Sunday

December 21, 2014

December 21, 2014

Total # Posts: 75,762

**statistics**

interested in the mean IQ score of a given group of children. It is known that the IQ scores of the group have a standard deviation of . The psychologist randomly selects children from this group and finds that their mean IQ score is . Based on this sample, find a confidence ...
*December 21, 2014*

**finance**

which of the following investments paid the highest rate of return? (a) a corporate bond that paid $72 per year in interest and that cost $600 to purchase (b) a money market fund that paid 8 percent interest (c) a corporate stock that cost $40 to buy and that paid dividends of...
*December 21, 2014*

**economics**

A bond yields $100 yearly at 4 percent interest. What is the market value? I got $1,500.
*December 21, 2014*

**ap calc**

For the curve f(x)=xln(x)+ (1-x)ln(1-x), find the value of x in the interval 0<x<1 where f(x) has a minimum. Please help I have no idea how to solve.
*December 21, 2014*

**ap calc**

Find the value of c which satisfies Mean Value Theorem for the function f(x)=sin(x) on the closed interval (-3ð/2,3ð/2).
*December 21, 2014*

**Nothing Realted **

I know this question should not be here but my samsung galaxy s5 is not working. The screen will come but i can not do anything. Technically it is frozen. I have tried every method. I tried to take the battery out. It did not work. I also tried to reboot it but the options ...
*December 21, 2014*

**Math**

An experimental solid disc flywheel has a 300m diameter and a mass of 70kg. Experiments show that, at all speeds of rotation, the frictional resistance to motion is equivalent to a torque of 0.15Nm. if when the flywheel is rotating at 50 rev/min, the driving power is removed, ...
*December 21, 2014*

**biology**

What role does the lilac flower play in its natural ecosystem? What is its niche in the food web
*December 20, 2014*

**ap calc **

Find the value of c which satisfies Rolle's Theorem for the function f(x)=sin(x^2)on (0, ãpi).
*December 19, 2014*

**English**

But what are some characteristics of a revolutionary song?
*December 19, 2014*

**English**

How do I write a revolutionary song?
*December 19, 2014*

**Biology**

In an ecosystem, when energy is given off as heat, does it change forms from chemical substances to heat? Or is it something different?
*December 19, 2014*

**Math**

For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. X Y 4 6 8 12 10 15
*December 19, 2014*

**Geometry I**

Thanks much
*December 19, 2014*

**Geometry I**

What is the measure of 1? • 47o • 37o • 74o • 53o
*December 19, 2014*

**Math**

0.5?
*December 19, 2014*

**Math**

Is the sequence arithmetic? 15, 14.5, 14, 13.5, 13,....If so, give the common difference.
*December 19, 2014*

**Math**

The ordered pairs (0,-3), (1,2), (2,7), (3,12) represent a function. What is a rule that represents this function?
*December 19, 2014*

**S.S**

What prohibited trade with another country? A. Embargo Act*** B. Smuggling C. Impressment D. neutral rights Is it A?
*December 19, 2014*

**statistics**

Write a correct alternative hypothesis for the claim that the average professional basketball player is at least 6’ 9” tall.
*December 19, 2014*

**Physics AIPMT**

H=gt²/2 16H/25 =g(t-1)²/2 16gt²/2•25 = g(t²-2t+1)/2 16t²=25t²- 50t +25 9 t²-50t +25=0 t= (50±sqrt(2500-4•9•25))/18=(50±40)/18 t₁=5 s, t₂=0.55s ( extraneous root since is less than 1 second) H= gt²...
*December 19, 2014*

**Algebra**

The heigh h, in meters, that Andreina is above the water t seconds after beginning her dive is given by the formula h = -5t^2 + 6t + 10. After how many seconds will Andreina hit the water, rounded to the nearest tenth of a second?
*December 19, 2014*

**Algebra**

When Neil was 2 miles upstream from camp on a canoe trip, he passed a log floating downstream with the current. He paddled upstream for 1 more hour and then returned to camp just as the log arrived. What was the rate of the current?
*December 19, 2014*

**Math**

Use differential, (i.e. linear approximation), to approximate cube root of 64.1 as follows: Let f(x) = cube root of x. The linear approximation to f(x) at x = 64 can be written in the form y = mx+b. Compute m and b and find cube root of 64.2 via linear approximation
*December 19, 2014*

**Math**

Use differential, (i.e. linear approximation), to approximate cube root of 64.1 as follows: Let f(x) = cube root of x. The linear approximation to f(x) at x = 64 can be written in the form y = mx+b. Compute m and b and find cube root of 64.2 via linear approximation
*December 19, 2014*

**calculus**

The circumference of a sphere was measured to be 89.000 cm with a possible error of 0.50000 cm. A. Use linear approximation to estimate the maximum error in the calculated surface area. B. Estimate the relative error in the calculated surface area.
*December 19, 2014*

**Algebra math**

The height H and beat of a ball after T seconds is given by H equals 80t team take away 16x2. how long did it take for the bout to hit the ground
*December 18, 2014*

**math**

w=80rmp r=2ft what is v=ft/min
*December 18, 2014*

**math**

There are 27,878,400 square feet in one square mile. How many square feet are there in 35 square miles? Estimate by rounding the number of square feet in one square mile to the nearest ten million and the number of square miles to the nearest ten. Also find the exact answer
*December 18, 2014*

**Math**

What is a real world problem that compares the ratios 5 to 9 and 12 to 15.
*December 18, 2014*

**statistics**

An IQ test was administered to a random sample of 26 mental patients and the mean was found to be 99.7. For this test, the population values are known to be normally distributed and with a population standard deviation of 15. Construct a 90% confidence interval for the mean IQ...
*December 18, 2014*

**Math**

Lindsay bought six cds at the mall: the original price was $13 each but she got a discount, and only paid a total of $58.50 for all six. what was the discount
*December 18, 2014*

**english**

thanks
*December 18, 2014*

**english**

307 (Ps sorry for labeling this as the wrong subject)
*December 18, 2014*

**english**

Peter attends 6 dance lessons each week, all year long. There are 52 weeks in a year. Peter missed 5 dance lessons while sick. How many dance lessons did Peter attend during the year?
*December 18, 2014*

**physics**

If you use a horizontal force of 30.0 N to slide a 12.0 kg wooden crate across a floor at a constant velocity, calculate the acceleration.
*December 18, 2014*

**Math help**

A boy has 380 prize tickets he wants to exchange for action figures at a prize booth. At this prize booth 5 tickets can be exchanged for a large action figure, and 7 tickets can be exchanged for 2 small action figures. The boy wants 4 times as many small action figures as ...
*December 18, 2014*

**Math**

Ohh okay. I get it now, thank you!
*December 18, 2014*

**Math**

Steve said that x+y = 14.. Steve also explained to you. *How are you confused on what numbers to multiply to get 59.50..?* if x+y = 14 then it would be x= 7 y=7 5x means 5 multiplied by x and x is 7. 5 times 7 is 35 so now its 35 + 3.50y 3.50 times 7 is 24.5 so now 35 + 24.5...
*December 18, 2014*

**Math**

8.5? Imma kinda confused on what numbers I need to multiply to get 59.50..
*December 18, 2014*

**Math**

She deposits $5 or $3.50 into her account. She made 14 deposits which equaled $59.50. how many times did she deposit $5 & how many times did she deposit $3.50 - I don't know how to do this!
*December 18, 2014*

**L.A **

This isn't a question but if you have helped me in L.A today thank you. I just want to thank everyone for the help and everyone for helping each other! Happy holidays and have a wonderful Winter Break! :-)
*December 18, 2014*

**language arts**

nevermind. Thanks!
*December 18, 2014*

**language arts**

ok thanks! can you check that for me? :)
*December 18, 2014*

**language arts**

Well B is one of them by the way(: I went over the chapter. It's definitely not C Again I re read the sentence " Sam Adams was so happy his hands shook worse then ever" and that show'd that doesn't determine what type of ruler general gage is. so.. I ...
*December 18, 2014*

**language arts**

What do you think is the other one and we can check
*December 18, 2014*

**Chemistry**

I need help with this question. 1. You have a tank of helium with a volume of 10 liters that is currently under 40 atm of pressure. If you open the valve on the tank and release the helium into a room with a volume of 10,000 liters, how many atmospheres of pressure will the ...
*December 18, 2014*

**Math **

What is the equation of the line that has a slope of 0 and passes through the point (6, -8) A. x=6 B. y=6 C. x=-8 D. y=-8
*December 18, 2014*

**business math**

toby signed a simple discount promissory note for $20,000. the discount rate is 8.5%, and the term of the note is 90 days. what are toby's proceeds on the loan?
*December 18, 2014*

**math**

A taco stand sells tacos for $3.25 each. The stand’s expenses for the day are $210. Define your variables and write an inequality to represent the amount of tacos they need to sell per day to make a profit, and then solve the inequality. Provide your conclusion as a ...
*December 18, 2014*

**math**

* not multiple choice* 2/3n = 8 solving the system of equations 4x + 3y = 13 y= -x +4 * not sure how to do this the slope intercept form of the function that contains the point (-3, 2) and has a slope of -2? my answer: y= -2x + 6 -1 + 5(6-y) my answer is -y + 29
*December 18, 2014*

**Algebra**

Thx. After getting rid of the fractions, I could easily use the quadratic formula to find the roots, (1, 2/3)! :D
*December 18, 2014*

**Algebra**

Find all real roots of the following equation. x^2 - (5/3)x = -2/3 Thx
*December 18, 2014*

**algebra**

what does M grade mean making progress less than 70
*December 18, 2014*

**Math**

The cost of staying at a hotel can be found using the function y = 129x + 9.95, where x is the number of days a guest stays at the hotel and y is the cost in dollars. The cost includes a flat fee for Internet access. If the fee for Internet access is not included, which ...
*December 18, 2014*

**Physics**

starting from rest a 7.5 kg suitcase slides down a 30 degree frictionless incline a distance of 3.1 m upon reaching the bottom it slides an additional 5 m before coming to a stop. a) determine speed of suitcase at bottom of ramp b) determine coefficient of kinetic friction ...
*December 18, 2014*

**Physics**

65 kg pole vaulter running at 10.2 m/s vaults over the bar. if height of bar was set at 4.96 m how fast was he moving as he cleared the bar
*December 18, 2014*

**Physics**

800 n student is standing in middle of frozen pond stranded 6.4 m from shore only thing he has is physics book which has mass of 3 kg so he throws it at 10 m/s toward one shore how long does it take him to reach opposite shore
*December 18, 2014*

**optional maths**

(1+sec 2A) (1+sec4A) (1+sec8A) = tan8AcotA
*December 18, 2014*

**L.A.**

I've read this book
*December 18, 2014*

**Math**

Let y = sqrt(7-x) Find the differential dy when x= 1 and dx = 0.4 Find the differential dy when x= 1 and dx = 0.02
*December 18, 2014*

**science**

Which of the following best describes the process of diffusion?
*December 18, 2014*

**Logical Fallacy**

Penguins are black and white. Some old TV shows are black white. Therefore, some penguins are old TV shows. Is this a valid and unsound argument?
*December 17, 2014*

***repost* L.A**

I thought my other one was to long so I decided to shorten up the questions.. Please check (: Choose the sentence that uses the word "cultivate" as is used in the sentence from the novel below "novel is Johnny Tremain" 1. As soon as Johnny began to ...
*December 17, 2014*

**L.A**

Thank you all for helping me on 3
*December 17, 2014*

**L.A **

Choose the sentence that uses the word "cultivate" as is used in the sentence from the novel below "novel is Johnny Tremain" 1. As soon as Johnny began to cultivate Dove, he was surprised at the response. A. The farmer sought to cultivate a garden of ...
*December 17, 2014*

**Cardiovascular Respirtory**

What is the meaning of the root word FURC/O? A. Division B. Vein C. Heart D. Blood vessel
*December 17, 2014*

**Cardiovascular Respirtory**

Which organ sterilizes ingested food? A. Stomach B. Liver C. Salivary glands D. Pancreas
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

Which is not a symptom of peptic ulcers? A. Gangrene B. Gnawing pain in the abdomen C. Loss of appetite D. Nausea
*December 17, 2014*

**Cardiovascular Respirtory**

Which is not a symptom of peptic ulcers
*December 17, 2014*

**biology**

Explain how a new population might be formed
*December 17, 2014*

**Math (Repost)**

*not multiple choice* u^-3 = 1/125 y - 1 = 4y - 2/3 * not sure how to do this what is the y intercept of the line? y= -3x - 5 * my answer is 5 when 40 is added to the number miles she ran last week..the result is the same as adding 10 to 4 times the number she ran last week...
*December 17, 2014*

**biology**

what is the most accepted mechanism for evolution
*December 17, 2014*

**Cardiovascular Respirtory**

Crohn's disease
*December 17, 2014*

**Cardiovascular Respirtory**

A 42-year-old male is admitted to the hospital with chronic inflammation of the intestinal walls resulting in diarrhea, constipation, and melena. Which of the following conditions does the patient have?
*December 17, 2014*

**Cardiovascular Respirtory**

Which one of the following suffixes means "spitting"? A. -PNEAC. B. -PTYSIS C. -SPHYXIA D. -OSMIA MY ANSWER IS B
*December 17, 2014*

**Cardiovascular Respirtory**

Which one of the following suffixes means "spitting"?
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

anorexia.
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

anorexia
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

The medical term for "loss of appetite" is
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

PERI/O
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

What is the root word for the term pericardiectomy?
*December 17, 2014*

**Math**

*not multiple choice* u^-3 = 1/125 y - 1 = 4y - 2/3 * not sure how to do this what is the y intercept of the line? y= -3x - 5 * my answer is 5 when 40 is added to the number miles she ran last week..the result is the same as adding 10 to 4 times the number she ran last week...
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

The function of the sinoatrial node is to
*December 17, 2014*

**Cardiovascular, Respiratory, and Digestive Systems**

A patient complains of a fast heart rate. Which diagnosis does this statement indicate?
*December 17, 2014*

**chemisty**

determine the molarity of each of the ions present in the following aqueous salt solutions (assume 100% ionization) 1.25 M CuBr2 how many grams of each ion would be present in 100mL of each solutions.
*December 17, 2014*

**SS**

Is explaining a country's location compared to two continents an example of relative location?
*December 17, 2014*

**Math**

How many solutions does the following system have? { 16x - 8y=20 { 4x - 2y= 5 A. 0 B. 1 C. 2 D. Infinitely many
*December 17, 2014*

**Cellular Anatomy/Integumentary and Musculoskeletal**

Which one of the following is an example of epithelial tissue?
*December 17, 2014*

**Cellular Anatomy/Integumentary and Musculoskeletal**

Hair follicles, sweat glands, and sebaceous glands can all be found in the _______ layer of the skin, which is considered to be "true skin
*December 17, 2014*

**Cellular Anatomy/Integumentary and Musculoskeletal**

Which of the following is an accessory organ of the integumentary system?
*December 17, 2014*

**Cellular Anatomy/Integumentary and Musculoskeletal**

Which group of words are energy sources for muscles
*December 17, 2014*

**Cellular Anatomy/Integumentary and Musculoskeletal**

Which one of the following is an example of epithelial tissue?
*December 17, 2014*

**Cellular Anatomy/Integumentary and Musculoskeletal**

Which process involves the removal of thin layers of malignant growth and subsequent microscopic examination?
*December 17, 2014*

**Algebra **

Steve is driving to a ski resort. At first, he drove at a rate of 65 mph. Then a snow storm started and he had to slow down to 40 mph. In total. it took him 6 hours to drive 310 miles. Which system of equations represents this situation? A. 6x + y= 1 x + y= 310 B. x + y= 105 ...
*December 17, 2014*

**math**

101.
*December 17, 2014*

**Math**

What was the answer that you chose? I'm asking so people don't just give you the answer and we can check it(:
*December 17, 2014*

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