Sunday

February 19, 2017
Number of results: 5,700

**math**

The amount of pollution, A (in part per million), present in the air outside a factory on a recent weekday is represented by the equation A= -t^2+16t+6, where t is the number of hours after 7 AM. (a) find the Times (in radical form) when there were 42 parts per million of ...

*November 18, 2013 by Evy*

**math**

please help me to perform the indicated operation.15-20/(3)(5)-15 You need additional parentheses or brackets to clarify the order of operations. For example, 15-{20/[(3)(5)]}-15 = 20/15 = 4/3 (15-20}/[(3)(5])-15 = -15 1/3 15-[20/(3)](5)-15 = 100/3 (15-20)/[(3)(5)-15] = -infinity

*April 23, 2007 by carmen*

**Pre-Algebra 7th**

What does 20 divided by 4 minus 5 plus 12 equal? I'm trying to understand the order of operation. I think the answer might be -12. Is this correct?

*September 23, 2008 by Laura*

**algebra**

perform the indicated operation and if possible,simplify please show all of your work. write your answer in lowest terms. 18/35 divided by 22/25

*November 7, 2011 by Angela*

**physical science**

diagram the motion of pistons in a four stroke engine.

*May 4, 2009 by chaundra*

**physics**

how long does it take a 19kW steam engine to do 6.8x10^7 J of work?

*February 28, 2010 by yo*

**physics**

A 1000 kg sports car accelerates from 0 to 30 m/s in 10 s. What is the average power of the engine?

*June 23, 2010 by Anonymous*

**physics**

a 1500 kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered to the engine?

*September 26, 2010 by shnook*

**Auto**

If the engine is vibrating within a certain rpm range, what is the likely cause?

*May 14, 2011 by Alex L.*

**physics**

How long does it take a 25 kW steam engine to do 5.6 × 10^7J of work? Answer in units of s

*January 5, 2012 by stacy*

**area and perimeter**

a farmer wishes to build a fence around a rectangular field and divide it into two equal parts as well.the dividing fence must be parallel to one of the side of the field. you are asked to find dimension of the field of maximum area that you can fence and divide in two equal ...

*February 13, 2014 by malobisa*

**math**

Adam drew two same size rectangles and divided them into the same number of equal parts.He shaded one third of one rectangle and one forth of the other rectangle.What is the least number of parts into which both rectangles could be divided?

*January 29, 2015 by Emily*

**chemistry help**

How do forces determine the shape of a protein? A. The covalent bonds in the protein determine the shape of the protein. B. The protein folds into complex shapes through intermolecular forces. C. Polar parts of a protein are repelled by water. D. Hydrophobic parts of a protein...

*August 19, 2016 by Jessie*

**college alg HELP!**

I cannot figure a way to do this problem: An investment of $98,000 was made by a business club. The investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second 6%, and third 9%. The total interest from the ...

*November 18, 2010 by samantha*

**World History (Ms. Sue)**

Explain why the British were interested in East Africa. What other countries claimed parts of East Africa? A: The British were interest in East Africa for strategic reasons--East Africa lay between the two British-controlled areas of South Africa and Egypt. However, besides ...

*October 21, 2014 by Victoria*

**Maths**

A blue train is 500m long and is travelling at 58km/h. A yellow train is 400m long and is travelling at 32km/h. The trains are travelling towards each other. Ooriginally, the trains are 900km apart. A) how long will it take for the 2 trains to reach each other? B) how many ...

*October 4, 2016 by Dana*

**statistics**

The makers of the MAGNETIZER Engine Energizer System (EES) claim that it improves gas mileage and reduces emissions in automobiles by using magnetic free energy to increase the amount of oxygen in the fuel for greater combustion efficiency. Following are test results, ...

*July 4, 2013 by Katie*

**statistics**

A production process is considered to be out of control if the produced parts have lengths with a standard deviation greater than .5 mm. A sample of 41 parts yields a sample standard deviation of .58 mm. At the .05 significance level, does this sample indicate that the process...

*December 5, 2010 by Mallory*

**Science**

An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the folloeing objects will accelerate EXCEPT a)a ball striking a wall, in which the force of the ball on the wall is equal ...

*April 30, 2008 by Annie*

**Science**

An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the folloeing objects will accelerate EXCEPT a)a ball striking a wall, in which the force of the ball on the wall is equal ...

*April 30, 2008 by Barbie*

**Science**

An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the folloeing objects will accelerate EXCEPT a)a ball striking a wall, in which the force of the ball on the wall is equal ...

*April 30, 2008 by Barbie*

**science**

an object accelerates (cahnges its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT a) a ball striking a wall, in which the force of the ball on the wall is equal ...

*May 1, 2008 by barby*

**science**

an object accelerates (cahnges its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT a) a ball striking a wall, in which the force of the ball on the wall is equal ...

*May 1, 2008 by barby*

**Science-Elements**

what 2 things does the formula of a compound tell us? I'm not sure if I'm right, but this is what I wrote: The formula for the compound tells you that it is two parts hydrogen and one part oxygen. The compound carbon dioxide is one part carbon and two parts oxygen.

*March 29, 2010 by Sara*

**math**

Lexie divided these hexagons into 2 parts and shaded one part. Which shaded parts cover half the hexagon? A.only the shaded trapezoid B.both the shaded triangle and the shaded Pentagon C.only the shaded Pentagon D.both the shaded trapezoid and the shaded Pentagon And could you...

*March 29, 2015 by Anonymous*

**Biology**

An example of homologous structures would be our front teeth and ___: a. the mandibles of a crab b. the mouthparts of a mosquito c. the beak of a bird d. the tentacles of a sea worm e. the front teeth of a horse I'm having difficult on which answer is right (my answer would be...

*January 18, 2017 by KC*

**math**

Perform the indicated operation(s) and express the result in standard form. Leave answers in terms of square roots (do not use decimals). (-9-sqrt-3)^2

*September 13, 2011 by john*

**7th grade math**

The question is simplify -9=1(36divided by 2 x3-4) I did -9+1(18x3-4) _9+1(54-4) -9=1(50) -9+50 41 Is this correct I did this with a friend and we both got different answers. Maybe I di the wrong order of operation?

*November 12, 2012 by EN*

**physics**

A car can go from 0 to 85 km/h in 10 s. If the engine delivered twice the power, how many seconds would it take?

*March 28, 2011 by Elle*

**physics**

how much work is done by an engine using 105 watts of power in 3.2 seconds?

*April 12, 2011 by Jason*

**PHYSICS**

a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine?

*February 23, 2012 by GRISSELL*

**Physics**

What is the maximum theoretical efficiency of a steam engine operating between 60°C and 410°C?

*June 27, 2012 by Tom*

**physics**

Compare the work that a 22-kW car engine does in 60 seconds if its efficiency changes from 100% to 75%.

*August 4, 2014 by chen*

**math 104**

A rocket engine, 2.44 cross product 10−5 watts/cm2

*December 7, 2014 by Anonymous*

**Physics**

A car speeds up from 12 m/s to 20 m/s in 6.4s.If its mass is 1200 kg,what force must its engine provide ?

*February 11, 2015 by Jason*

**INFORMATION LITERACY**

What do you like and dislike about Bing(common search engine).

*March 23, 2016 by DALE*

**U.S. History (Check, Please!) (Ms. Sue)**

1. What two major decisions did the Allies make at Casablanca? A: At Casablanca, the Allies decided to increase the bombing of Germany and attack the Axis on the island of Sicily. 2. What conditions had to be met before Eisenhower could order D-Day to begin? A: Before ...

*January 10, 2016 by Victoria*

**PHYSICS**

Q.1.A spring of force constant'k'is cut into two parts whoose lengths are in the ratio 1:2.The parts are now connected in paralle and a block of mass'm'is suspended at the end of the combined spring.Find the period of oscillation performed by the block. Q.2.The angle (in ...

*December 25, 2009 by CHIKIRSHU*

**algebra**

sqrt 12x^3 . sqrt 3xy^2 perform the operation and simplify

*December 12, 2009 by immanuel*

**algbra**

perform the given set operation. let u={1,2,3,4,5,6,7,8,9,10} {x[xis a multiple of 2}u {x is the multiple of 3}

*April 10, 2014 by wanda*

**physics**

When you step on the accelerator to increase the speed of your car, the force that accelerates the car is eitheir the force of your foot on the accelerator, the force of friction of the road on the tires,the force of the engine on the drive shaft, or the normal force of the ...

*November 18, 2006 by tatiana*

**Economics**

Think of a business. Describe its operation in terms of factor markets and product markets.

*September 22, 2007 by Anonymous*

**Precalculus**

Perform the indicated operation and the write the result in standard form (6+ sq root -5)(6 + sq root -7)=

*October 19, 2007 by George*

**Math**

Perform the indicated operation. (-72) ÷ (9 - 9) Would this be -72 divided by zero? So the answer would be undefined?

*October 20, 2009 by Anonymous*

**math**

Perform the given set operation. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. please solve this: {x | x is a multiple of 2} ∪ {x is a multiple of 7}

*October 9, 2013 by Anonymous*

**Physics 2**

State Lenz’s law and explain Briefly explain the operation of an electric generator

*July 28, 2014 by seanmarch58*

**Physics**

A helicopter carrying Dr. Evil takes off with a constant upward acceleration of 5.0 m/s2. Secret agent Austin Powers jumps on just as the helicopter lifts off the ground. After the two men struggle for 10.0 s, Powers shuts off the engine and steps out of the helicopter. Assume...

*March 8, 2015 by Ko*

**English**

Can you please check these sentences for me, please? Number 4 contains a run-on sentence I need to simplify. Thank you very much. 1) Victor created the monster with body parts selected from corpses chosen for their beauty. (??) 2) Victor created the monster by selected parts ...

*December 28, 2010 by Franco*

**Finance**

Omega Instruments has budgeted $300,000 per year to pay for certain ce- ramic parts over the next 5 years. If the company expects the cost of the parts to increase uniformly according to an arith- metic gradient of $1 0,000 per year, what is it expecting the cost to be in year...

*May 26, 2013 by Aly*

**Math**

Is this correct? The problem says perform the indicated operation. (9x^2-7x-66)+(8x^2+9x) I came up with this for the answear -66+2x+17x^2 or could it be 17x^2+2x-66

*April 28, 2009 by Bryan*

**math115**

add -57+(-22)=-79 place numbers in acsending order 25,-13,8,-2,13,3,18=-13,-2,3,8,13,18,25 perform the indicated operation -21-(-9)/-21-(-21)=-12/-42 add -3/5+(8/35)=13/35 subtract -2.3-(-8.8)=6.5

*October 16, 2009 by p*

**math115**

add -57+(-22)=-79 place numbers in acsending order 25,-13,8,-2,13,3,18=-13,-2,3,8,13,18,25 perform the indicated operation -21-(-9)/-21-(-21)=-12/-42 add -3/5+(8/35)=13/35 subtract -2.3-(-8.8)=6.5

*October 16, 2009 by p*

**college algebra**

Perform the operation and put in standard form. (8+square root of-12)-(4+2square root of 3i)

*February 11, 2016 by Kadyn*

**math**

perform the indicated operation 4√45- 6√125=

*May 30, 2011 by nichole*

**math**

perform the indicated operation 6√45 - 8√125

*June 29, 2011 by nichole*

**ALGEBRA**

An investment of $93,000 was made by a business club. the investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second earned 6% and the third 9%. total interest from the investments was $7110. The interest from...

*March 30, 2012 by XOCHIL*

**word problem**

An investment of $93,000 was made by a business club. the investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second earned 6% and the third 9%. total interest from the investments was $7110. The interest from...

*March 30, 2012 by XOCHIL*

**world history**

According to Procopius, two sixth century Christian monks undertook an elaborate smuggling operation to provide Byzantium with the knowledge to produce

*June 10, 2010 by Nina*

**college algebra**

Perform the indicated operation(s) and express the result in standard form. Leave answers in terms of square roots (do not use decimals). (-9-sqrt-3)^2

*September 13, 2011 by john*

**algebra**

Perform the indicated operation and, if possible, simplify. Please show all of your work. Write your final answer exactly as a fraction in lowest terms. 14/45 / 26/27

*October 12, 2011 by Anonymous*

**accounting**

The following information is related to the Lilliput Veterinary Clinic for April 2010, the firm's first month of operation: Compute the cost of services rendered.

*September 3, 2012 by Josh*

**matha**

what is 5*2*1*10 paste 5*2*1*10 in your Google Search engine, and hit enter. thankx the answer is 100

*March 18, 2007 by nila*

**physics**

A 1100 kg sports car accelerates from 0m/s to 33m/s in 13s What is the average power of the engine?

*October 12, 2009 by Dan*

**physics**

A 1300 kg sports car accelerates from rest to 90 km/h in 7.0 s. What is the average power delivered by the engine?

*March 1, 2010 by peyton*

**physical science**

inside the cylinders of a diesel engine, what helps to ignite the fuel and air?

*May 10, 2010 by Coby*

**UncG**

A 1300 kg sports car accelerates from rest to 90 km/h in 7.4 s. What is the average power delivered by the engine?

*June 6, 2010 by kendra*

**Physics**

A 1200 kg sports car accelerates from 0m/s to 27m/s in 10s. What is the average power of the engine?

*October 14, 2010 by mike*

**Physics**

A 1300 sports car accelerates from rest to 90 in 6.5 . What is the average power delivered by the engine?

*October 17, 2010 by Nikohl*

**Physics**

A 1300 kg sports car accelerates from rest to 85 km/h in 6.2 s. What is the average power delivered by the engine?

*February 28, 2011 by Kathleen*

**PHYSICS**

A Carnot type engine has a reservoir of 1000 K with an efficiency of 50%. Find the temperature of the sink.

*August 18, 2011 by KAIT*

**PHYSICS**

a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine? Please help

*February 26, 2012 by TRACY*

**Physics**

If a car delivers 76.2 hp of power, how much time will it take for the engine to do 5.78e5 J of work?

*April 18, 2012 by Anonymous*

**physics**

If an engine produces a (mass flow rate) of 100kg/s of thrust, what is the force in Newtons?

*July 19, 2012 by Joe*

**physics**

A 1.00 x 10^3 kg sports car accelerates from rest to 25.0 m/s in 7.50 s. What is the average power output of the automobile engine?

*December 6, 2012 by Leslie*

**Physics**

A 3kw engine operates for 3secs, 10kgf force is applied find the Displacement.

*January 14, 2015 by Sean*

**Physics**

A 3200 lb car traveling at 30 mi/hr speeds up to 60 mi/hr. How much useful work was supplied by the engine?

*March 18, 2016 by Reed*

**algebra**

perform the operation and simplify the answer. sqrt 12x^3 . sqrt 3xy^2 Please show work.

*December 11, 2009 by annette*

**math**

Which set of integers is not closed under what operation? + - x Division I thought it was division but I don't understand , can you please explain this. Thanks

*January 21, 2013 by b6*

**6th grade math**

When solving an inequality, why is it necessary to perform the same operation on each side of the inequality sign?

*February 11, 2015 by genesis*

**Reiny!!!! math help**

We understand how to do the questions now and we are really glad n thankful, but the graphing portion of it is confusing. Continuation of the function. The teacher wants us to plot the points from the different parts of the questions we answered and with your help we graphed ...

*October 9, 2012 by Cole n Cynthia*

**Calculus**

The machine earns the company revenue at a continuous rate of 62000 t + 38000 dollars per year during the first six months of operation, and at the continuous rate of $69000 per year after the first six months. The cost of the machine is $170000. The interest rate is 5% per ...

*November 30, 2010 by Will*

**English**

I need help figuring out what strategy is used to begin a essay. Is it Development by example, process analysis, comparison and contrast, definition, classification or causal analysis? Last June, as I stood behind the bright orange guard door of the machine, listening to the ...

*August 3, 2010 by Keisha*

**Geometry**

Which is the hypotenuse-angle theorem? ________________________________________ A. If the hypotenuse and an acute angle of a right triangle are congruent to the corresponding parts of another right triangle, then the triangles are congruent. B. If the hypotenuse and an obtuse ...

*June 30, 2010 by Superman*

**COLLEGE ALGEBRA**

An investment of $63,000 was made by a business club. The investment was split into three parts and lasted one year. The first part of the investment earned 8% interest, the second 6% and the third 9%. Total interest from the investments was $4950. The interest from the ...

*March 24, 2012 by AMBER*

**COLLEGE ALGEBRA**

An investment of $63,000 was made by a business club. The investment was split into three parts and lasted one year. The first part of the investment earned 8% interest, the second 6% and the third 9%. Total interest from the investments was $4950. The interest from the ...

*March 25, 2012 by AMBER*

**math**

a manufacturer's cost is given by C= 300 cube root of n + 1200, where c is the cost and n is the number of parts produced. find the cost when 8 parts are produced. help please!!!! We have C = 300n1/3 +1200 Substitute 8 for n to get C = 300*81/3 +1200 You should know that 23=8...

*October 13, 2006 by tay*

**12th grade**

Think of a business in your local area. Describe its operation in terms of factor markets and product markets.

*September 21, 2008 by Esmeralda*

**math**

Perform the operation and write the result in standard form. 1 + i over i - 3 over 4 - i Do I have to multiply top and bottom by i?

*June 10, 2009 by Jack*

**Math**

Hi I am not good with math. Please tell me how to differentiate mixed numbers, order of operation,subtraction, divide and multiplication etc. Thanks!

*September 14, 2012 by Leah*

**internet**

Explain the difference between the operation of virtual-circuit networks and datagram networks by listing the advantages and disadvantages of each.

*April 23, 2014 by Olumide*

**Algebra I**

Operations with Integers 6/25 [- 5/9] 6 * 5 ______ 5*5*9 Now I cancel the five on top and one of the five on the bottom. = 6/45 I don't know if I did the operation correct? Thank You for your help.

*January 28, 2015 by Mia*

**Introduction to computers**

The command prompt found on Windows 7 and Windows 8 is very similar to the interface of what past operation system.

*November 10, 2015 by Eric*

**ALGEBRA**

2^3+6-5X4=12 show how to solve and show operation

*August 31, 2009 by LAMAR*

**health**

Is HIPPA a detriment to health facility operation?

*February 12, 2011 by Kimberly*

**math**

If the operation # is defined by the equation x # y = 2x + y,what is the value of a in the equation 2 # a = a # 3 ? a. 0 b. -1 c. 1 d. 1.5 e.-1.5 f. 2

*May 9, 2014 by Johnny*

**The basic principle of ore grinding process**

Lifting height and motion trail of projectile action of ore grinding medium depend on rotating speed of grinding machine and the filled amount of ore grinding medium. Both the low speed and high speed will have direct influence on the performance of grinding machine. The ...

*August 10, 2012 by jiandan*

**algebra**

write in simplest form 1/10 / 1/4 they way you typed the problem illustrates well why it is so important to use brackets to show the precise order of operation. I will assume you meant (1/10) ÷ (1/4), if so then it would be (1/10)(4/1) =2/5

*April 25, 2007 by Tony*

**bussiness**

Your boss has asked you to help new employees understand uses of data in systems-operation management and the various statistical process controls they will experience on a daily basis.

*June 18, 2010 by tosha*

**Redlands**

Your boss has asked you to help new employees understand uses of data in systems-operation management and the various statistical process controls they will experience on a daily basis.

*June 24, 2010 by West Montgomery*

**math**

as well as addition,subtraction,division and multiplication.Sally invents the operation Q. when you see Q between two numbers,you double the sum of their squares. The value of 5Q12 would be ?

*November 10, 2012 by wan*