Thursday

October 27, 2016
Total # Posts: 3,461

**algebra**

find the x-intercepts, f(x)=-9x^2-48x-64

*October 24, 2016*

**Math**

How many 10-inch pieces can be cut from a 6-foot piece of shelving?

*October 13, 2016*

**math**

amara rode her bicycle 8 miles in 0.5 hours.what was the average rate that she rode her bicycle in miles per hour?

*September 29, 2016*

**Geometry**

A map has the scale 2.5 inches:.75 miles. The distance from east to west is 6 inches what is the distance in miles

*September 29, 2016*

**Calculus **

1. Use a graph to estimate the limit. Use radians unless degrees are indicated by θ°. (Round your answer to four decimal places.) lim θ → 0 θ/tan(7θ) 2. Assuming that limits as x → ∞ have the properties for limits as x → c, use ...

*September 28, 2016*

**Chemistry**

Write the net ionic equation for the equilibrium that is established when ammonium nitrate is dissolved in water. (Use H3O+ instead of H+)

*September 27, 2016*

**Social Studies**

What were some of the advantages the continental army had over the British? Select all that apply. Fighting on familiar territory*** A large navy More troops*** Better supplies

*September 23, 2016*

**Science**

A family is planning to build a raised planting area using a blend of peat moss, mulch, and a rich organic soil in which to grow the plants. they have been told first to place on the ground a layer of material that will allow for a proper drainage each time the plants are ...

*September 20, 2016*

**algebra**

90 students from three different classes, A, B, and C are going on a field trip. Class A has 32 students and Class B has 28 students. Write an equation to describe the situation.

*September 5, 2016*

**Chemistry**

The homework question said "which 2nd row element has 6 valence electrons and a valence of 2?" I don't really understand the question, because oxygen would be the element with the 6 valence electrons, but wouldn't that mean that it has a valence of 6? Does ...

*September 2, 2016*

**math**

Sam is one-third as old as his brother. In six years Sam will be one-half as old. How old is Sam now?

*August 11, 2016*

**Maths**

How would you solve the equation: 15 = 2x + y

*July 23, 2016*

**Math - Transformations**

State the transformation for g(x) = -2 (2x - 4)³ - 1 Would it be a vertical stretch by a factor of 2 a reflection in the x-axis a horizontal stretch by a factor of 1/2 a translation 4 units right and 1 unit down Am i right?

*July 11, 2016*

**Math **

The function −2𝑓(2𝑥 + 4) − 1 has been transformed from the graph of 𝒇(𝒙) = 𝒙^𝟑 Write the equation for the transformed function.

*July 11, 2016*

**Even or Odd Funciton**

is f(x) = 1/(x^3 - 5x) even, odd or neither? i am thinking neither but im not too sure. cz when i sub in (-x) i get 1/((-x)^3-5(-x)) then i don't really know what this means.

*July 11, 2016*

**Math Please Help**

Simon travels north and south from Main Station. The distance, in km, of the train from Main Station is modeled by the function d(t)=t^3-9t^2+6t, where North is positive and South is negative. Time elapsed after the start of a shift, in hours, is represented by t, where &#...

*July 7, 2016*

**Math Please Help**

Sorry the Equation is d(t)=t^3-9t^2+6t

*July 7, 2016*

**Math Please Help**

Simon travels north and south from Main Station. The distance, in km, of the train from Main Station is modeled by the function 𝑑(𝑡) = 𝑡 3 − 9𝑡 2 + 6𝑡, where North is positive and South is negative. Time elapsed after the start of ...

*July 7, 2016*

**Math**

Can a polynomial function of an even degree be an even function? is this true all the time? Thank You!

*July 6, 2016*

**Math**

so if i found that the roots are -3 and 4 how would i write that? -3(order 2), 4 because at -3 the function acts like a quadratic but at 4 it acts linear.

*July 6, 2016*

**Math **

What does it mean when it says Roots (order) for a function eg. -x^3-2x^2+15x+36 What i mean is how do you the answer.

*July 6, 2016*

**math**

Ashley bought a circular rug for her room. the rug has a diameter of 9 feet. Her room is rectangular-shaped and measures 12 feet by 18 feet. about how much of Ashley's room will not be covered by the circular rug?

*May 18, 2016*

**Math**

I want to make quilt with an area of 42 sq.feet. what are its possible dimensions if they must be whole numbers? Please show his you got your answer

*May 17, 2016*

**BIO PLEASE HELP! **

Identify the Protist and explain why you think it is what you said. We took dead leaves from outside, put them in boiling water then looked at them a week later. Link to image below! LINK: postimg. org/image/gu1201se9/ Ive attempted to look everywhere but i can't find a ...

*May 13, 2016*

**Math**

16/x

*May 13, 2016*

**Biology**

Identify the Protist and explain why you think it is what you said. We took dead leaves from outside, put them in boiling water then looked at them a week later. Link to image below! LINK: postimg. org/image/gu1201se9

*May 13, 2016*

**Biology**

Identify the Protist and explain why you think it is what you said. We took dead leaves from outside, put them in boiling water then looked at them a week later. Link to image below! LINK: postimg. org/image/gu1201se9/

*May 13, 2016*

**STATS**

What is the probability that the average salary of a sample of 49 part time bank teller will be less than $22,600?

*May 12, 2016*

**Math **

There are six true-false questions on a quiz. Not knowing any of the answers, a student guesses randomly. Find the probability of each event. Exactly two answers are correct. Exactly six answers are correct. At least five are correct. At least three answers are correct.

*May 10, 2016*

**Math -Trig**

Determine the exact value if cot(3pi/4) using special triangles. I don't 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*

**math**

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*