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December 21, 2014

December 21, 2014

Post a New Question | Current Questions

**Calculus grade 12**

Determine the derivative of each function A1) y = e^x(Sin²x) A2) y = e²Sin²x B1) y = (x³ + 1)e^-2 B2) y = (x² + 1)e^-2 C) y = x²(theta^Sinx)
*Friday, April 20, 2012 at 2:57pm*

**5th grade math**

the points that amelia scored for each game are shown 325, 198, 262, 301, 275, 229 after her seventh ga, the range of her points was 129 points how many points did she score in the seventh game
*Thursday, April 19, 2012 at 5:09pm*

**Grade 12 life orientation**

Hiv/Aids describe the life style disease/behaviour and explain 5 factors that contribute to the disease
*Thursday, April 19, 2012 at 3:04pm*

**Grade 12 life orientation**

Hiv/Aids describe the life style disease/behaviour and explain 5 factors that contribute to the disease
*Thursday, April 19, 2012 at 2:40pm*

**Grade 11 Math**

jackie mows a stip of uniform width around her 25m by 15m rectangular lawn and leaves a patch of lawn that is 60% of the original area. What is the width of the strip?
*Wednesday, April 18, 2012 at 9:17pm*

**Grade 12 Math**

You have decided to rent a room in your house. The current rent is $450.00/month. If the rent cap is 2.75%, how many years will it take until you can charge at least $525.00/month?
*Wednesday, April 18, 2012 at 9:09pm*

**Binomial Distribution**

A biology quiz consists of twelve multiple-choice questions. Eight must be answered correctly to receive a passing grade. If each question has five possible answers, of which only one is correct, what is the probability that a student who guesses at random on each question ...
*Wednesday, April 18, 2012 at 8:35pm*

**7th Grade Math **

Linda's teacher divided the class into groups of five and required each member of a group to meet with every other member of that group. How many meetings will each group have?
*Wednesday, April 18, 2012 at 7:51pm*

**Maths grade 10**

A road-worker holds a flag in position R with an out stratched arm he swings the flag downwards and it forms an angle of 30 degree with the ground P.his shoe Q is 2,5 metre away from P.his head is 24 centimetre above his shoulder(s).calculate the height of the man.
*Wednesday, April 18, 2012 at 2:15pm*

**math grade 12**

use the binomial theorem to expand and simplify (y^2-2)^6 )(y^2+2)^6
*Tuesday, April 17, 2012 at 11:50pm*

**science**

need help writing a a short report on recycling im in the sixth grade
*Tuesday, April 17, 2012 at 7:58pm*

**science-biology**

I am in 10th grade and can you please help me by defining what is bio-catalysts?
*Tuesday, April 17, 2012 at 1:21pm*

**NYS ELA Online Practice Exam - PLEASE read!**

Today is my NYS ELA Exam Book 1: Multiple Choice Questions. I know I'm supposed to be at school but the 7th graders take the exam around 12:30 or 12:40. Right now the 8th graders are (still) taking the exam so I'm still at home. Tomorrow is Book 2: Listening and Note-...
*Tuesday, April 17, 2012 at 10:21am*

**grade 6 math**

how many rectangles can have the perimiter of 46m
*Monday, April 16, 2012 at 11:55pm*

**Social Studies 4th grade**

What challenges occured to Native American culture when they had contact eith European Settlers? 1. Spread of Disease 2 Increased Barter 3 Decreased Population 4 Inreased Conflict / War 5 ????????
*Monday, April 16, 2012 at 10:41pm*

**social grade 10**

Historical Globalization & imperialism PLEASE HELP! Did imperialism lead to a better life for European immigrants to Canada?
*Monday, April 16, 2012 at 1:36am*

**historical globalization $ imperialism grade 10**

what does eurocentric attitude means?
*Monday, April 16, 2012 at 1:10am*

**history grade 10**

Could you please help with should the Europeans have tried to change the beliefs of the people in their colonies durind imperialist times,what do you think the reasons would be?
*Sunday, April 15, 2012 at 5:44pm*

**history grade 10 **

Could you please help explain if imperialism lead to a better life for Canada's indigenous people?
*Sunday, April 15, 2012 at 5:38pm*

**history grade 10**

Could you help explain if imperialism lead to a better life for immigrants to Canada?
*Sunday, April 15, 2012 at 5:35pm*

**history grade 10**

slavery before 1844, how were the slaves treated, did they have any right?
*Sunday, April 15, 2012 at 5:32pm*

**12th Grade Life Orientation**

In 15 lines discuss 5 ways in which health problem impacts on the community
*Sunday, April 15, 2012 at 3:07pm*

**12th Grade Life Orientation**

In 15 lines critically discuss 5 ways in which the human or environmetal problem impacts on the community
*Saturday, April 14, 2012 at 1:37pm*

**8th grade math**

Each side of a picute is enlarged by 125%. If the original area was 88 square inches, what is the area of the enlarged picture?
*Thursday, April 12, 2012 at 2:36pm*

**Calculus grade 12**

find the coordinates of all points on the graph of f(x) = x + 2cos(x) in the interval [0, pie] at which the tangent line is horizontal.
*Thursday, April 12, 2012 at 12:50pm*

**Calculus grade 12**

differentiate the function a) y = cos³x b) y = Sin²xCos3x c) y = Sin (x³)
*Thursday, April 12, 2012 at 12:49pm*

**Calculus grade 12**

a total of 8 meters of fencing are going to be used to fence in a rectangular cage for pets and divide it into three smaller cages **the photo that is shown with this question is three (3) boxes stuck together side by side horizontally*** determine the overall dimensions that ...
*Thursday, April 12, 2012 at 12:49pm*

**Calculus Grade 12 University**

a total of 8 meters of fencing are going to be used to fence in a rectangular cage for pets and divide it into three smaller cages **the photo that is shown with this question is three (3) boxes stuck together side by side horizontally*** determine the overall dimensions that ...
*Thursday, April 12, 2012 at 12:36am*

**Calculus grade 12**

solve for (<_ = less than or equal to / pie = pie sign / -pie = negative pie) 3 sin²x = cos²x ; 0 <_ x < 2pie cos²x - sin²x = sinx ; -pie < x <_ pie
*Thursday, April 12, 2012 at 12:35am*

**Calculus grade 12**

differentiate the function ( a) y = cos³x b) y = Sin²xCos3x c) y = Sin (x³)
*Thursday, April 12, 2012 at 12:33am*

**Calculus grade 12**

a) determine the derivative of y = sin2x b) determine the derivative of y = 2SinxCosx c) shoe that derivatives in parts a) and b) are equal d) explain why derivatives in parts a) and be should be equal.
*Thursday, April 12, 2012 at 12:31am*

**Calculus grade 12**

find the coordinates of all points on the graph of f(x) = x + 2cos(x) in the interval [0, pie] at which the tangent line is horizontal.
*Thursday, April 12, 2012 at 12:30am*

**Calculus grade 12**

Determine the equation of the tangent line to the function (² = square): f(x) = x + cos²x at x = pie/4
*Thursday, April 12, 2012 at 12:28am*

**Calculus grade 12**

Determine the derivative of the function (² = square): a) y = (x² + x - 1)Sin²x b) y = (x² + 1)/Sin²x
*Thursday, April 12, 2012 at 12:27am*

**7th grade history**

who was the frist dutch priest in eurpoe
*Wednesday, April 11, 2012 at 8:49pm*

**Math 8th Grade**

The chart below shows an expression evaluated for four different values of x x: x2+x+5: 1 7 2 11 6 47 7 61 Josiah concluded that for all positive values of x, x2+x+5 produces a prime number. Which value of x serves as a counterexample to prove Josiah’s conclusion false? A...
*Tuesday, April 10, 2012 at 10:43pm*

**Math 8th Grade**

Which number serves as a counterexample to the statement below: All positive integers are divisible by 2 or 3 I need as much as possible.
*Tuesday, April 10, 2012 at 10:07pm*

**Math 8th Grade**

What is the y-int of the graph of 4x+2y=12
*Tuesday, April 10, 2012 at 10:04pm*

**8th grade math**

You are making a box out of an 11in by 8in piece of poster board by cutting congruent squares out of the four corners and folding up the edges. To the nearest inch, what size square should you use to maximize the volume?
*Tuesday, April 10, 2012 at 9:42pm*

**8th grade math**

Two towers are similar. The area of the larger tower is 400 pi ft^2 and the area of the smaller tower is 169 pi ft^2. What is the ratio of the heights of the towers?
*Tuesday, April 10, 2012 at 8:46pm*

**8th grade math**

The dimensions of a rectangular prism are all whole numbers greater than 1". If the volume is 165 cu", and the height is 5", what is the perimeter of the base?
*Tuesday, April 10, 2012 at 8:41pm*

**8th grade math**

If the formula D(x,y) = (.7x,.7y) is applied to pre-image point (5, -7), what is the image point?
*Tuesday, April 10, 2012 at 8:40pm*

**SS Help! **

The 2nd amendment is "the right of the people to keep and use bear arms". what does Right to keep and bear arms means??? (please tell in a 7th grade level)
*Tuesday, April 10, 2012 at 7:07pm*

**Social Studies 7R - Bill of Rights Project**

What are the 8 amendments and what are their jobs (that includes interesting facts)? Is their a website for that. Plus make sure it's on a 7th grade social studies level. Thank You! :)
*Tuesday, April 10, 2012 at 7:00pm*

**Math 3rd grade**

Fred needs to do quite a few errands. He needs to stop by the cleaners, the post office, the hardware store, and the bank. There are a number of ways he can tackle his list of stops. How many ways can he accomplish his tasks?
*Tuesday, April 10, 2012 at 6:40pm*

**grade 11 physics**

A championship golfer uses a nine iron to chip a shot right into the cup. If the golf ball is launched at a velocity of 20 m/s at an angle of 45° above the horizontal, how far away was the golfer from the hole when he hit the ball? What maximum height did the ball reach?
*Tuesday, April 10, 2012 at 12:38am*

**7th grade math**

How would you solve the problem below using the subsitution method? 12x + 4 = 8y y = x - 7 Please explain to me and help. If you could show all the steps, that would help a lot. Thank you.
*Monday, April 9, 2012 at 10:08pm*

**World History**

What was the only thing that united East & West Pakistan? Time period: - Decolonization in India and Africa, 10th grade history
*Monday, April 9, 2012 at 7:22pm*

**Physics(12th grade)**

When the temperature of a gas in a vessel is increased by 1C then the pressure is increased by 0.5%. what will be its initial temperature?
*Monday, April 9, 2012 at 12:52am*

**Physics (12th Grade)**

When an ideal diatomic gas is heated at constant pressure then what fraction of heat given is used to increase internal energy of gas?
*Monday, April 9, 2012 at 12:49am*

**Physics (12th Grade)**

In changing the state of a system from state A to state B adiabatically the work done on the system is 322 J. If 100 cal f heat are given to the system in bringing it from state A to state B, then what will be the work done on the system in this process?
*Monday, April 9, 2012 at 12:41am*

**Physics (12th Grade)**

Equal volumes of monoatomic and diatomic gases of same initial temperature and pressure are mixed.What will be the ratio of sprcific heats of the mixture(Cp/Cv)?
*Monday, April 9, 2012 at 12:33am*

**Physics (12th Grade)**

In a certain process 500 cal of heat is given to a system and the system does 100J of work. What will be the increase in internal energy of the system?
*Monday, April 9, 2012 at 12:27am*

**Physics (12th Grade)**

The isothermal bulk modulus of elasticity of a gas is 1.5 * 100000 N/m^2. What will be its adiabatic bulk modulus of elasticity? Given the ratio of Cp/Cv=1.4
*Monday, April 9, 2012 at 12:20am*

**Physics (12th Grade)**

The isothermal bulk modulus of elasticity of a gas is 1.5 * 100000 N/m^2. What will be its adiabatic bulk modulus of elasticity?
*Sunday, April 8, 2012 at 1:15pm*

**Physics (12th Grade)**

What will be the amount of work done in increasing the volume of 10 mols of an ideal gas from one litre to 20 litre at 0C?
*Sunday, April 8, 2012 at 1:08pm*

**pre-algebra 2**

Twenty-five members of the eighth grade class at Park Center Middle School are going to a museum and then to lunch. Each student must pay an entrance fee to the museum and $7.25 for lunch. The total cost for the trip is $443.75. What is the entrance fee for one student? A. $10...
*Friday, April 6, 2012 at 5:01pm*

**6th grade math**

The vertices of triangle ABC are a(8,23) B(2,2) C(2,8). What are the coordinates of the vertices if the triangle is reflected across the x-axis? is it A(8,2) B(2, -2) C(2, -8)?
*Friday, April 6, 2012 at 1:45pm*

**alegbra **

Coach Willful believes that the best sixth-grade soccer players are 58 inches tall, and he will accept his ideal as players on his team. why does the equation:|58-h|<4 express the height,h, of coach Willful's team players?
*Thursday, April 5, 2012 at 10:14pm*

**Health: 6th grade**

What do you do if someone needs a splint?
*Wednesday, April 4, 2012 at 11:51pm*

**6TH GRADE MATH HELP!!!**

Estimate the percent discount Ling will get if the customer usually pays if the phone is 7.95 and the price now is 6.76
*Wednesday, April 4, 2012 at 4:44pm*

**9th grade math **

The sum of two numbers is fifty-two. Their difference is twenty-two. What are the numbers?
*Tuesday, April 3, 2012 at 10:17pm*

**6th grade geography, France**

Why do you think that the central government of Spain granted the Basques limited autonomy? How did political conditions and economic activities in Portugal change. How does Spain differ physically, economically, and culturally from the rest of Europe? Please, please, please ...
*Tuesday, April 3, 2012 at 8:25pm*

**8th grade math**

A quiz had only 3-point questions and four-point questions. The best possible score is 100, and there are 29 questions. How many 4-point questions are there?
*Tuesday, April 3, 2012 at 6:23pm*

**6th grade geography, France plz help ASAP**

which of the following is not true about the po river valley? a. the region is the country's most productive agriculture area b. the region is the site of Italy's major cultural center c. about 2/3 of italy's factory products are made in this region. I think it is...
*Tuesday, April 3, 2012 at 4:03pm*

**Math**

If I missed 24 problems out of 40, what is my grade?
*Tuesday, April 3, 2012 at 9:57am*

**Science 7R - The Human Body Prep Test**

I have a test tommrrow on the The Human Body and I asked my science teacher if she can post a castle learning assignment about the Human Body (the day before the test she always post a caslte learning assignment for us to study and do well on the test the next day) and then ...
*Monday, April 2, 2012 at 7:41pm*

**3rd grade math mrs spadini**

is a centiliter a greaer measure than a milliliter? Explain
*Monday, April 2, 2012 at 6:31pm*

**7th grade math**

For these two problems, you would need to find the slope and y intercept and then write the equation in equivalent to ax + by + c. y=3x y=0 Please help and explain how to do it. Thank you
*Sunday, April 1, 2012 at 8:30pm*

**italy- 6th grade**

Which of the following contrbuted to the heavy soil erosion in italy? a. volcanic activity b. heavy rainfall c. over farming d. overgrazing by goats and sheep my answer: heavy rainfall am i right?
*Sunday, April 1, 2012 at 6:56pm*

**italy- 6th grade**

what are tourists attracted to in each of the three regions of italy?
*Sunday, April 1, 2012 at 4:10pm*

**6th grade geography, Italy**

What are the advantages and disadvantages to Italy of having such diverse regions? 2 of each- disadvantages, and advantages
*Sunday, April 1, 2012 at 3:20pm*

**6th grade geography, Italy**

What are the different types of Italian industries? thanks to any and all help.
*Sunday, April 1, 2012 at 3:19pm*

**SS7R - EC **

who is lady justice? Please i don't want any words that are huge. I want it in a 7th grade level.
*Thursday, March 29, 2012 at 10:43pm*

**6th grade history**

how did athens become rich?
*Thursday, March 29, 2012 at 10:42pm*

**Math (Grade 9)**

Elizabeth visits her friend Andrew and then returns home by the same route. She always walks 2km/h when going uphill, 6km/h when going downhill and 3km/h when on level ground. If her total walking time is 6 hours, then what is the total distance she walks in km? She walks 18km...
*Thursday, March 29, 2012 at 7:16pm*

**5th grade science **

I need to come up with the 3 kingdoms that are mainly cellular and the 3 kingdoms that are mainly unicellular. Would the mainly cellular be: animal, plant, and fungi and then the mainly unicellular be: protis, archea, and bacteria? Thanks.
*Thursday, March 29, 2012 at 4:33pm*

**7th grade math**

Could someone show me how to do this please? 26.2% of a certain number is 81. What is the number?
*Thursday, March 29, 2012 at 12:35am*

**ms.sue 5 grade math**

Lindsay will lay a certain number of 18-inch square tiles in a line to form a walkway. Which of the following is NOT a possible length for the walkway if she uses only whole tiles? A. 6 ft B. 10 ft 6 in. C. 25 ft 6 in. D. 32 ft yesturday you tell me about the answer is (B) ...
*Wednesday, March 28, 2012 at 7:24pm*

**ms.sue 5 grade math**

In 24 hours, one set of twins drank 16 bottles of formula. Each bottle holds 4 fl oz. How many cups of formula did the twins drink? (1 c = 8 fl oz) A. 8 cups B. 7 cups C. 6 cups D. 5 cups my son write a (D)but i think is (A)
*Wednesday, March 28, 2012 at 6:33pm*

**5th grade Math**

Having trouble with the review question below. What is the best unit to use to measure the capcity of a soup pot? a. cup b. pint c. quart d. fluid oz I don't think it is a or d. Not sure though between b and c. I don't know what a soup pot looks like. thanks.
*Wednesday, March 28, 2012 at 4:47pm*

**math**

how would you teach 3rd grade how to do reasonable range on this 22-35 pages per day about how many days willit take to read 90 pages
*Wednesday, March 28, 2012 at 10:03am*

**grade 11 math**

a market researcher predicted that the profit function for the first year of a new business would be p(x)= -0.3x^2 + 3x -15, where x is based on the number of items produced. will it be possible for the business to break even in its first year? thanks
*Tuesday, March 27, 2012 at 10:40pm*

**ms.sue 5 grade math**

1-Becky made 4 quarts of chicken noodle soup in a big pot, then served -cup bowls of soup to 6 people. How much soup is left in the pot? (1 qt = 4 c) A. none B. 1 qt 3 c C. 1 qt 1 c D. 3 c my son put answer (B) 2- A bedroom has the dimensions shown. What is the area of the ...
*Tuesday, March 27, 2012 at 9:44pm*

**Math-Corrections**

Based on the survey,the librarian predicts that about two-thirds of the students in seventh grade will not like the new encyclopedia.Is this answer reasonable? Answer i got:yes
*Tuesday, March 27, 2012 at 7:17pm*

**5th grade Math**

Need to see if I have the answer correct on this review question. Which expression models the verbal description below? the number of markers, m, in 8 packages of markers. Would it be B? a. m + 8 b. 8m c. m divided by 8 d. m - 8 Thanks..
*Tuesday, March 27, 2012 at 6:33pm*

**6th grade science**

can streams run underground. Can they start above ground and run nunderground. PLease help me, I am so so stuck.
*Tuesday, March 27, 2012 at 2:17pm*

**ms.sue 3 grade english**

Posted by dw on Thursday, March 22, 2012 at 6:24pm. GENERALIZE WHEN YOU READ YOU CAN SOMETIMES MAKE A GENERAL STATEMENT ABOUT WHAT YOU HAVE READ. A GENERAL STATEMENT TELLS HOW SOME THINGS ARE MOSTLY ALIKE OR ALL ALIKE. LOOK FOR EXPAMPLES. ASK WHAT THEY HAVE IN COMMON. ...
*Monday, March 26, 2012 at 7:41pm*

**4th grade math- *sigh**

in which situation below would you need to find the area? 1) finding the distance around a pool 2) buying a wallpaper border for your bedroom 3) carpeting the living room 4) fencing a yard
*Monday, March 26, 2012 at 4:35pm*

**Calculus Grade 12 University**

Determine the critical numbers and find the absolute maximum and minimum values of the function y = 8x^3 + x^4 for x e [-8,2]
*Friday, March 23, 2012 at 12:10pm*

**Calculus Grade 12 University**

Use the second derivative test to find the local minimum and maximum values of each function, wherever possible. A) f(x) = 16/x + x^2 B) s(t) = t^4 - 8t^3
*Friday, March 23, 2012 at 12:08pm*

**Calculus Grade 12 University**

The cost, in dollars, for the production of x felt-tipped pens is C(x) = 48 000 + 0.28x + 0.00001x^2, and the revenue is R(x) = 0.68x - 0.00001x^2. What production level maximizes profit?
*Friday, March 23, 2012 at 12:06pm*

**12th Grade Life Orientation**

in 10-15 lines critically discuss five ways in which the human or environmental impact causes within any community in South Africa.
*Friday, March 23, 2012 at 10:52am*

**math**

Which choice offers the lowest cost per ounce? 6oz for 42 cents? 8oz for 64 cents? or 4oz for 36 cents? This is 5th grade math assignment?
*Thursday, March 22, 2012 at 10:23pm*

**6th grade english**

is indiana jones a mystery story?
*Thursday, March 22, 2012 at 10:22pm*

**to writeacher**

i read matthew's post earlier. what is the partnership thing up to friday. how can i join. well i am in 4th grade, but i want to start getting myself encouraged.
*Wednesday, March 21, 2012 at 6:49pm*

**3 grade math ms sue**

which is the better unit to use to measure the capacity of a bathtub: milliters or liters? explain your choice. a liter is equal to 100 centiliters. is a centiliter a greater measure than a milliter? expalin
*Tuesday, March 20, 2012 at 8:47pm*

**4th grade fractions**

come up with 1 fraction up to 99 that has 2 different prime numbers that can work. For example: 20/30 the prime numbers there are 2 and 5. 20 divided by 2. 30 divided by 2. then it would be 10/15. then you do 10 divided by 5. 15 divided by 5. then it would be 2/3.
*Tuesday, March 20, 2012 at 5:48pm*

**Math**

Allison's 11th birthday is just around the corner. Her parents are remodeling her bedroom for her birthday. They will replace her carpet and repaint her walls Allison's Room Height 8ft Width 11ft Length 13ft 1.Allison wants the top 1/2 of her walls painted pink and the...
*Tuesday, March 20, 2012 at 5:00pm*

**Algebra**

If I have an 83 average and I take a test that's 1/3 of my grade and get a 60 on it what would be my total average?
*Tuesday, March 20, 2012 at 2:42pm*

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