Tuesday

September 23, 2014

September 23, 2014

Post a New Question | Current Questions

**College Chemistry**

For each trial, enter the amount of heat lost by the calorimeter, qcalorimeter. Be careful of the algebraic sign here and remember that the change in temperature is equal to the final temperature minus the initial temperature. Report your answer using 4 digits. Note, this is 1...
*Friday, April 12, 2013 at 5:39am*

**confederation college**

1.52 kg box slides 1.24 m a long a level surface.the co-efficient of kinetic friction between book and surface is 0.140.find the work done by friction?
*Thursday, April 11, 2013 at 11:53pm*

**college physics**

Juggles the clown stands on one end of a teeter-totter at rest on the ground. Bangles the clown jumps off a platform 2.5 m above the ground and lands on the other end of the teeter-totter, launching Juggles into the air. Juggles rises to a height of 3.8 m above the ground, at ...
*Thursday, April 11, 2013 at 9:56am*

**College Chemistry**

You weigh a sample of a monoprotic unknown acid and dissolve it in 50.00 mL of distilled water. Exactly half of this solution is titrated with Sodium Hydroxide to the phenolphthalein end point. The pH of the other half of the original solution is measured with a pH meter. The...
*Tuesday, April 9, 2013 at 4:31pm*

**stat probability**

At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?
*Monday, April 8, 2013 at 7:38pm*

**college Mathematics **

Can someone please help me with this I am not getting the same answers as the examples in the book. U={1,2,3,4,5,6,7,8} A={1,2,3,4,7,8} B={1,2,4,5} Determine (A'UB')n(AUB)'
*Monday, April 8, 2013 at 1:40am*

**Math-Statistics**

Assume that 60% of community college students are female. 1) If we pick 10 students at random justify why we can or cannot model this using a normal model. 2) Find the probability that 8 of the 10 students selected are female. 3) Find the probability that 8 of more of the 10 ...
*Monday, April 8, 2013 at 12:36am*

**Math probability**

Assume that 60% of community college students are female. 1) if we pick 100 students at random justify why we can or cannot model this using a normal model. 2) find the probability that between 50 and 70 of the 100 students selected are female. 3) fidn Q1 and Q3 for the middle...
*Monday, April 8, 2013 at 12:02am*

**LBCC**

At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?
*Sunday, April 7, 2013 at 11:06pm*

**College Chemistry**

The Water loss by the sample, and the percent by weight of water in the unknown hydrates is 34.78%H2O. which of the ten possible hydrates are the most likely ones to be your unknown based on the percent by weight?
*Sunday, April 7, 2013 at 4:27pm*

**math - college algebra**

If the rational function y = r(x) has the vertical asymptote x = 9, then as x →9+, either y → ____or _____
*Sunday, April 7, 2013 at 4:46am*

**Lincoln College Of New En**

26 Gasoline Mileage for Autos and Trucks – Of the top 10 cars and trucks based on gas mileage, 4 are Hondas, 3 are Toyotas, and 3 are Volkswagens. Choose one at random. Find the probability that it is Japanese, Japanses or German or not foreigh.
*Saturday, April 6, 2013 at 2:02pm*

**College math**

I really need to know the answer to this extra credit problem. Please help! A quantity, W, is directly proportional to X and the square of Y and inversely proportional to the cube of Z. W=3 when X=4, Y=2 and Z=4. What is the value of W when X=8, Y=9 and Z=6? Give answer to 3 ...
*Saturday, April 6, 2013 at 9:06am*

**college math**

A quantity, W, is directly proportional to X and the square Y, and inversely proportional to the cube of Z. W=3 when X=4, Y=2 and Z=4. What is the value of W when X=8, Y=9 and Z= 6? Give answer to 3 decimal places. Thanks in advance! I appreciate all the help! :)
*Friday, April 5, 2013 at 9:28pm*

**World Geography**

REVIEW 1.Canada currently ranks first in the world in which category? A. Total number of Internet users B. Percentage of college and university graduates<<<<<<<<; C. Literacy rate of adult population D. Average unemployment among citizens 2.The ...
*Friday, April 5, 2013 at 3:51pm*

**World Geography**

REVIEW 1.Which of the following statements about the natural resources of the United States is most accurate? A. The many agricultural resources of the United States have made up for its lack of other resources.<<<<<<<<< B. U.S. industry and ...
*Friday, April 5, 2013 at 3:49pm*

**college math**

A quantity, W, is directly proportional to x and the square of y and inversely proportional to the cube of z. W-3 when x=4,y=2 and z=4. What is the value of w, when x=5, y=5 and z=4. Give answer to three decimal places. Thanks so much!
*Friday, April 5, 2013 at 3:04pm*

**college math**

It takes Mike 8 minutes to walk to the store from his house. The return trip takes 13 minutes because he walks 1mph slower due to the bags he is carrying. How fast did Mike walk on his way to the store? Carry out one decimal place. Thanks in advance!
*Friday, April 5, 2013 at 2:34pm*

**college math**

I posted this problem earlier, but I still can't figure it out. It is for extra credit. I was hoping if someone could please solve it. I would greatly appreciate it. A bourbon that is 51 proof is 25.5% alcohol by vol. while one that is 82 proof is 41% alcohol by vol. How ...
*Friday, April 5, 2013 at 11:39am*

**Quantitative Reasoning ( College Freshman)**

For the quadratic function : y=-0.25(x+8)(x-6) write the function in the vertex form y=a(x-h)^2+k by completing the square. Show all work.
*Friday, April 5, 2013 at 9:40am*

**Quantative Reasoning College Freshman**

Using the formula y=-16t^2+vt+h help me with this word problem : A firework rocket is fired straight up into the air with an initial velocity of v=192ft/sec From the top of an apartment building h=48ft off the ground. The firework will explode when it reaches the peak (maximum...
*Friday, April 5, 2013 at 9:35am*

**Government senior college ikoyi**

An equilateral triangle of side 20cm is inscribed in a circle.calculate the distances of a side of the triangle from the centre of the circle.
*Friday, April 5, 2013 at 7:18am*

**Lincoln College Of New En**

How man 4 letter code words can be made using the letters in the word pencil if repetitions are permitted?
*Thursday, April 4, 2013 at 7:28pm*

**college algebra**

Find a symbolic representation for f^-1(x) f(x)=8/x-5 Thanks
*Wednesday, April 3, 2013 at 10:51pm*

**college algebra**

Find a symbolic representation for f^-1(x) f(x)=8/x-5 Thanks
*Wednesday, April 3, 2013 at 10:40pm*

**math**

35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected. Find the probability that: a. Exactly 3 people will agree with that position (taken by the 35% of the population) b. ...
*Wednesday, April 3, 2013 at 10:03pm*

**college algebra**

Find the local maximum and minimum values of the function and the value of x at which each occurs. State each answer correct to two decimal places. (If an answer does not exist, enter DNE.) U(x)=x√(5-x)
*Wednesday, April 3, 2013 at 6:35pm*

**college algebra**

Find (f°g)(2) when f(x)=5x+9 and g(x)=1/x Thanks
*Wednesday, April 3, 2013 at 5:43pm*

**college algebra**

f(x)=x-5 and g(x)=√3x, what us the domain of g°f ? Thanks
*Wednesday, April 3, 2013 at 5:02pm*

**college algebra**

f(x)=x^2-3 and g(x)=4x+1 to Evaluate (f-g)(-3) Then find (fg)(x) Thanks a million
*Wednesday, April 3, 2013 at 4:27pm*

**math**

35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected. Find the probability that: a. Exactly 3 people will agree with that position (taken by the 35% of the population) b. ...
*Wednesday, April 3, 2013 at 3:49pm*

**college algebra**

At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and the total cost function is given C(x)=8x+16, where x represents the number of boxes of computer chip produced. A. Find the profit function in P(x)=R(x...
*Wednesday, April 3, 2013 at 3:13pm*

**college algebra**

At Allied electronics, production has begun on x-15 computer chip. The total revenue function is given by. R(x)=47x-0.3x^2 and the total cost function is given C(x)=8x+16, where x represents the number of boxes of computer chip produced. A. Find the profit function in P(x)=R(x...
*Wednesday, April 3, 2013 at 2:41pm*

**college physics**

a tennis ball is thrown straight up with an initial velocity of 22.5 m/s. it is caught at the same distance above the ground. a). how long does it take to reach its maximum height? b). how high does the ball rise? c). at what speed does it hit the ground? d). what total length...
*Tuesday, April 2, 2013 at 11:53pm*

**math**

random sample of 9600 students. Multistage design effect similar to an SRS (for those still in school) 46% had at least one parent who was a college graduate. Estimate with 99% confidence the proportion of all students who had at least one parent who was a college grad. b) ...
*Tuesday, April 2, 2013 at 9:27pm*

**college algebra**

f(x)=√x-2 Find the domain of the function is it x-2 the range of function is it (00,-2) the domain of the inverse is it x>-2 The range of the inverse is it (-2,00) Thanks
*Tuesday, April 2, 2013 at 1:01pm*

**college algebra**

How much paper would you need to wrap a box 10cm wide, 25cm high, and 50cm long?
*Tuesday, April 2, 2013 at 12:20pm*

**college algebra**

I need help solving this equation. 3√z+1=-3 How do I do this problem? Thanks for your help.
*Monday, April 1, 2013 at 5:09pm*

**college math**

An initial investment of $1000 is appreciated for 4 years in an account that earns 6% interest, 2) compounded semiannually. Find the amount of money in the account at the end of the period.
*Sunday, March 31, 2013 at 4:45pm*

**math**

random sample of 9600 students. 46% had at least one parent who was a college graduate. Estimate with 99% confidence the proportion of all students who had at least one parent who was a college grad. b) Sample does not include drop outs so estimate is valid only for students. ...
*Sunday, March 31, 2013 at 3:50pm*

**College Statistics**

A random variable X has a Gamma distribution with (alpha = a, beta = b). Show that P(X > 2ab) < (2/e)^a. hint: X > c is equivalent to e^Xt > e^ct
*Saturday, March 30, 2013 at 3:05pm*

**statistics**

1. 35% of North Americans do not think that college education is a contributory factor to economic success. A random sample of seven North Americans is selected
*Friday, March 29, 2013 at 5:29pm*

**college physics**

a bus that is traveling at 30.0km/h speeds up at a constant rate of 3.5m/s2. what velocity does it reach 6.8s later?
*Friday, March 29, 2013 at 5:29pm*

**college physics**

a bicyclist rides off a flat roof at 13.4m/s, the roof is 3.6m above the ground, how far from the edge of the building does the bicyclist land? round the answer to the nearest meter.
*Friday, March 29, 2013 at 5:28pm*

**college physics**

an airplane starts from rest and accelerates at a constant 3.00m/s2 for 30.0s before leaving the ground. a). how far did it move? b). how fast was the airplane going when it took off?
*Friday, March 29, 2013 at 5:26pm*

**college physics**

a woman driving at a speed of 23 m/s sees a deer on the road ahead and applies the brakes when she is 210m from the deer. if the deer does not move and the car stops right before it hits the deer, what is the acceleration provided by the car's brakes?
*Friday, March 29, 2013 at 5:25pm*

**valencia college**

can 4/5 be the probability of an event
*Friday, March 29, 2013 at 3:35pm*

**Statistics**

Hello. I would like to ask a college statistics question. Q. One hundred draws are made at random with replacement from the box [1,2,2,5]. The draws come out as follows:17 [1]'s, 54 [2]'s, 29 [5]'s. Fill in the blanks, using the options below; show work. (a) For ...
*Thursday, March 28, 2013 at 4:56pm*

**college algebra**

P=t^2-35t+300 the profit made when t units are sold t>0, is given by P=t^2-35t+300. Determine the number units to be sold in order for P<0 (a loss is taken). How do I solve this? Thanks for your help.
*Wednesday, March 27, 2013 at 7:49pm*

**college algebra**

Solve the equation. How do you solve a fraction? X^2/3=1/16 Thanks
*Wednesday, March 27, 2013 at 7:25pm*

**10 grade algebra**

please help with this problem Your dad is taking Biology as part of the veterinarian program at the local community college. This semester he will spend a total of 40 hours in the biology lab, and he will take notes in class 6 hours per week. Define a variable for the number ...
*Wednesday, March 27, 2013 at 7:06pm*

**college algebra**

Solve the equation. How do you solve a fraction? X^2/3=1/16 Thanks
*Wednesday, March 27, 2013 at 6:21pm*

**college algebra**

Rational equation -5/x-3 - 3/x+3=2/x^2-9 how do I solve?
*Wednesday, March 27, 2013 at 4:14pm*

**Englisj**

1. Which of the following is NOT an example of persuasive writing? a position paper from an elected official a college admissions essay a movie review *a summary of a textbook reading assessment 2. Identify the following as a fact or an opinion: “Video games are too ...
*Wednesday, March 27, 2013 at 1:47pm*

**College algebra**

Use the rationals theorem to find all the zeros of the polynomial function. Use the zeros to factor f over the real numbers, F(x)=7x^3-x^2+7x-1
*Wednesday, March 27, 2013 at 12:23pm*

**College Algebra**

Use the rational zeros theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x)=2x^3-x^2+2x-1
*Wednesday, March 27, 2013 at 8:15am*

**college algebra**

√3x+7=3x+5 How do I solve when the answer is -1?
*Wednesday, March 27, 2013 at 1:03am*

**algebra 10th grade**

please help with this problem Your dad is taking Biology as part of the veterinarian program at the local community college. This semester he will spend a total of 40 hours in the biology lab, and he will take notes in class 6 hours per week. Define a variable for the number ...
*Tuesday, March 26, 2013 at 8:41pm*

**College Algebra! help!**

Form a polynomial f(x) with the real coefficients having the given degree and zeros. Degree 5; Zeros: -4; -i; -2+i f(x)=a( )
*Tuesday, March 26, 2013 at 8:23pm*

**College Algebra**

Form a polynomial f(x) with real coefficients having the given degree and zeros. Degree 5; Zeros: -3; -i; -6+i F(x)=a ( )
*Tuesday, March 26, 2013 at 7:14pm*

**College algebra**

Form a polynomial f(x) with the real coefficients having the given degree and zeros. Degree 5; Zeros: -3; -i; -6+i f(x)=a( )
*Tuesday, March 26, 2013 at 6:42pm*

**College algebra**

Use the rationals theorem to find all the zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x)=x^3-2x^2-13x-10 x=
*Tuesday, March 26, 2013 at 5:07pm*

**college physics**

A 30.3-kg child starting from rest slides down a water slide with a vertical height of 10.5 m. (Neglect friction.) (a) What is the child's speed halfway down the slide's vertical distance?
*Monday, March 25, 2013 at 10:54pm*

**Proctology**

Hi, I am an 11th grade student beginning to look into some college options. I am interested in pursuing a career in proctology and have been reading some preliminary books on the topic. Can anyone recommend a college or pre-med program that would offer a strong proctology ...
*Monday, March 25, 2013 at 8:53pm*

**college algebra**

I'm stuck on 2 problems I know the answers but need to learn to show the work. X^4+x^3=16-8x-6x^2. Answer: -2,1,+-√8 3x^3+4x^2+6=x. (-2,1/3, i√8/3) Please help so I know how to figure these equations out.A big THANKS
*Monday, March 25, 2013 at 7:53pm*

**College algebra**

Form a polynomial f(x) with real coefficents having the given degree and zeros degree 5; zeros: 5; -i; -9 +i f(x)=a
*Monday, March 25, 2013 at 1:49pm*

**College Gen. Math**

There are 6 times as many dimes as quarters, and 6 times more nickels than quarters. If you have $5.70, how much money do you have in quarters?
*Monday, March 25, 2013 at 12:06pm*

**College Physics**

A child's toy consists of a toy car of mass 0.100kg which is able to roll without friction on the loop-the-loop track shown. The car is accelerated from rest by pushing it with force F over a distance d, then the car slides with a constant velocity until it encounters the ...
*Sunday, March 24, 2013 at 10:36pm*

**College algebra**

Find the vertical, horizontal, and qblique asymptotes, if any, for the following rational function. T(x)=x^2/x^4-256
*Sunday, March 24, 2013 at 9:34pm*

**college algebra **

determine the vertical asymptotes of the graph of function.g(x)=x^3 diveded by 5x^3-x^2-22x
*Sunday, March 24, 2013 at 8:22pm*

**MA 107 college algebra**

Simplify the expression using the power rule.(3to the power of 2)to the power of 5
*Sunday, March 24, 2013 at 7:38pm*

**MA 107 college algebra**

Each side of a square is lengthened by 2 inches. The area of this new, larger square is 81 square inches. Find the length of a side of the original square.
*Sunday, March 24, 2013 at 7:34pm*

**college math **

How many different committees can be formed from 9 teachers and 39 students if the committee consists of 2 teachers and 3 students? In how many ways can the committee of 5 members be selected?
*Sunday, March 24, 2013 at 4:54pm*

**College Algerbra**

Solve the inequality. 0.1(0.1x+0.1) _< -0.8
*Sunday, March 24, 2013 at 3:24pm*

**College Algerbra**

Solve the inequality. - 5x / 7 -2>-1
*Sunday, March 24, 2013 at 3:20pm*

**College Algerbra**

THE TEMPERATURE ON A SUMMER DAY IS // DEGREES FAHRENHEIT.the formula to convert the temperature to degrees Celsius is C = 5/9(F-32) what is the corresponding temperature in degrees Celsius?
*Sunday, March 24, 2013 at 3:10pm*

**math**

Mark averaged 60 miles per hour during the 30-mile trip to college. Because of heavy traffic he was able to average only 40 miles per hour during the return trip. What was Mark's average speed for the round trip?
*Sunday, March 24, 2013 at 2:37pm*

**chemistry 2 college**

explain how to find the mass of solute in the solution: 50.0g of solvent in a 10.0% NaCl solution?
*Sunday, March 24, 2013 at 12:25pm*

**college algebra**

A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.
*Saturday, March 23, 2013 at 6:00pm*

**college algebra**

A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.
*Saturday, March 23, 2013 at 5:31pm*

**college algebra**

A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)
*Saturday, March 23, 2013 at 5:19pm*

**college algebra**

A rectangular box with no top is to be constructed from a 10 in. x 10 in square piece of cardboard by cutting equal square of side x from each corner and then bending up the sides. Write the volume of the box as a function of x.
*Saturday, March 23, 2013 at 4:58pm*

**college algebra**

A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)
*Saturday, March 23, 2013 at 4:42pm*

**College math**

Rebekah's recipe for 41/2 dozen cookies call for 6 cups of sugar. How many cups of sugar are needed to make 8 dozen cookies?
*Saturday, March 23, 2013 at 4:23pm*

**psychology**

2. Last week, Roger suddenly quit his job. He told his family he had decided to learn carpentry. He purchased a truckload of wood and nails, which now sits in his driveway because he changed his mind and decided to enroll in a school for massage therapy. The school confirms ...
*Friday, March 22, 2013 at 9:21am*

**college**

A solid is known to be either BaCO3 or CaCO3. It is dissolved in 6 M acetic acid. A pale yellow precipitate forms when K2CrO4 solution is added. The subsequent flame test with that precipitate shows an orange-red color. Which cation is present? Briefly explain
*Friday, March 22, 2013 at 12:28am*

**college algebra**

x^3+4x^2-2x-3 ; x+1 factor theorum to decide whether or not second polynomial is a factor of the first.
*Thursday, March 21, 2013 at 8:01am*

**college stats**

iN manoa Valley on the island of Oahu Hawaii the annual rainfall averages 43.6 inches with a standard diviation 7.5 inches. for a given year, find the probability that the annual rainfall will be..(solve for a,b,and c) show work a)more than 53 inches b)less than 28 inches c)...
*Thursday, March 21, 2013 at 12:49am*

**College Math**

I need help solving these problems by using the substitution problem 2x-3y=16 5x+2y=21
*Wednesday, March 20, 2013 at 11:28am*

**college- find domain and range**

y= X^2 + X - 500/10 and y is the number of milliliters of fuel consumed per second and X is the speed of the engine in revolutions per minute. If the engine operates between 100 revolutions per minute and 400 revolutions per minute what is the domain and range Is this correct...
*Wednesday, March 20, 2013 at 11:12am*

**college physics**

If the initial tension in the string is (2.10+/- 0.02)N, what is the tension that would double the wave speed?
*Wednesday, March 20, 2013 at 1:28am*

**college chemistry**

for my lab i used 2.0mL of NaOH solution and it doesnt have a density in (g/mL)... is there still a way to calculate the moles to it? unless there is a density to NaOH
*Tuesday, March 19, 2013 at 9:33pm*

**English**

Please help with this question that has been bothering me! I take bio college class and we have graduate/student assistant for labs & when taking an exam. The professor is never there during those sections.Due to my low exam results,I feel I'm not being graded on fairly ...
*Tuesday, March 19, 2013 at 8:36pm*

**Arithmetic**

A box in a college bookstore contains books, and each book in the box is a history book, an English book or a science book. If one-third of these books are history books and one-sixth are English books, what fraction of the books are science books? A. 1/3 B. 1/2 C. 2/3 D. 3/4...
*Tuesday, March 19, 2013 at 10:24am*

**Arithmetic**

A box in a college bookstore contains books, and each book in the box is a history book, an English book or a science book. If one-third of these books are history books and one-sixth are English books, what fraction of the books are science books?
*Tuesday, March 19, 2013 at 10:23am*

**college algebra**

Solve, what is the easiest way to solve this equation? 9x^4+4=13x^2 and x^6-19x^3=216 Thanks, in advance..
*Tuesday, March 19, 2013 at 12:08am*

**college physics**

for the resonance frequencies: fn=nv/2L If the speed (v) doubles my fn will also doubles ? why?
*Monday, March 18, 2013 at 10:03pm*

**College Math - Probability**

Briefly summarize the experimental design for deciding whether a proposed treatment should go on for further study. Note where independence came into play. If you were more conservative and reject the treatment only if the probability that it is 30% effective is less than .05 ...
*Monday, March 18, 2013 at 7:56pm*

**College Mathematics**

Counting principles and permutations. A social security number consists of 9 digits. How many different social security numbers are possible if repetition of digits is permitted. digits 0-9
*Monday, March 18, 2013 at 2:09pm*

**College Mathematics**

U.S. Presidents. The ages of the 44 presidents at their first inauguration (as of 2011) are: 57 57 49 52 50 42 54 55 64 61 61 64 56 47 51 51 56 46 57 54 50 46 55 56 60 61 54 57 68 48 54 55 55 62 52 47 58 51 65 49 54 51 43 69 a. Construct a frequency distribution with a first ...
*Monday, March 18, 2013 at 2:04pm*

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Post a New Question | Current Questions