Wednesday

August 20, 2014

August 20, 2014

Total # Posts: 929

**statistics**

The duration of time it takes General Motors to build a car is normally distributed with a mean of 31 hours and a standard deviation of 2 hours. a) What is the probability that a single car, selected at random, will take between 28 and 34 hours? b) What is the probability that...
*April 25, 2013*

**statistics **

adult males have normally distributed heights with mean of 69.0 in and a standard deviation of 2.8 in. if a clothing manufacture decides to produce goods that exclude the shortest 12% and the tallest 12% of adult males, find the minimum and maximum heights that they will fit.
*April 24, 2013*

**statistics**

Suppose that the test scores for a college entrance exam are normally distributed with a mean of 450 and a standard deviation of 100. If a student is selected at random what is the probability that the student will score above 600?
*April 24, 2013*

**Physics**

Neglecting air resistance, how high could a 0.15kg baseball be thrown if it is throw straight up at a speed of 25m/s?
*April 22, 2013*

**math**

melissa walks 1 and a half miles to school. After school she walks 7 eights of a mile to the park. how many more miles does she walk to school?
*April 18, 2013*

**Math (Percentage)**

Chet bought a rug that cost $280. He had a coupon for a 10% discount. 1. How much money did he save with the discount? 2. How much did he pay for the rug?
*April 10, 2013*

**algebra 2**

f(x)= X-5 +2
*April 5, 2013*

**Mathematics**

Please help me !!!!!!!!!!!!!! a farmer wants to enclose a rectangular field he needs to put fence posts every 10 ft. how many posts will he need for 200 ft of fencing
*March 31, 2013*

**Math**

a farmer wants to enclose a rectangular field he needs to put fence posts every 10 ft. how many posts will he need for 200 ft of fencing
*March 31, 2013*

**Calculus**

F(x)= ln((3x+6)^4 (x^3 -2)^5 ) F'(x)=
*March 23, 2013*

**physics**

The real image produced by a concave mirror is found to be 0.303 times the size of the ob ject. If the distance from the mirror to the screen on which the image appears is 1.14 m, what is the focal length of the mirror? Answer in units of m
*March 22, 2013*

**Math**

a contractor's designing one side of an office building 48 feet in length the windows are each 5 feet long and will be placed Six feet apart and 5 feet from the end of the building wall how many windows can a contractor design
*March 18, 2013*

**Math**

the first one is on the link, but not the second one
*March 16, 2013*

**Math**

Evaluate the following indefinite integrals. Show all steps please A) ∫xe^x^2+10 dx b) ∫(1/2x+x)(ln(x)+x^2)^10 dx
*March 16, 2013*

**Math**

Optimization Problem A right circular cylindrical can of volume 128tπ cm^3 is to be manufactured by a company to store their newest kind of soup. They want to minimize the surface area of the can to keep costs down. What are the dimensions of the can with minimum surface ...
*March 15, 2013*

**geometry**

A pyramid has a square bottom, with an area equal to 64 squares meters. the height of the pyramid is 7 inches. if you start at the top of the pyramid and slide all the way down the middle of one of the sides how many feet will you move?
*March 12, 2013*

**science**

how much sugar is dissolved in 50grams of a solution if the solution is 20% sugar by mass
*March 10, 2013*

**Math**

Oh wait never mind I see why you don't need to do 1/2. Your trying to find the volume and thank you for your help you two are life savers!
*March 5, 2013*

**Math**

Dr.Jane and Ashley,But don't I need to divide it by 1/2 since its a triangular prism?
*March 5, 2013*

**Math**

The base of the skateboard ramp has an area of 2.3 m square meters the height of the ramp is 1.2 m find the volume of the rectangular prism? Can you help me Dr.Jane or Ms.Sue?!?
*March 5, 2013*

**Math**

there is no brackets for question 3. Although i am still confused. would you be able to give step by step solutions?
*February 28, 2013*

**Math**

Find the dy/dx for each of the following 1)y=ln(2x^6-15) 2)y= 3√ 2x^2-3x-1/5 3) y= x^4/x^2+1
*February 28, 2013*

**trig**

solve tan2x = -28/45 Thank you
*February 28, 2013*

**math**

How many btu's are absorbed when100 lbs of water is heated from 100f to200f
*February 26, 2013*

**Algebra**

On a math test, k students in the class averaged 80%. The remaining students in the class,q students, averaged 94% on the test. The class average on the test was 88%. Express the ration of k/q in simplest form.
*February 25, 2013*

**Algebra**

A large cube is formed by using many small 1"x1"x1" cubes. Once the large cube is formed, all the outside faces are painted. There are now exactly 27 small cubes that do NOT have any paint on any face. How many 1"x1"x1" cubes were used to form the...
*February 25, 2013*

**Finance**

Suppose that an insurance agent offers you a policy that will provide you with a yearly income of $40,000 in 30 years. What is the comparable salary today, assuming an inflation rate of 5% compounded annually?
*February 24, 2013*

**Algebra**

Suppose that an insurance agent offers you a policy that will provide you with a yearly income of $50,000 in 30 years. What is the comparable salary today, assuming an inflation rate of 5% compounded annually?
*February 24, 2013*

**Calculus**

Question 1. A stuntman falls from a hot air balloon that is hovering at a constant altitude,100 feet above a lake. A television camera on shore, 200 feet from a point directly below the balloon,follows his descent. At what rate is the angle of elevation, theta, of the camera ...
*February 22, 2013*

**math**

In a recent survey, it was determined that 1 out of 500 people had more then 6 siblings, based on this statistic what percent of people have more than 6 siblings? Please show me how to solve this!!!
*February 20, 2013*

**math**

reduce 3ar/t
*February 14, 2013*

**math**

solve x (proportion) 2r:3t= x:6a
*February 14, 2013*

**Statistics **

1. Each of 4 people is presented with gourmet coffee and ordinary coffee and asked to identify the gourmet coffee. None of the 4 can really tell the difference and are merely guessing. a. What is the probability that exactly 2 of the 4 correctly identify the gourmet coffee? b...
*February 12, 2013*

**Physics Conservation of Energy**

During a rockslide, a 740 kg rock slides from rest down a hillside that is 500 m long and 300 m high. The coefficient of kinetic friction between the rock and the hill surface is 0.18. (a) If the gravitational potential energy U of the rock-Earth system is set to zero at the ...
*February 10, 2013*

**Physics Conservation of Energy**

During a rockslide, a 740 kg rock slides from rest down a hillside that is 500 m long and 300 m high. The coefficient of kinetic friction between the rock and the hill surface is 0.18. (a) If the gravitational potential energy U of the rock-Earth system is set to zero at the ...
*February 10, 2013*

**Physics**

An electron is projected with an initial speed of (1.6x10^6 m/s) into the uniform field between two parallel plates. Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the plates is zero. The electron enters the ...
*February 5, 2013*

**english**

Just because they are gay, it doesn’t mean they are wrong or weird, it just means they feel a different way about their own genders.
*February 2, 2013*

**english**

i need help, i am writing a paper on gay marriage. I need to write a compound-complex sentence on it too. help!
*February 2, 2013*

**Computer (C)**

I need help with c programming, i need to fill in the code and I got these (need help with question 4), I run the grader and I only got question 1 right. grader code: gcc worksheet.c; ./a.out 0; if [ $? -eq 0 ] then echo 'Question 0 Correct'; else echo $? 'is not ...
*February 1, 2013*

**geometry**

The verticles of triangles BAD are B(1,3) A(7,5) and D (9.-3). If E is the midpoint of segment BA and F is the midpoint of segement AD show that a. segement EF is parallel to BD b. Ef = 1/2BD
*January 29, 2013*

**Physics**

A point particle that has a charge of 12.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 10.0 cm, y = 0. The electric force on a point particle that has a charge of 5.0 µC at x = 20.0 cm, y = 0 is -(19.7) N . Determine the...
*January 29, 2013*

**Physics**

A point particle that has a charge of 12.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 10.0 cm, y = 0. The electric force on a point particle that has a charge of 5.0 µC at x = 20.0 cm, y = 0 is -(19.7) N . Determine the...
*January 29, 2013*

**ENGLISH (thanks)**

so how should i explain this
*January 14, 2013*

**ENGLISH (thanks)**

how is that interpretation above
*January 14, 2013*

**ENGLISH (thanks)**

In every story there is always someone that represents the wrong traits and the right traits of a person. Right vs wrong.
*January 14, 2013*

**ENGLISH (thanks)**

"All Conflict in its simplest form its struggle between good and evil. I need a good interpretation. I cant use good and evil in the interprestation. There needs to be another word for good and evil. I dont know how to interpret without good and evil.
*January 14, 2013*

**chemistry**

electrostatic interaction is important with what type of bond
*January 14, 2013*

**math**

5/6 x 10/23 how do i find the simplest form. thank you
*January 12, 2013*

**physics**

A batted baseball, which leaves the bat at an angle 〖30〗^0 above the horizontal, is caught by an outfielder 120m from the plate. a.) What is the initiated velocity of the ball? b.) How high did it rise? c.) How long was it in the air? my friend asked that ...
*January 9, 2013*

**Math**

A bag holds 57 green and blue marbles. There are 13 more blue marbles then green marbles. How many marbles of each color are there?
*January 7, 2013*

**math**

A community center has 3 tennis teams and 5 basketball teams. No one is on both teams. How many athletes are there?
*January 2, 2013*

**Queen Elizabeth 1**

I did read what ms sue put. but I don't want to have to beat around the bush for answers. I have been reading and watching vids for the last couple hours. i don't expect anyone to write my assignment for me. i would however appreciate it if someone made it a little ...
*December 19, 2012*

**Queen Elizabeth 1**

Identify at least two actions of the Queen that permitted a diversity of ideas and cultural practices within the empire. Identify any actions that reflected intolerance. thanks in advance
*December 19, 2012*

**World History-HELP!!!!!!!!!!!!!!!!!!!**

I didn't copy and paste it, I paraphrased but if you still want me to cite it I can. :)
*December 19, 2012*

**World History-HELP!!!!!!!!!!!!!!!!!!!**

thank you taylor!!!
*December 19, 2012*

**World History-HELP!!!!!!!!!!!!!!!!!!!**

could you give me anything easier?
*December 19, 2012*

**World History-HELP!!!!!!!!!!!!!!!!!!!**

***instead of any actions it should be 2-3 actions for both.
*December 19, 2012*

**World History-HELP!!!!!!!!!!!!!!!!!!!**

what are 2 actions of Queen Elizabeth 1 that benefited or protected the people? Identify any actions that endangered or compromised the well-being of the people.
*December 19, 2012*

**Math**

John says he can make three rectangles of different sizes each out of 16 tiles
*December 17, 2012*

**Chemistry**

213,000 years
*December 11, 2012*

**Science- Chemistry**

Determine the type of bonding in each substance. a. Zinc, Zn (s) b. Propane, C3H8 (l) c. Calcium Carbonate, CaCO3 (s)
*December 11, 2012*

**math**

7.86x4.6
*December 5, 2012*

**Physics**

A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, he decides to perform a simple experiment at the indoor firing range. The soldier hangs a target a distance of d = 101 m from the end of the barrel. The rifle is...
*December 5, 2012*

**Chemistry**

What hybrid orbital is the result of mixing a 1s orbital and 2p orbitals?
*December 3, 2012*

**Chemistry**

What is the electronic geometry of a central atom with 4 electron pairs?
*December 3, 2012*

**pre algrbra **

a=16
*November 28, 2012*

**Physics**

A warehouse employee used a cable to pull a 125 kg crate across the floor. the angle between the cable and the floor was 25°. The magnitude of the pulling force was 185 N. The coefficient of kinetic friction between the crate and the floor was 0.27. A)What was the weight ...
*November 27, 2012*

**Algebra**

Have a couple questions was wondering if someone could check my work? 1. What are the real or imaginery solutions of the polynomial equation? x^4-41x^2=-400 (x^2-25)(x^2-16) x^2=25 or x=+-5 x^2=16 or x=+-4 2. Use synthetic division to find P(-3) for P(x)=x^2-2x^3-4x+4 this one...
*November 26, 2012*

**algebra**

I need someone to check my work not sure if I'm doing this right. The design of a digital box camera maximizes the volume while keeping the sum of the dimensions at 6 inches. If the length must be 1.5 times the height, what should each dimension be? HINT: Let x represent ...
*November 26, 2012*

**algebra**

I NEED HELP!! The table shows the annual consumption of cheese people in the United States foor selected years in the nineteenth century. What cubic model best fits this data? Year Pounds Consumption 1915 4.156 1922 4.857 1946 7.16 1991 29.989
*November 26, 2012*

**Chemistry105**

How many grams of NaCI are therein exactely 25.00 mL of a 0.1053 M solution of the salt?
*November 25, 2012*

**Chemistry**

Thank you so much!
*November 18, 2012*

**Chemistry**

Ca(OH)2 has a Ksp of 6.5 x 10^-6. If 0.37 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated?
*November 18, 2012*

**Algebra**

Ray and Stella are both given jobs by the same company. Ray is to be paid a basic salary of $3000 each month. He will get a raise of $100 after the first month and every month thereafter he will get a raise of $100 more than the preceding month. Stella will be paid a basic ...
*November 18, 2012*

**Algebra**

Barbara and her husband take a trip on a highway, a distance of 600 miles. They intend to average 60 m.p.h. and take 10 hours. However, they take 11 hours due to construction. When they encounter the construction, they reduce their speed to 40 m.p.h. and proceed at this speed ...
*November 18, 2012*

**Algebra**

Jamie ran two laps around a track in 99 s. How long did it take him to run each lap if he ran the first lap at 8.5 m/s and the second at 8.0 m/s?
*November 16, 2012*

**Algebra**

Jan can run at 7.5 m/s and Mary at 8.0 m/s. On a race track Jan is given a 25m head start, and the race ends in a tie. How long is the track?
*November 16, 2012*

**Algebra**

Jan can run at 7.5 m/s. On a race track Jan is given a 25m head start, and the race ends in a tie. How long is the track?
*November 16, 2012*

**calculus**

1)A function g is defined for all real numbers and has the following property: g(a+b) - g(a) = 4ab+2b2 find g'(x) A)4 B)-4 C)2x^2 D)4x E)does not exist not so sure where to start 2)If d/dx[f(x)] = g(x) and d/dx[g(x)] = f(3x, then d^2/dx^2 [f(x^2)] is A)4x^2 f(3x^2) + 2g(x^...
*November 15, 2012*

**math**

kevin has a rabbit,a ferret,a gerbil,and a turtle. he feeds them in a different order every day. in how many different orders can kevin feed his pets
*November 13, 2012*

**Physics Lab Question, Help Please**

Two speakers, A and B, are emitting identical, synchronized (in-phase) sound waves at 240kHz. A person standing a point C hears a relatively loud sound. She then starts walking towards point D, and notices the sound gets quieter, reaching a minimum when she arrives at D. The ...
*November 12, 2012*

**Algebra**

An apple orchard charges a fixed amount for the first four bushels of apples purchased and an extra amount for each additional bushel purchased. If the cost of 11 bushels of apples is $33 and the cost of 19 bushels is $55, what is the fixed charge for the first four bushels of...
*November 10, 2012*

**math organized list**

tonya and lauren are desinging a soccer uniform they want to use two colors on the shirt their choices are green orange yellow purple blue and silver how many ways can they choose two colors?
*November 8, 2012*

**math algebra**

Mrs. martinez has $10,000 to invest.One bank offers her a return of 7.5% on the whole sum. Another bank offers her a return of 8% on part of the sum, and 6% on the rest of the sum. How much of the $10,000 would need to be invested at 8% at the second bank, for the overall to ...
*November 7, 2012*

**Trigonometry **

How do u find the angles of a triangle whose sides are in the ratio 2:4:5?
*November 6, 2012*

**Physics**

how much potential energy does Tim, with a mass of 62.0kg, gain when he climbs a gymnasium a distance of 3.8m?
*November 5, 2012*

**Physics**

Thank ya chile
*November 5, 2012*

**Physics**

how much potential energy does Tim, with a mass of 62.0kg, gain when he climbs a gymnasium a distance of 3.8m?
*November 5, 2012*

**university of phoenix**

appendix e1 diagram IT/240
*November 5, 2012*

**physics**

A wet towel of mass 4 kg is hung in the center of a 6 m clothesline, so that the line makes an angle 10o with the horizontal. The tension in the line is closest to... 50N, 40N, 100N, 200N, or 10N
*November 3, 2012*

**college physics**

A 90 kg rock climber is stationary off the side of an overhanging cliff hanging onto her climbing rope. Another rope is tied to her foot and is attached at the other end to her 30 kg rock-climbing dog, also hanging out 2 m below her. Tied to the dog’s foot is yet another ...
*November 3, 2012*

**college physics**

A wet towel of mass 4 kg is hung in the center of a 6 m clothesline, so that the line makes an angle 10o with the horizontal. The tension in the line is closest to... 50N, 40N, 100N, 200N, or 10N
*November 3, 2012*

**Algebra**

i'm a 2 digit number. the sum of my digit Is 12.my tens digit is 4 more than my ones digit. what numberam i ?
*November 2, 2012*

**Math problem**

Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give $21,000 in exchange for 1/3 of the stock. The $21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will now have equal share of stock. How much of...
*October 29, 2012*

**Algebra**

If (8c-7d)/(d)=2, find the value of (5c-6d)/(2c)
*October 29, 2012*

**Accounting**

Inventory as of Nov. 30th, 2010, consists of 20 bikes costing $550 each. Balance Sheet: Nov. 30th 2010. Cash-9150 Debit Accounts Receivable-12300 Debit Inventory-11000 Debit Supplies-900 Debit Office Equipment-18000 Debit Accumulated Depreciation, Office Equipment- 3000 Credit...
*October 25, 2012*

**science**

These are the 3 questions that will help me study for my test. i need help understanding each of these thankyou :) Distinguish between microevolution and macroevolution. Explain how forest organisms (producers and consumers) separated by a highway could evolve into different ...
*October 22, 2012*

**Statistics**

In Professor White’s statistics course the correlation between the students’ total scores before the final examination and their final examination scores is r = 0.9. The pre-exam totals for all students in the course have mean 275 and standard deviation 50. The final...
*October 21, 2012*

**Math**

Just wondering what did you do in this log((7x-3)(25)/(x+3) = 2 to get 25(7x - 3)/(x+3) = 10^2 = 100?
*October 20, 2012*

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