A whole brick is balanced with 3/4 pound and 3/4 brick. what is the weight of the whole brick?
*October 26, 2012 by dell*

**Calculus**

2. Determine the minimum value of the function f(x)= e^(-x) - 2e^x on the interval -1≤x≤2. Answer is minimum value 7.12?
*March 6, 2012 by Jessica*

**Pre Calculas**

Complete the identity sin theta / cos theta + cos theta / sin theta = ? Do you mean (sin theta/cos theta) + (cos theta/sin theta) ? That would equal tan x + cot x = tan x + (1/tan x) = (tan^2 x + 1)/ tan x I don't see any way to further simplify it. 1/(cosx)(sinx) or sin^2x+...
*June 10, 2006 by Robert*

**U.S. Politics**

Hi, I'm back again. You might see me post some questions from time to time over my summer holidays, but it's not about homework. I am willing to learn a few things over the break. Anyways, what is an electoral vote that is needed for a U.S. presidental candidate? I'm a bit ...
*June 28, 2010 by AL 92*

**Math**

Consider every whole number area from 2 square units to 30 square units. For which of these areas is there only one rectangle with whole number side lengths?
*March 7, 2011 by jacob*

**Math**

Consider every whole number area from 2 square units to 30 square units. For which of these areas is there only one rectangle with whole number side lengths?
*March 7, 2011 by jacob*

**Math**

Consider every whole number area from 2 square units to 30 square units. For which of these areas is there only one rectangle with whole number side lengths?
*March 7, 2011 by jacob*

**Math - Polygons and Quadrilaterals**

A rectangle has a diagonal of length 125. If the ratio fo the length of the short side to the length of the long side of the rectangle is 7:24, what is the length of the shorter side of the rectangle?
*September 10, 2013 by Venus*

**Math**

3yd_______________________ 4yd|__|___|___|___|___|___| |__|___|___|___|___|___| A community garden is sectioned off into 12 congruent individual plots with rope as shown in the diagram. Find the total length of rope used. Then find the total length of rope needed if the ...
*April 20, 2011 by Matty*

**physics**

Suppose an object is placed at a distance x from a screen and a converging lens of focal length f is placed between the object and the screen. What is the minimum separation distance x (in terms of f) for a real image to be formed on the screen? Support your answer with either...
*May 19, 2014 by Josh*

**math**

A classroom is 10 yards long.THE floor is being tiled with new tiles that are each 10 inches long.HOW MANY TILES ARE NEEDED TO MAKE 1 ROW the length of the classroom
*November 16, 2011 by reeree*

**Physics**

How can you use a curved mirror to make a telescope? If possible, if there a diagram somewhere?
*March 25, 2008 by TP*

**Physics**

KNOWNS: Diverging (convex) mirror Radius of curvature = 60 cm (f = 30 cm) M = 1/5 Hi = 20 cm UNKNOWNS: Ho? Di? Do? EQUATIONS: 1/Do + 1/Di = 1/f M = Hi/Ho = -Di/Do
*February 24, 2009 by Brock*

**12th grade**

A thimb is 23.0 cm from a concave mirror. The focal point is 9.0 cm. Where is the image located?
*May 4, 2010 by Daniela*

**physics**

where would the image of a 4.0 cm tall object that is 12 cm in front of a flat mirror be located?
*May 16, 2011 by David*

**artwork critique**

Interpretatin: what does the artwork mean? what you trying to say? who artwork intended for? you trying to teach a lesson? does artwork speak to you? how? This artwork mean to search for yourself, how you really be. Artwork intended for all people in world who sometime lose ...
*February 12, 2012 by Mohammad*

**Language**

Are the nouns in the following sentences-- thing, pop or do I include she and whole and appetite? Would She be a noun also? She usually washed the whole thing down with a quart of pop. She had a big appetite.
*October 10, 2007 by Tyler*

**help?**

the last few times I've posted questions no one has answered them...I'm starting to get kind of upset. let's see if this one gets answered: the perimeter of a square is 44. find the length of a diagonal.
*March 18, 2013 by 21 Guns*

**7th Math**

A plumber must bend a piece of tubing twice, allowing 5/8 inch for each bend. use the total of 12 1/2, 16 3/4, and 18 3/4. To find the total length of tubing needed?
*October 27, 2011 by K*

**geometry**

a classroom is 10 yards long . the floor is being tiled with new square tiles that are each 10 inches long. how many tiles are needed to make 1 row the length of the classroom
*November 16, 2011 by Anonymous*

**Chemistry **

The solubility of salicilyc acid in water at 20C is .2g in 100mL. The solubility is salicilyc acid in boiling water is 6.67g in 100mL. Calculate the minimum volume of water needed to re-crystallize .550g of crude salicilyc acid.
*September 29, 2011 by Jessie *

**Math. fast please!**

The length of a rectangle is 3 cm and the width is 2 cm. find the length of the diagonal. Is there a formula to do this? The length of a rectangle is 3 cm and the width is 2 cm. find the length of the diagonal. Is there a formula to do this? The diagonal D and each pair of ...
*June 1, 2007 by Emily*

**Math130 help**

In Paul's bicycle shop 40 bikes are needed new tires and 27 needed gear repairs, what is the greatest number of bikes could have neede both and the least number of bikes that could have needed both
*May 16, 2013 by Enis*

**Math help needed**

How many capsules , each containing 250mg, are needed to provide 50mg/kg/day for 10 days for a person weighing 176 lbs?
*February 23, 2012 by Vicki*

**physics- please !**

A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42. PART A: What is the ...
*May 8, 2012 by jeni*

**physics- please !**

A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42. PART A: What is the ...
*May 8, 2012 by jeni*

**5 th math**

sorry, i was to sleepy my type got mess up. my question is if 8 counters are one whole, then what is half? if 9 counters are one whole, then what is one/third? please help my last one. !!
*October 26, 2010 by pat*

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