Wednesday

May 4, 2016
Total # Posts: 3,422

**Math -Trig**

Determine the exact value if cot(3pi/4) using special triangles. I dont understand how it could be 1/tan3pi/4 in a triangle....
*May 3, 2016*

**Math - Trig**

if the diameter of a tire is 3.5 m and makes one rotation every 5 seconds, how far does the tire rotates in one minute?
*May 3, 2016*

**Physics**

An 11.98-gram sample of zinc metal is placed in a hot water bath and warmed to 78.4°C. It is then removed and placed into a Styrofoam cup containing 50.0 mL of room temperature water (T=27.0°C; density = 1.00 g/mL). The water warms to a temperature of 28.1°C. ...
*April 28, 2016*

**Algebra**

Divide. (X^2+6x+9/x-1)/(x^2-9/x^2-2x+1) A. (X+3)(x-1)/(x-3) B. (X-3)(x+1)/(x+3) C. (X+3)(x+1)/(x-3)** D. (X-3)(x-1)/(x+3) Divide. (X^2-4/x-8)/x-2 A.(x-2)(x+2)/x-8 B. X-8/x+2** C. X-2/x-8 D. x+2/x-8
*April 28, 2016*

**Stat**

Does anyone know how to solve for this Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution of minutes spent texting is roughly normal with a mean of 60 and a standard ...
*April 22, 2016*

**Math**

When measuring the volume of a tennis ball, your water level rose from 50ml to 68ml. What is the volume of the ball? I don't know if I divide or add to solve. Here is the choices. 118,108,18,8.
*April 21, 2016*

**Math**

Given that x=log3^5 and y=log3^2, rewrite log3^60 in terms of x and y.
*April 20, 2016*

**Sociology**

I mixed my question up. I need help finding similarities between the two, not differences.
*April 10, 2016*

**Sociology**

Im writing a paper on the similarities and differences of race and ethnicity. I have no problem finding similarities on the two, but finding differences are challenging. The only difference I know of is that they are both socially constructed. Can someoneone give me a few more...
*April 10, 2016*

**BASIC BIO ISH QUESTION**

which animal eats Southern tamandua? And if possible be specific to Venezuela animals THANKS when i tried looking i couldn't really find anything...
*April 9, 2016*

**Sociology**

Any help with this question would be great, even if its just a link(s) of where I could find information. Directly compare and differentiate race and sex and then ethnicity and gender?
*April 9, 2016*

**Neutons Thrid law**

Thank you that makes a lot of sense!
*April 8, 2016*

**Neutons Thrid law**

3. A force of 36 N gives a mass m1 an acceleration of 4.0 m/s2. The same force gives a mass m2 an acceleration of 12 m/s2. What acceleration will this force give to m1 and m2 if the two masses are fastened together? {3.0 m/s2}
*April 8, 2016*

**Neutons Second Law**

A 1200 kg car travelling at 50 km/h experiences an air resistance of 5000 N and road friction of 2200 N. If the wheels push with a force of 7500 N, what is the car's acceleration?
*April 7, 2016*

**Acid Base Chem**

During the course of an experiment with hydorgen phsophate (HPO42-) you find that it is functioning as a base. When you search for the Kb value of it you only find pKa1= 2.15, pKa2= 7.20, and pKa3= 12.35 of phosphoric acid (H3PO4). What is the Kb value??
*April 5, 2016*

**Physics/Cars**

Thank You!
*March 31, 2016*

**Physics/Cars**

Does the mass of the car matter when driving on the road? When skidding?
*March 31, 2016*

**chemistry**

30.2 g/mL
*March 21, 2016*

**Physics**

a bird is flying through the air with an air speed 12.6m/s heading 27.7 west of north. it is a windy day with wind velocity blowing at 8.95m/s heading 12.5 south of west. what is the velocity of the bird as seen by a person on the ground
*March 20, 2016*

**Physics**

your car has stalled and has come to rest on a level section of a busy street. you and a passenger decide to push the car to the side of the road so it will not interfere with the trafic. together you excert a combine horizontal force of 1320N. the coefficent of static ...
*March 20, 2016*

**Calculus**

Q: Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 6 ft high? (Round your...
*March 19, 2016*

**Math/Precal**

How do i give the exact value for: (sin pi/8)(cos pi/24) + (cos pi/8)(sin pi/24)
*March 15, 2016*

**PHYSICS**

Object A experiences a gravitational force due to object B. How would that force change if the separation distance is halved, mA triples, and mB is reduced to one quarter of its original value?
*March 15, 2016*

**mathhh**

A floor refinishing company charges $1.91 per square foot to strip and refinish a tile floor for up to 1000 square feet. There is an additional charge of $250 for toxic waste disposal for any job which includes more than 150 square feet of tile. (a) Find an equation for the ...
*March 13, 2016*

**Biology - Evolution**

THANK YOU!! :)
*March 7, 2016*

**Biology - Evolution**

Suppose you grabbed ten seeds from the large number of seeds that were present and planted them in a garden. During the summer you harvest 100 bean seeds from these 10 groups of plants? Would you wee the same distribution of seed size as when you first planted the seeds? ...
*March 7, 2016*

**Maths**

y = 3cos(3x)cos(10x) This function represents the displacement-time of a guitar string as it vibrates, the period of it is the beat frequency. What are the strengths and limitations of this model?
*March 7, 2016*

**Chemistry**

Would glass, plastic or cardboard be best to store milk so the lactic acid doesn't increase?
*March 6, 2016*

**Literary Devices - English**

What type of literary device is "dead in the eye"
*March 4, 2016*

**math**

: Use the formula from Part I to find the midpoint of the segment with endpoints at (-2, -1) and (0, 9). Show your work.
*February 24, 2016*

**Chemistry**

the longest wavelength of light that will cause an electron to be emitted from a metal is 520nm. what is the work function for this metal? (note: the work function is given as kJ/mole of electrons released)
*February 22, 2016*

**Math**

3/8 x 11/15 in its simplest form
*February 22, 2016*

**French**

oh sorry. lol. I thought the responses weren't showing so I kept typing it.
*February 15, 2016*

**French**

Also, is this correct Great job to the entire cast of Le Petit Nicolas! Excellent travail pour l'ensemble du casting de Le Petit Nicolas !
*February 15, 2016*

**French**

Also is this correct: Great job to the entire case of Le-petit Nicolas! Excellent travail pour l'ensemble du cas de Le-petit Nicolas !
*February 15, 2016*

**French!!!!**

So #1 is "Je la"? and also #4 , I didn't write "a retarder" .. What exactly are you referring to?
*February 15, 2016*

**French**

_________________________________ Also is this correct? 1.) I like comedy and this film has a lot of comedy -Je tiens comédie et ce film a beaucoup de comédie 2.) Overall the movie is successful in terms of comedy and entertainment. -Globalement, le film est un ...
*February 15, 2016*

**French**

Is this right? I personally think the movie is enjoyable and entertaining because the environment in which the film occured is bright Personnellement, je pense que le film est agréable et divertissant parce que l'environnement dans lequel le film est produit est ...
*February 15, 2016*

**Physics **

A Styrofoam bucket of negligible mass contains 1.75 kg of water and 0.450 kg of ice. More ice, from a refrigerator at -15.0∘C, is added to the mixture in the bucket, and when thermal equilibrium has been reached, the total mass of ice in the bucket is 0.884 kg. Assuming ...
*February 1, 2016*

**chemistry**

if 15 grams of ethane gas c2h6, reacts with 128 g oxygen un a combustion reaction, how many moles of water can be produced?
*January 31, 2016*

**English**

Either you must stop eating my food from the refrigerator or you must pay me for it. What sort of conjunction is used in the sentence? common,coordinating,etc
*January 31, 2016*

**Math**

the length of a wall in a floor plan is 6 1/2 inches.the actual wall is 78 feet long. find the scale of the floor plan The height of a building is 3 3/8 inches on a scale drawing. Find the actual height of the building if the scale used is 1inch:4feet. This is basically ratios...
*January 25, 2016*

**History**

What is the counterpart to the police jury? a. county government b. home rule
*January 13, 2016*

**Math**

Together Paul and Jack earned $72 washing cars. Jack washed twice as many cars as Paul. If Paul washed 3 cars, how much did they charge to wash each car?
*January 10, 2016*

**Math**

What percent of 300 gal is 600 quarts? The answer I came up with is 50%. Is this correct?
*January 10, 2016*

**Math**

What percent of 300 gal is 600 quarts? The answer I came up with is 50%. Is this correct.
*January 10, 2016*

**World history **

What does this question mean? Discuss the effects of the development of the Atlantic trade and its impact on the participating civilizations from 1450-1750
*December 9, 2015*

**Calculus **

A home owner wants to fence in his yard of 600 sq. feet. Three sides are to be constructed with chain link fence at a cost of 3.25 per linear feet. The fourth side is to be constructed with a wood stockade fence at a cost of $5.45 per linear foot. A) what is a complete model ...
*December 7, 2015*

**Math**

Jim runs 50% faster then Bob. In a 1200m race how much of a head start should Bob get to make the race fair I got a 600m head start but am I right??
*November 5, 2015*

**math**

30 chocolates in a bowl. 12 are dark chocolate, 8 are white chocolate and 10 are coffee. what is the chance of getting a coffee chocolate?
*November 5, 2015*

**Math**

Sixty girls were scheduled to paint flower pots for the school's annual fair. When 3 of the girls became sick the rest of the girls had to paint 8 more flower pots each how many flower pots did they have to paint altogether ?
*October 28, 2015*

**Math**

In a high school reunion, the organizers decided to sell 1500 raffle tickets at 1000 each for the four prizes of 250,000 125,000 75,000 50,000 What is the expected value of one ticket? I got -670, is this correct? Thanks!
*October 28, 2015*

**Physics**

A walker's speed, v, is proportional to the ratio of his leg length, L, and the period of the repeating motion of his legs, T, that is, v ∝ L/T. If the period is measured to be proportional to Lp, where p = 3/5, what power of L must the speed be proportional to? ...
*October 27, 2015*

**conversion**

Please help me to convert 0.02ug/ul to ng/mL
*October 22, 2015*

**Physics**

Holding a long rope by its upper end, you lower it onto a scale. The rope has a mass of 0.160 kg per meter of length, and is lowered onto the scale at the constant rate of 1.30 m/s. (1) Calculate thrust. (2) At the instant when the amount of rope at rest on the scale has a ...
*October 20, 2015*

**Math**

Oh I get it now! Thanks a lot! :D
*October 15, 2015*

**Math**

How did it become 2/3? Does the 3 refer to the number of toss? And the 2 refer to the occurrence of the head? I'm sorry if I ask too many questions. Thank you for helping me!
*October 15, 2015*

**Math**

A coin is biased so that a head is twice as likely to occur as a tail. If the coin is tossed 3 times, what is the probability of getting 2 tails and 1 head? What do you mean by biased in probability?
*October 15, 2015*

**Math**

Thank you so much! I'm out-of-school kid.
*October 15, 2015*

**Math**

In a gambling game, a man is paid 400 if he draws a jack or queen and 500 if he draws a king or ace from an ordinary deck of 52 playing cards. If he draws any other card, he loses. How much should he pay to play if the game is fair? My answer is 138.46. Am I correct? Thank you!
*October 15, 2015*

**Math**

Oh okay. I see. Thanks a lot!
*October 15, 2015*

**Math**

The probability that a washing machine will operate satisfactorily for 3 years is 0.82 while the probability that a floor polisher will operate satisfactorily over the same period of time is 0.78. Find the probability that in a 3-year period, only the floor polisher will ...
*October 15, 2015*

**Statistics**

n=13 p=0.75 p (more than 11)
*October 14, 2015*

**Probability**

In a gambling game, a man is paid 400 if he draws a jack or queen and 500 if he draws a king or ace from an ordinary deck of 52 playing cards. If he draws any other card, he loses. How much should he pay to play if the game is fair? My answer is 138.46. Am I correct? Thank you...
*October 14, 2015*

**Probability **

The probability that a washing machine will operate satisfactorily for 3 years is 0.82 while the probability that a floor polisher will operate satisfactorily over the same period of time is 0.78. Find the probability that in a 3-year period, only the floor polisher will ...
*October 14, 2015*

**Stats **

Based on recent U.S. Census data of adults, approximately 48% are male. According to a 2013 study by The Henry J. Kaiser Family Foundation, 70% of U.S. adult males are obese while 58% of U.S. adult females are obese (round to THREE decimals). What is the probability of an U.S...
*October 7, 2015*

**maths**

how would you solve 14 = 0.9x(x - 6)
*September 30, 2015*

**english**

suggest, create, predict suffix adj, noun, adv, verb
*September 13, 2015*

**english**

abuse suffix adj, noun, adv, verb
*September 13, 2015*

**english**

attract suffixes of adj, noun, adv, verb
*September 13, 2015*

**Physics**

A 2500-kg car is traveling at 20 m/s around a road curve of radius 200 m. Find the central force acting on the car?
*September 13, 2015*

**Trigonometry**

a pizza has a diameter of 18 inches and it's divided into 8 equal parts, and you take one slice of it. what is tha central angle of your share in mills measurements? with a solution
*September 12, 2015*

**math**

Luanne estimates the sum of 39 + 15 is about 40 + 15, or 55. Jacob estimates the sum of 39 + 15 is 40 = 20 or 60 which one is closer to the exact sum?
*September 3, 2015*

**calculus**

find the two numbers whose sum is 10, if the product of one by the cube of other is a maximum.
*August 24, 2015*

**Finance**

Organic Foods Inc. sells 50-pound bags of grapes to the public schools for $10 a bag. The fixed costs of this operation are $80,000, while the variable costs of grapes are $.10 per pound. a. What is the break-even point in bags? b. Calculate the profit or loss on 12,000 bags ...
*August 2, 2015*

**math**

express the repeating decimal 10.232323 as a ratio of two integers
*July 15, 2015*

**statistics**

Go to a local library; collect a sample of books consisting of the ages of book (based on copyright dates). Plan and describe the sampling procedure, then use the results to construct a confidence interval estimate of the mean age of all books in the library. Please, post and ...
*June 26, 2015*

**Physics**

A box is sliding down an incline tilted at an angle of 2.14° above horizontal. The box is sliding down the incline at a speed of 5.15 m/s. The coefficient of kinetic friction between the box and the incline is 0.387. How far does the box slide down the incline before ...
*June 25, 2015*

**chemistry**

how many grams of cacl2 are needed to prepare 6.00L of a 0.400M CaCl2 solution
*May 30, 2015*

**physics**

A resistor is connected inseries
*May 21, 2015*

**Physics**

KE= 1/2 mv^2 = 1/2 (0.070 kg) v^2 ; Ft= mv v= Ft/m v=(152N)(0.030s)/0.070kg V= 65 m/s = 1/2 ((0.070 kg) (65 m/s) ^2 = 148.5 J
*April 30, 2015*

**Chemistry 1002**

Over a period of time, the concentration of sulfuric acid in a lead storage battery of an automobile has decreased from 38 percent by mass(density=1.29 g/mL) to 26 percent by mass(1.19 g/mL). Assume the volume of the acid remains constant at 715 mL. a)Calculate the total ...
*April 19, 2015*

**Math**

Chad buys peanuts into pound bags Siri packages them into bags that hold 56 pounds of peanuts how many 2 pound bags of peanuts should Chad by so that he can fill the 56 pound bags without having anything that's left over
*April 16, 2015*

**Math**

Suppose the speedometer of your car reads 90 km/ hr. If you are driving in the united states where the maximum speed is posted as 50 mi/ hr By how much are you exceeding the speed limit.
*April 14, 2015*

**Math**

Can someone do out the calculations for me on 7 yds , 1 ft,- 3 yds, 2 ft,= what in ft . Thanks
*April 14, 2015*

**Math**

The figure below represents a garden in which a flower bed ( inner rectangle) is to be installed. The garden ( excluding the flower bed) is to be sodded. The outer is 9' ft width and 15' ft long and the inner is 3'ft wide and 7'ft long. A) Find the area of the ...
*April 14, 2015*

**English/grammar**

Is this better Writeacher? Shortly after moving to the Wisconsin, Molly began attending Second Baptist Church. During service one day, she said she was approached by a longtime parishioner named Cynthia Givens, who was aware of Molly's unstable living condition. Cynthia ...
*April 12, 2015*

**English/grammar**

Can someone proofread my English paragraph for grammar? I'd really appreciate it. Give me advice/tips on how to make it better Shortly after her moving to the Wisconsin, Molly began attending Second Baptist Church, where during service one day, she said she was approached ...
*April 12, 2015*

**Latin I**

I need help translating it
*April 11, 2015*

**Latin I**

“Arms and the man I sing”—With these words Virgil began his poem about the origins of the Rome. The “wars” were not only the famous Trojan War, but also the wars in Italy; “the hero” is Aeneas, who traveled from Troy to a new town, New Troy, ...
*April 11, 2015*

**math**

A handful of paper clips is 5.2 grams. A handful of push pins is 500 centigram a. Which handful weighs more? So 1c equals .o1 grams so isn't it 5.2 g compared to .05 grams which then means the paper clips are heavier? Thx for any help you can provide.
*April 9, 2015*

**Math**

Trying to find the rule & equation for the function table. x= 1, 2, 3, 5, 10, 12 y= 9, 13, 17, 25, 45, 53
*April 8, 2015*

**Finance**

• A. Calculate Allied’s cost of debt. (4 marks) The cost of debt is the YTM of the bonds, so: P0: $950 = $80(PVIFAR%,9) + $1,000(PVIFR%,9) PMT: 80 PV: 950 FV: 1000 N: 9 I: YTM = [80 + (1000 – 950) / 9] / 1000 + 950/ 2 R = 85.56 / 975 = 0.0877 or 8.78% FC = 8.82...
*April 4, 2015*

**ENGLISH**

That works, but I am going to continue to play around with it a bit. I appreciate you're help Writeacher. You've been very helpful, thank you!
*April 3, 2015*

**ENGLISH**

trying to paraphrase what they said
*April 3, 2015*

**ENGLISH**

her daily routine after work consisted of grading papers and watching TV so she was looking for ways to spend her time more "productively" after work and decided volunteering would be the best approach. I'm trying to think of a good sentence for all this information
*April 3, 2015*

**ENGLISH**

Does this sentence make sense? For Amber volunteering instilled the desire to use her time more productively and simultaneously make a difference in the community.
*April 3, 2015*

**Calculus**

If two resistors with resistances R1 and R2 are connected in parallel, as in the figure, then the total resistance R, measured in Ohms (Ω), is given by: 1/R=1/R1+1/R2 If R1 and R2 are increasing at rates of .3Ω/s and .2Ω/s, respectively, how fast is R increasing...
*April 1, 2015*

**Calculus**

1 pt) For positive constants k and g, the velocity, v, of a particle of mass m at time t is given by v=mg/k(1−e−kt/m). At what rate is the velocity is changing at time 0? At t=8? What do your answers tell you about the motion? At what rate is the velocity changing ...
*April 1, 2015*