Thursday

September 3, 2015
Total # Posts: 3,333

**4th grade math**

40
*July 25, 2011*

**Basic Statistics **

A population of 300 voters contains 147 Republicans, 135 Democrats, and 18 independents and members of other parties. A simple random sample of 30 voters will be drawn from this population. Consider repeatedly drawing simple random samples of size 30 from the population (...
*July 24, 2011*

**statistics**

Two dice are rolled and two fair coins are tossed. Let X be the sum of the number of spots that show on the top faces of the dice and the number of coins that land heads up. The expected value of X is _____ .
*July 22, 2011*

**statistics**

Two dice are rolled and two fair coins are tossed. Let X be the sum of the number of spots that show on the top faces of the dice and the number of coins that land heads up. The expected value of X is _____ .
*July 22, 2011*

**intermediate algebra**

Short answer find the quotient 6x^3-x^2-7x-9 ------------ 2x+3
*July 22, 2011*

**algebra**

this could be a start if the website could find its file:o(
*July 21, 2011*

**Math**

A cylinder is inscribed in a right circular cone of height 8 and radius (at the base) equal to 2.5. What are the dimensions of such a cylinder which has maximum volume? What is the radius, and height?
*July 20, 2011*

**intermediate algebra**

find the product.(7x^2-y)(7x^2+y)
*July 20, 2011*

**intermediate algebra**

find the product. (5x-6y)(5x+6y)
*July 20, 2011*

**intermediate algebra**

Find the product. -9y^2(y^4+8y^3-y^2+8y+7)
*July 20, 2011*

**intermediate algebra**

plz help I'm lost word problems
*July 19, 2011*

**intermediate algebra**

Essay. Show all work. find the quotient: 49a^2-b^2 --------- 7a-b
*July 19, 2011*

**intermediate algebra**

Essay. Show all work. find the quotient: y^4+3y-1 -------- y^2-3
*July 19, 2011*

**physics**

Five boxes, each having weigh 100N, are stacked up. The bottom box is the fith from the top. What is the magnitude of the normal drove upward exerted by the fourth box from the top on the third box from the top
*July 19, 2011*

**algebra**

Essay. Show all work. Find the following quotient: 36x^2-49y^2 ----------- 6x+7y
*July 18, 2011*

**algebra**

short answer. find the following quotient: x^2-36 ------ x+6
*July 18, 2011*

**algebra**

find the following product:(x-3)(x+3)
*July 18, 2011*

**algebra**

short answer. find the following product -7z(-8z^3+3z^2+8)
*July 18, 2011*

**algebra**

find the following product: 5x^2y(-4x^5y^4)
*July 18, 2011*

**algebra**

One of the authors of this text is moderately active, weighs 87kg, is 185cm tall and is 59 yr old. what are his daily caloric needs?
*July 18, 2011*

**algebra**

Essay; show all work. Find the product: (1/7x^2-2/5)(1/2x-1/2) any help would be appreciated
*July 17, 2011*

**chemistry**

If I have 30 glucose molecules, how many CO2 molecules will that produce?
*July 14, 2011*

**chemistry**

if someone has a blood sugar number of 200 after 12 hours of fasting, what would you tell the patient?
*July 14, 2011*

**chemistry**

if a sample of alloy containing magnesium and metal that doesn't react wtih hydrochloric acid are reacted, how much heat would be evolved from a 5 gram sample that is 30% magnesium?
*July 13, 2011*

**statistic**

Identify the level of measurement for the following? 1)What state/country were you born? 2)What is the temperature outside rigth now? 3)Rank all of the courses you are currently.The class you look most forward to taking will be rank one ,next two ,and so on . what is the rank ...
*July 13, 2011*

**statistic**

Identify the level of measurement for the following? How long does it take you to drive to the school on average ( to the nearest minute)
*July 12, 2011*

**math**

thank you. It worked
*July 11, 2011*

**math**

the computer said my answer was correct like this (a/b)+(1/d)=(1/c) but I need to do the reciprocal of (1/c) and I dont know how that will look in the equation
*July 11, 2011*

**math**

I need help with rearranging this equation to isolate c a=b((1/c)-(1/d)) I got this (a/b)+(1/d)=(1/c) but I dont know the last step with the reciprocal. Could someone please help, thank you
*July 11, 2011*

**Math**

is it then a=(ef/d)-(b/c) ?
*July 11, 2011*

**Math**

Hi I need help with this question. Rearrange this equation to isolate a ((a+(b/c))(d/e)=f I know you first should divide both sides by (d/e) Can anyone help, thanks
*July 11, 2011*

**chemistry**

Why can’t ethyne be turned into trans or cis isomers?
*July 10, 2011*

**physics**

thank you!
*July 8, 2011*

**physics**

A car traveling 95 km/h slows down at a constant 0.80 m/s^2 just by "letting up on the gas. A) Calculate the distance it travels during the second second. B) Calculate the distance it travels during ninth second.
*July 8, 2011*

**Chemistry**

Compare the water solubility and expected BP of propanol, propyl acetate, and acetic acid. Briefly explain why the difference are evident. Thanks!!
*July 7, 2011*

**stats**

If other factors are held constant, how does increasing the sample variance affect the value of the independent-measures t statistic and the likelihood of rejecting the null hypothesis?
*July 3, 2011*

**Physics**

A rectangular coil of 70 turns, dimensions 0.100 m by 0.200 m and total resistance 10.0 ohms, rotates with angular speed 32.0 rad/s about the y axis in a region where a 1.00 T magnetic field is directed along the x axis. The rotation is initiated so that the plane of the coil ...
*July 2, 2011*

**Physics**

How much heat must be transferred to each kilogram of aluminum to bring it to its melting point, 660°C, from room temperature, 20°C?
*June 29, 2011*

**albebra**

Thanks drwls, I knew the answer, I just don know how to properly express it in an algebraic formula? Thanks
*June 29, 2011*

**albebra**

The answer is the easy part, but how do I express it in an algebraic formula? Ken purchased an investment property for 245,000 and sold it at a 12% loss. How much did he sell it for?
*June 29, 2011*

**trig **

A 115 foot foot casts a 147 foot shadow, what is the degree of elevation to the sun
*June 28, 2011*

**Math**

Find the probability of the following if there are 30 students in the class who have been numbered and you use a calculator to generate random numbers between 1 and 30. A number less than 10.
*June 28, 2011*

**overton high**

two crates weigh 9kg and 14kg with a force of 195 newtons. what is the acceleratio?
*June 26, 2011*

**statistics**

Find the value of t(10, 0.01)
*June 22, 2011*

**math**

A cube has 6 sides. Each side has a number from 1 to 6. Each number is used only once.
*June 18, 2011*

**persuasive essay **

need help checking grammar errors please and how good is it? Credits cards have some positive value to them from being able to make big purchases, to making an everyday purchase. This reminds me of a quote said by John Mc Donald’s “Everything that has a positive side...
*June 17, 2011*

**grammar**

5.The external oblique fascia was then incised, and the incision was lengthened in the direction of the fibers. pls let me know all verbs in this sentence.
*June 15, 2011*

**calculus**

Differentiate. sqrt((6x^2 + 5x + 1)^3)
*June 14, 2011*

**calculus**

Differentiate. sqrt((6x^2 + 5x + 1)^3)
*June 14, 2011*

**Algebra**

Given a= -3 and b=4 and c= -5, evaluate |c-a-b|
*June 13, 2011*

**Trig**

URGENT, Please answer this question: give the value of: Tan(Arctan x+1/x-1+Arctan x-1/x)
*June 11, 2011*

**Trig**

give the value of tan(arctan x+1/x-1+arctanx-1/x)
*June 9, 2011*

**algebra/trig**

1. find domain f(x)=(sqrt(x^(2)-9))
*June 8, 2011*

**algebra/trig**

1.Find the domain f(x)=ã(x^(2)-9) 2. Find all six trig functions for (-3,4)
*June 8, 2011*

**math**

Suppose the cost of producing x items is given by C(x)=1000-x^3, and the revenue made on the sale of x-items is R(x)=100x-10x^2. Find the number of items which serves as a break-even point.
*June 6, 2011*

**math**

John owns a hotdog stand. He has found that his profit is represented by the equation P(x)=x^2 + 12x + 46, where x is the number of hotdogs. What is the most he can earn?
*June 6, 2011*

**Algebra**

x= } 1/ã2
*May 31, 2011*

**trig**

y = sin (3x-2pi)
*May 30, 2011*

**eco**

A?
*May 26, 2011*

**HISTORY**

In the eleventh and twelfth centuries, the Song Dynasty had all of the following characteristics except equal status for men and women?
*May 26, 2011*

**History**

Why was president Johnson impeached and do you think it was the right action to take? * I have to write a paragraph on this and was wondering if someone could explain it a little better to me because from what im reading it says the impeachment didnt work because they didnt ...
*May 24, 2011*

**med**

Making use of the following terms, write a fictitious medical report of about two paragraphs describing a dermatologic condition or disease. Focus the report on the onset, progression, location, and etiology of the condition or disease, and the treatment parameters. All terms ...
*May 23, 2011*

**chem.**

What is an ionic substance made from?
*May 22, 2011*

**chem.**

If 130.0 g Zn reacts, what mass of ZnCL2 are produced?
*May 22, 2011*

**biology/honors**

Charle Darwin made theory of natural selection but couldnt explain why there is variation within populations. Explain two reasons why there is variation within population ? PLEASE help me answer this question is for my test
*May 20, 2011*

**biology/honors**

How does genetic variation lead to speciation ? Can you help me answer this question please for the review test ? thank you .
*May 19, 2011*

**biology/honors**

Can someone help answer this question please is one of my study guide for the test? What are some adaptation that hominid populations developed as opposed to primates ? thank you
*May 19, 2011*

**Math**

Which is the exact value of the expression sqrt 32- sqrt 50 + sqrt 128 2 sqrt 7 7 sqrt 2 22 sqrt 2 2 sqrt 55
*May 19, 2011*

**chemistry**

Oxygen can be produced by the thermal decomposition of mercuric oxide: 2 HgO(s) → 2 Hg(l) + O2(g) How many liters of O2 are produced at 50.0°C and 0.947 atm by decomposition of 57.0 g of HgO?
*May 18, 2011*

**science**

What is the average velocity of the argon atoms in the gas phase at 75°F?
*May 18, 2011*

**geometry**

how long are the congruent legs of isosceles triangle if its base and altitude to the base are 12cm and 8 cm respectively?
*May 17, 2011*

**geometry**

miss sue can u pls help me?
*May 17, 2011*

**geometry**

how long are the congruent legs of isosceles triangle if its base and altitude to the base are 12cm and 8 cm respectively?
*May 17, 2011*

**geometry**

A photographic negative 35mm long and 24mm wide is to be enlarge to make a picture 28.8 cm long.find the width of the picture?
*May 17, 2011*

**geometry**

the sides of a triangle is 9,12,15cm..Find the sides of a similar triangle if the longest side is 20 cm
*May 17, 2011*

**geometry**

what is the ratio of 2 segments where the length of one is 8cm while that of the other is 4ocm?
*May 17, 2011*

**geometry**

X=15 y=20
*May 17, 2011*

**geometry**

a segment of 35cm long is divided in 2 segment whose ratio is 3:4 how long is each segment?
*May 17, 2011*

**lit class**

what is the allusion in this passage my mom is a draconian monster. Amy cried in her best "victim" voice to her friend jessop. "She won't let me do anything fun. yesterday she made me study vocabulary words before I could go out with my friends. that where ...
*May 17, 2011*

**lit class**

So it would be Calvin Coolidge? I thought it was john Hancock because heserved as president of the second continental congress and he became a synonym for his signature maybe I'm getting in depth I see what you are saying it just means signature in this passage.
*May 16, 2011*

**lit class**

what is the allusion in the passage from a letter written by a world war I veteran in the mid 1920's well we are finally getting what we richly deserve. the adjusted compensation act law. Even Calvin Coolidge wouldn't put his john Hancock on the bill congress, did ...
*May 16, 2011*

**Lit Class**

so it's donnybrook because it's describes from the past
*May 16, 2011*

**Lit Class**

what is the allusion in the passage watching a debate would be boring." Kristin said. "I really don't think that's how I want to spend my Saturday morning. "Oh no Mary argued. I've heard some debated where words flew like verbal donnybrooks and were ...
*May 16, 2011*

**LIT CLASS**

what is the allusion in this passage as so we conclude that despite the plethora televisions. stereo, video games, gigantic movie theater complexes and the world wide web-- all of which bombard the populace and myriad images and numberless opportunities to communicate --the ...
*May 16, 2011*

**math**

a sphere has a volume of 500/3 £k cubic centimeters. what is the total surface area, in square centimeters, of the sphere?
*May 16, 2011*

**Pre- Algebra**

3000 2 = 6000 -2-5 you cant do that so you switch the signs so its -2+-5=-7 so its 6000 times -7 hope this helped
*May 15, 2011*

**Physics**

A small light is 13.0 cm below the surface of a liquid of refractive index 1.20. Viewed from above, the light appears to illuminate a circle on the surface of the water. What is the diameter of the circle?
*May 13, 2011*

**physics help!**

how do we find out the electron charge and mass if we dont know what type it is?
*May 12, 2011*

**help fast ,( physics) **

the distance between q3 and q2 is 48 cm and between q2 and q1 is 56 cm ?? what would the answer be now?
*May 12, 2011*

**help fast ,( physics) **

this question will help me too, if only you can give abit more detail,when it comes to answering this question... please
*May 12, 2011*

**spanish/check please**

1-Yo tengo (tantas/ tantos) praticas como mi hermano answer: tantos 2- Juan toma ( tantas/ tantos) lecciones de artes marciales como Carlos. answer:tantos 3- Elena tiene( tantas/ tantos) pasatiemptos como Angelica. answer:tantas 4_ Camilo tiene(tanto/tanta) interes en el ...
*May 10, 2011*

**Calculus**

True or false. 1. If F'(x) = G'(x) on the interval [a,b] then F(b)-F(a) = G(b)-G(a). I think it's true but I just want to check my reasoning. F'(x) = G'(x) means that F(x) and G(x) differ by a constant (which may be 0). When the subtraction is done to find ...
*May 10, 2011*

**Math**

Two fire towers are 30 kilometers apart, tower A being due west of tower B. A fire is spotted from the towers, and the bearings from A and B are E 14 degrees N and W 34 degrees N, respectively. Find the distance d of the fire from the line segment AB.
*May 10, 2011*

**Calculus**

integral 5e^t-(sin(t))dt I figured this out as the answer 5e^t+cos(t). My question is if I need to put a +C at the end of the equation. Thanks for your time.
*May 10, 2011*

**math**

just did this in my homework... break even quantity F/(s-c) Revenue s(f/(s-c))
*May 7, 2011*

**calculus**

What is the indefinite integral of 6/(x ln(2x)??
*May 6, 2011*

**stats**

A particular college basketball player is a 80% free throw shooter. In a game, he took 20 free throws. Find the probability he made 18 or more of his free throws.
*May 5, 2011*

**Algebra**

Thank you for your help.
*May 5, 2011*

**Algebra**

Im having a hard time figuring out this problem: Use the function, y=-(x+1)^2 +2, to answer the following parts. The increasing interval and decreasing interval To find both I believe that: increasing : x < -1 decreasing : x > 1 So is this on solution below Increasing ...
*May 5, 2011*

**physics**

If 1200 cal of heat are added to 50 g of water initially at a temperature of 15 oC, what is the final temperature of the water?
*May 4, 2011*