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March 1, 2015

March 1, 2015

Post a New Question | Current Questions

**ALGEBRA**

SOLVE IN LINEAR EQUATION? A university bookstore recently sold a wirebound graph paper notebook for $1.08, and a college ruled notebook for $3.12.At the start of the spring semester, a combination of 50 of these notebooks were sold for a total of $88.68 .How much of each type ...
*Wednesday, March 28, 2012 at 3:51pm*

**Economics**

Aside from humanitarian concerns, which of the following is one reason on nation is motivated to provivde foreign aid to a less developed country? A. Foreign aid is tax deductible B. The nation providing foreign aid decreases its unemployment. C. The nation providing foreign ...
*Wednesday, March 28, 2012 at 2:12pm*

**college statistic and algebra**

1.suppose that the demand forecast indicate that 1800 units of the product can be sold. the fixed cost is $3,000, the variable cost is $2 for each unit product and selling price $10 per unit. the decision to produce and sell 1800 units in a projected profit of? 2. what is the...
*Wednesday, March 28, 2012 at 11:39am*

**college algebra**

Determine the principal P that must be invested at rate r = 3 1 2 %, compounded monthly, so that $700,000 will be available for retirement in t = 13 years. (Round your answer to the nearest cent.) P = $
*Wednesday, March 28, 2012 at 11:29am*

**English**

Hi I'm doing a mla research paper for my college English class. My topic is What is Lupus? I having a difficult time coming up with a thesis for this topic. If anybody has any ideas please respond. Thanks
*Wednesday, March 28, 2012 at 10:32am*

**Transistion to College Math**

A rifle bullet is fired vertically with initial speed 490 m/s. how long does it take the bullet to reach its greatest height?
*Wednesday, March 28, 2012 at 2:27am*

**statistics**

Suppose that SAT scores among U.S. college students are normally distributed with a mean of 450 and a standard deviation of 150. What is the probability that a randomly selected individual from this population has an SAT score at or below 600?
*Tuesday, March 27, 2012 at 6:44pm*

**College physics**

Consider the two situations. In the first a machine must pull a box up a rough slope at constant speed. The mass of the box is 800 kg, the coefficient of kinetic friction is 0.2, and the slope is inclined at 15 degrees to the horizontal. In the second situation the machine ...
*Tuesday, March 27, 2012 at 1:09pm*

**College Chemistry**

In a reaction vessel, the following reaction was carried out using 0.250 mol of NH3(l) and 0.100 mol of N2(g). 4NH3(l) + N2(g) ¡ú 3N2H4(l) Which of the following represents the composition in moles in the vessel when the reaction reaches completion? ¡Ö0...
*Monday, March 26, 2012 at 9:23pm*

**College Chemistry**

Consider the following reaction. 3Ca(s) + N2(g) ¨ Ca3N2(s) What is the theoretical yield in grams for the reaction if 10.50 g of calcium reacts with 5.50 g of N2?
*Monday, March 26, 2012 at 9:22pm*

**College Chemistry**

The maximum amount of product D that can be produced from the following reaction is 55.75 g. 2A + B ¨ 2C + 3D Following an experiment based on this reaction, when the D was isolated, 50.67 g of D were obtained. What is the percent yield for this particular experiment?
*Monday, March 26, 2012 at 9:22pm*

**College Chemistry**

Consider the reaction. 4Fe(s) + 3O2(g) ¨ 2Fe2O3(s) If 0.500 mol of Fe reacts with 0.400 mol of O2, what are the limiting reactant and the theoretical yield in moles of Fe2O3 for the reaction, respectively?
*Monday, March 26, 2012 at 9:21pm*

**College Chemistry**

Animals break down glucose (C6H12O6) as a source of energy according to the following overall reaction. C6H12O6(aq) + 6O2(g) ¨ 6CO2(g) + 6H2O(l) What mass in grams of CO2(g) is produced from the reaction of 15.0 g of glucose?
*Monday, March 26, 2012 at 9:21pm*

**College Chemistry**

For the following reaction: A + 3B ¨ 4C Which of the following provides the direct link between the amount of reactant A and the amount of product C?
*Monday, March 26, 2012 at 9:20pm*

**College Chemistry**

Consider the following symbolic reaction in which the hypothetical elements hearts (¢¾) and diamonds (♦) react to produce the compound spades (¢¼). ¢¾ ¢¾ ¢¾ ¢¾ + ♦ ¡æ ¢¼...
*Monday, March 26, 2012 at 9:19pm*

**College Chemistry**

Consider the following reaction that occurs when natural gas is burned. CH4(g) + 2O2(g) ¨ CO2(g) + 2H2O(g) How many moles of water are produced when 6.2 mol of methane are burned? Assume that there is more than enough oxygen present.
*Monday, March 26, 2012 at 9:18pm*

**College Math**

A spherical balloon has a radius of 9 centimeters. Find the amount of air required to fill the balloon. Round to the nearest hundredth
*Monday, March 26, 2012 at 5:00pm*

**College Physics**

A 1.75-kg wooden block rests on a table over a large hole as in the figure below. A 4.60-g bullet with an initial velocity vi is fired upward into the bottom of the block and remains in the block after the collision. The block and bullet rise to a maximum height of 24.0 cm. ...
*Monday, March 26, 2012 at 12:57pm*

**Statistics**

A social psychologist asked 15 college students how many times they "fell in love" before they were 11 years old. The numbers of times were as follows: 2,0,6,0,3,1,0,4,9,0,5,6,1,0,2 make (a) a frequency table and (b) a histogram. Then describe the general shape of ...
*Monday, March 26, 2012 at 1:07am*

**college physics**

A 0.50-kg block slides along a small track with elevated ends and a flat central part. The flat part has a length L = 1.85 m. The curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is 0.103. The block is released from rest ...
*Sunday, March 25, 2012 at 11:35pm*

**child psychology**

I still need help with this question Which young adult is at risk of long term identity foreclosure or diffusion? A. A college graduate who switces majors B. An aspiring chef who has no opportunity for culinary training. C.A young woman with several possible vocational choices...
*Sunday, March 25, 2012 at 10:07pm*

**COLLEGE ALGEBRA**

An investment of $63,000 was made by a business club. The investment was split into three parts and lasted one year. The first part of the investment earned 8% interest, the second 6% and the third 9%. Total interest from the investments was $4950. The interest from the ...
*Sunday, March 25, 2012 at 9:01pm*

**Statistics**

A study is being planned to estimate the mean number of semester hours taken by students at a college. The population standard deviation is assumed to be o=4.7 hours. How many students should be included in the sample to be 99% confident that the sample mean is within one ...
*Sunday, March 25, 2012 at 2:31am*

**COLLEGE ALGEBRA**

An investment of $63,000 was made by a business club. The investment was split into three parts and lasted one year. The first part of the investment earned 8% interest, the second 6% and the third 9%. Total interest from the investments was $4950. The interest from the ...
*Saturday, March 24, 2012 at 10:37pm*

**math**

the heights of 1000 students in a college are normally distributed with a mean 5'10" and a SD of 2". Use 68% for the region from the mean to 1-SD on either side; 94% for the region from the mean to 2-SD on ether side and 98% for the region from the mean to 3-SD ...
*Saturday, March 24, 2012 at 9:44am*

**child psychology**

which young adult is long-term identitity foreclosure or diffusion A. college graduate who switches majors B.An aspiring chef who has no opportunity for culinary training. C.A young woman with several possible vocational choices. D.A peace corps volunteer. My choice is D. Am I...
*Friday, March 23, 2012 at 10:02pm*

**statistics**

At a small college it is known from previous years that 35% of all college freshman start in college algebra. The new freshman class has 100 students in it, What is the probability that between 35 and 42 freshman will start in college algebra? Is it reasonable to approximate ...
*Friday, March 23, 2012 at 11:36am*

**College Physic**

2) A car traveling with 5 m/s encounters a deer. The drivers slams on the breaks, the breaks lock. The car skids to a complete stop on the road ahead (and the deer runs away). Why does the car stop (where does all the kinetic energy it had go)? Find the magnitude of the ...
*Friday, March 23, 2012 at 1:52am*

**Algebra**

A university bookstore recently sold a wirebound graph paper notebook for $1.08, and a college ruled notebook for $3.12.At the start of the spring semester, a combination of 50 of these notebooks were sold for a total of $88.68 .How much of each type were sold?
*Thursday, March 22, 2012 at 12:55pm*

**College Physics**

suppose the two cars are headed in the same direction. A 1200kg car travels at 65 mph and a 1000kg car travels at 75mph. The faster car rear-ends the slower car and their bumpers catch so that they continue moving after the collision at the same speed. Use the concepts above ...
*Thursday, March 22, 2012 at 12:12pm*

**College Algebra**

The illumination produced by a light source is inversely proportional to the square of the distance to the source. If a light source 5m from an object illuminates with 70 candela, what illumination would be produce if the object were mover to 12 m away? not sure how to set ...
*Wednesday, March 21, 2012 at 8:43pm*

**statistics**

Musical styles other than rock and pop are becoming more popular. A survey of college students finds that 48% like country music, 30% like gospel music, and 10% like both. What is the conditional probability (±0.01) that a student likes gospel music, given that he or ...
*Wednesday, March 21, 2012 at 12:36pm*

**college Algebra**

If y varies directly as x^2 and y=20 when x=4, find y when x=7?
*Wednesday, March 21, 2012 at 9:51am*

**College Algebra**

if y vaires directly as x^2 and y=20 when x=4, find y when x=7?
*Wednesday, March 21, 2012 at 9:50am*

**college algebra**

if y vaires directly as x^2 and y=20 when x=4, find y when x=7? I got 61.25 but was not sure if it was correct...
*Tuesday, March 20, 2012 at 8:08pm*

**alg 1 college**

can you guys please help me wwith a math problem, its asking to solve this equatoion, sqare root5x-4=3x-18. to fkire off first 5x-4= 3x-18 squared. foil thatand you are looking AT 9x squared -54x -54x+324/ add the -54 to 108x.then shoot the 5x to to the 108x and subbtract 5x ...
*Tuesday, March 20, 2012 at 2:21pm*

**Math**

For a poll, 60 students were selected at random from the 6000 students at Calgon Community College. It turns out that 12 were in favor of higher parking fees to support extra police patrols of parking lots on campus. In this example, the sample proportion is:
*Tuesday, March 20, 2012 at 12:59am*

**STATISTICS**

Suppose that, for students who are enrolled in college algebra, 78 percent are freshmen, 40 percent are female, and 28 percent are female and are freshmen. Your answers below should be entered as decimals and rounded to three decimal places. (a) One student will be selected at...
*Monday, March 19, 2012 at 10:28pm*

**Books**

are Dean Koontz books appropriate for 12 year olds?- even if he/she is an advanced reader that read college book?
*Monday, March 19, 2012 at 8:27pm*

**Mystery Fiction**

What is a good mystery fiction book for adults (college level or adult)?
*Monday, March 19, 2012 at 7:35pm*

**english**

F. Scott Fitzgerald dropped out of college to
*Monday, March 19, 2012 at 7:11pm*

**statistics**

Suppose that, for students who are enrolled in college algebra, 73 percent are freshmen, 48 percent are female, and 31 percent are female and are freshmen. Your answers below should be entered as decimals and rounded to three decimal places. Two students will be independently ...
*Monday, March 19, 2012 at 2:15pm*

**college physics**

An 82.0 kg skydiver jumps out of a balloon at an altitude of 1 500 m and opens the parachute at an altitude of 195 m. (a) Assuming that the total retarding force on the diver is constant at 55.0 N with the parachute closed and constant at 3 600 N with the parachute open, what ...
*Monday, March 19, 2012 at 2:03pm*

**college algebra**

a rectangular box has a volume of V(x)=x^3+13x^2+50x+56 cubic inches. The height of the box is x+7 inches. The width of the box is x+4 inches. Find the length of the box in terms of x.
*Sunday, March 18, 2012 at 9:59pm*

**algebra college**

multiply and simplify 3^-2-3^6
*Sunday, March 18, 2012 at 7:11pm*

**college algebra**

what is the domain and range of f(x)=5^-x +5
*Saturday, March 17, 2012 at 6:38pm*

**College Physics**

A 42-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 220 J from 460 J. How high does she rise during this interval? Neglect air resistance. Just wondering how to solve this.
*Friday, March 16, 2012 at 11:26pm*

**college math**

Let p represent the statement, "Jim plays football", and let q represent "Michael plays basketball". Convert the compound statements into symbols.
*Friday, March 16, 2012 at 2:06am*

**college math**

construct a truth table for (p ^ q) <--> ~q and submit it to the dropbox
*Friday, March 16, 2012 at 1:59am*

**math analysis**

how many faculty of each rank should be hired at each college to exactly meet the demand for sections and completely exhaust the salary budget Rank table. Lecture. Instrutor Section taught. 3. 4 annual salary. 20. 25 (Thousands $) Table. Community college 1. 2. 3 demand for ...
*Thursday, March 15, 2012 at 11:39pm*

**College Physics**

Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 43.5 km/s and 54.0 km/s. The slower planet's orbital period is 6.53 years. (a) What is the mass of the star? (b) What ...
*Thursday, March 15, 2012 at 10:22pm*

**College Physics**

A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 28.2 ° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 46.7 kg, and the coefficient of kinetic ...
*Thursday, March 15, 2012 at 10:15pm*

**College Physics**

A 45.7-g golf ball is driven from the tee with an initial speed of 46.0 m/s and rises to a height of 25.9 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 6.82 m below its highest point?
*Thursday, March 15, 2012 at 9:33pm*

**College Physics**

A 42-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 220 J from 460 J. How high does she rise during this interval? Neglect air resistance. The quarter is over but I am still trying to ...
*Thursday, March 15, 2012 at 8:24pm*

**algebra**

At local community college, it costs $150 to enroll in a morning section of an algebra course. Suppose that the variable n stands for the number of students who enroll. Then 150n stands for the total amount of money collected for this course. How much is collected if 34 ...
*Thursday, March 15, 2012 at 7:43pm*

**College Physics**

A 22 turn circular coil of radius 5.00 cm and resistance 1.00 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.0100t + 0.0400t2, where t is in seconds and B is in...
*Thursday, March 15, 2012 at 1:29am*

**College Physics - Acceleration**

A 1470-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16070 N on the sub, as well as a downward resistive force of 1050 N. What is the submarine's acceleration?
*Wednesday, March 14, 2012 at 9:05pm*

**College Physics - Speed**

Traveling at a speed of 15.6 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.730. What is the speed of the automobile after 1.25 s have elapsed? Ignore the effects of ...
*Wednesday, March 14, 2012 at 9:03pm*

**College Physics - Weight**

A planet has a mass of 7.93 × 1023 kg and a radius of 2.58 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 67.0-kg person weigh on this planet?
*Wednesday, March 14, 2012 at 8:58pm*

**College Physics**

A bowling ball (mass = 4.4 kg, radius = 0.11 m) and a billiard ball (mass = 0.35 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other? What equation should I use with this since ...
*Wednesday, March 14, 2012 at 8:56pm*

**Statistics Question (Confidence Interval)**

A sample of 15 recent college graduates found that starting salaries for attorneys in New York City had a mean of $102,342 and a standard deviation of $21,756. Construct a 95% confidence interval for the average starting salary of all attorneys in the city. A. (89869.82, ...
*Wednesday, March 14, 2012 at 11:15am*

**St,gregory's college math**

How can i divide 34by5 leaving answer in decimal
*Tuesday, March 13, 2012 at 6:58pm*

**College Physics**

It takes 164 kJ of work to accelerate a car from 23.7 m/s to 27.8 m/s. What is the car's mass? I tried using this equation but it didn't work KE = 1/2mv^2
*Monday, March 12, 2012 at 10:16pm*

**Math**

In which one of the following sentences is the number written correctly? A. One-hundred and thirty-two people lined up to buy the tickets B. John just paid $33 thousand for his new car C. The parcel of land was advetised a two hundred forty-three and three quarters acres D. ...
*Monday, March 12, 2012 at 6:53pm*

**college math**

1). Sum of three numbers is 45. One number is five more than the second number.It is also twice the third.Find the numbers. 2).Perimeter of quadrilateral is 52in. Longest side is is three times as long as the shortest side. The other two sides are equally long and are 5 in. ...
*Sunday, March 11, 2012 at 8:26pm*

**HELP! College Physics**

A skateboarder shoots off a ramp with a velocity of 6.7 m/s, directed at an angle of 59° above the horizontal. The end of the ramp is 1.1 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point ...
*Saturday, March 10, 2012 at 4:10pm*

**College Physics**

(a) What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 9.62 m/s when going down a slope for 4.00 s? (b) How far does the skier travel in this time?
*Saturday, March 10, 2012 at 2:47pm*

**college Math**

perform the indicated operation, give answer in scientific notation. (5x10^2)x(5.6x10^4)
*Saturday, March 10, 2012 at 12:32pm*

**Literacy**

2. Utilizing the publication search function on EDSeek's Home page, which of the following companies publishes Pediatric Nursing? A. Royal College of Nursing Publishing Company B. Elsevier Science Publishers C. Jannetti Publications, Inc. D. Advanstar Communications, Inc. ...
*Saturday, March 10, 2012 at 2:10am*

**College Physics**

A proton moves with a velocity of vector v = (6ihat - 1jhat + khat) m/s in a region in which the magnetic field is vector B = (ihat + 2jhat - 3khat) T. What is the magnitude of the magnetic force this charge experiences? answer in Newtons. I tried F=qvb but the vectors are ...
*Saturday, March 10, 2012 at 1:48am*

**college math**

boat travels 160 miles downstream in the same time that it takes to go 96 upstream. the pead of the stream is 6 mph. what is the speed of still water
*Friday, March 9, 2012 at 4:57pm*

**college math**

I am not understading the concept of this problem pleaase help. 5/22divided by 1/41 reduced to the lowest terms
*Thursday, March 8, 2012 at 8:42pm*

**math**

enrollment at a college has 8500 students enrolled, there aer 1/3students over 25 as there are under 25. how mant are over 25 how many are under 25
*Thursday, March 8, 2012 at 8:04pm*

**college math **

find the lest common denimator and add the fractions 1/125 plus 4/50
*Thursday, March 8, 2012 at 7:53pm*

**college math**

find the lest common denominatorfor 1/225 plus 4/50 and add the fractions
*Thursday, March 8, 2012 at 7:48pm*

**college math**

14/7 divided by 4/10 reduced to lowest terms
*Thursday, March 8, 2012 at 7:38pm*

**college physics**

a 1.0 N-weight is hanging at rest as shown. In each case, write in the magnitude of the unknown force. a) chain with a weight of 2.5 N has a 1.0 N hanging weight b) chain with a weight of .5 N has a 1.0 N hanging weight c) stretched elastic band with negligible weight has a 1....
*Thursday, March 8, 2012 at 12:15pm*

**Catering(Gourmet Essentials)**

THURSDAY March 8, 2012 SCHOOL SUBJECTS - Art - Business - Computers - English - Foreign Languages - Health - Home Economics - Math - Music - Physical Education - Science - Social Studies GRADE LEVELS - Preschool - Kindergarten - Elementary School - 1st Grade - 2nd Grade - 3rd...
*Thursday, March 8, 2012 at 6:03am*

**statistics**

Question Details The following data was collected to determine whether or not Monroe County College students work 18 hours per week: 20,22,25,12,30,49,10,30,17,15,0,24,20,22,23,20,25,24,30,12,15,29,0,25,2,40,30,0,33,0,45,30,38,48,0,40,20,0,0,24. a) Describe the ...
*Thursday, March 8, 2012 at 3:47am*

**Calculus**

Glenview Community College wants to build a rectangular parking lot on land bordered on one side by a highway. It has 380 feet of fencing to use on the other three sides. What should be the dimensions of the lot if the enclosed area is to be a maximum?
*Thursday, March 8, 2012 at 3:33am*

**college algebra**

3 = 4 ------------- x-8 x=2 how do you solve this
*Wednesday, March 7, 2012 at 6:58am*

**College Algebra**

Let U = {5, 6, 7, 8, 9, 10, 11, 12, 13, 14}, A = {6, 8, 10, 12}, B = {9, 13}, and C = {6, 9, 12, 13, 14}. List all the members of each of the sets. (a) (A ¿ B) ¿ C , (b) A ¿ B ¾ C
*Tuesday, March 6, 2012 at 10:53am*

**College Physics Help**

A thin rod (length = 1.10 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. The mass of the rod may be ignored, compared to the mass of the object fixed to the top of the rod. The rod, starting from rest, tips over and ...
*Monday, March 5, 2012 at 7:04pm*

**College Physics**

Some bacteria are propelled by motors that spin hair-like flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.1x10-8m, and a tangential speed at the rim of 2.0x10-5 m/s. (a) What is the angular speed (the magnitude of the angular ...
*Monday, March 5, 2012 at 6:55pm*

**Algebra**

Consider the following apportionment problem for College Town. Suppose each council member is to represent approximately 2,500 citizens. Use the apportionment plan requested in the problem, assuming there must be 10 representatives. North: 5,500 South: 9,000 East: 6,400 West: ...
*Monday, March 5, 2012 at 5:48pm*

**algebra**

grandma ploan to finance her grandchilds college education she has 50,000 to invest use a long range investment pln ,cd,saving bond etc. the plan is to earn compound interest.the principal is(p)50,000 interest rate is (r)3.60years for investment is(6)this is time state number ...
*Monday, March 5, 2012 at 3:29pm*

**College Physics**

A 26.5 kg block (m1) is on a horizontal surface, connected to a 6.90 kg block (m2) by a massless string. The frictionless pulley has a radius R = 0.096 m and a moment of inertia I=0.080 kgm2 m2 is hanging straight down from the pulley over the edge of the surface. A force F = ...
*Monday, March 5, 2012 at 12:19am*

**com/156**

Part 2: Paraphrasing and Quoting Review the following passage and paraphrase the long passage in the following box. Use the reference to create an appropriate APA-formatted, in-text citation. Additionally, include one direct quotation. One of the most valuable skills a student...
*Sunday, March 4, 2012 at 8:21pm*

**Probability**

Thank you for the explanation MathMate! Would the answer to this question be A? Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her ...
*Sunday, March 4, 2012 at 6:56pm*

**college algebra **

solve the logarithmic equation. Please show all work. log5x+log5(x-3)=log5(x+5)
*Sunday, March 4, 2012 at 4:33pm*

**college algebra**

use properties of logarithms to find the exact value of the expression. sqrtlog81 3
*Sunday, March 4, 2012 at 4:31pm*

**college algebra**

solve the equation below. Please show all work. log3(x/2-9)=4
*Sunday, March 4, 2012 at 4:29pm*

**Highline Community College**

Suppose that the marginal revenue for a product is given by the following, where x is the number of units and revenue is in dollars. MR = −28 (2x + 2)2 + 28 Find the total revenue.
*Sunday, March 4, 2012 at 4:23pm*

**Probability**

Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her answers are correct? A. 0.23 B. 0.34 C. 0.66 D. 0.78 Explanation please??
*Sunday, March 4, 2012 at 2:28pm*

**Probability**

Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her answers are correct? A. 0.23 B. 0.34 C. 0.66 D. 0.78
*Sunday, March 4, 2012 at 2:02pm*

**Math**

Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her answers are correct? A. 0.23 B. 0.34 C. 0.66 D. 0.78
*Sunday, March 4, 2012 at 1:42pm*

**writing paper**

I need to add a cover page to my writing assinment. I can not find any information on what I include in the cover page. This is for Penn Foster College.
*Sunday, March 4, 2012 at 9:38am*

**Math**

Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her answers are correct? A. 0.23 B. 0.34 C. 0.66 D. 0.78 Is it B?
*Saturday, March 3, 2012 at 10:28pm*

**College Chem 2 **

which of the following has the highest buffer capacity? A 0.10M H2PO4-/0.10M HPO4 -2 B 0.50 M H2PO4-/0.10 M HPO 2- C 0.10 M H2PO4-/0.50 M HPO4 2- D 0.50 M H2PO4-/0.50M HPO4 2- E They all hae the same buffer capacity. There is a group of us working together.
*Saturday, March 3, 2012 at 5:31pm*

**statistics**

You and three (3) of your friends were in the same advance placement high school chemistry class in high school. All four (4) of you decided to take the same chemistry class together at the local university along with 21 other students. On the first day of class, the professor...
*Saturday, March 3, 2012 at 3:29pm*

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